Query current AC adapter
The wire of my adapter became tired between the adapter and the computer - I ordered a new one, but instead of 15V and 8A (for a Satellite A40) its 15V and 10A - the provider says its Ok but I won't burn my baby's brains! Can someone reassure me?
Thank you
Donald
Hello
Your Satellite must certainly 15V 8A 120W adapter PA3237U-1ACA part number.
Try to order the original part.
Tags: Toshiba
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Solved the problem. I swapped the video card in my m17x r4 (7970 m) friends
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Thank you.
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SDO_RELATE within PL/SQL query with rownum clause runs slowly on 12 c - works great on 10 g
Hello
I use the database 12.1.0.2 with a node 2 RAC on Windows.
I am struck by a really weird performance problem with a particular query. Bear with me while I try to explain...
I have a chart with lines 30 sdo_geometry million, in 7 partitions with a local partitioned spatial index divided. Called BIG_PARTITIONED_TABLE for this example.
I query the table to search for one line with a geometry that is equal to the geometry of my request. In this case I use sdo_relate with "mask = equal". Instantly returns:
SQL> select id, geometry 2 from BIG_PARTITIONED_TABLE o 3 where sdo_relate(o.geometry, sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), 4 SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272)), 'mask=equal') = 'TRUE' 5 and rownum = 1; ID ---------- GEOMETRY(SDO_GTYPE, SDO_SRID, SDO_POINT(X, Y, Z), SDO_ELEM_INFO, SDO_ORDINATES) ------------------------------------------------------------------------------- 2.5405E+12 SDO_GEOMETRY(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272)) Elapsed: 00:00:00.10
But if I put the same query in PL/SQL, so it takes 21 seconds:
SQL> declare 2 l_id number; 3 l_geom sdo_geometry; 4 l_window_geom sdo_geometry; 5 begin 6 l_window_geom := sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), 7 SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272)); 8 9 select id, geometry 10 into l_id, l_geom 11 from BIG_PARTITIONED_TABLE o 12 where sdo_relate(o.geometry, l_window_geom, 'mask=equal') = 'TRUE' 13 and rownum = 1; 14 15 end; 16 / PL/SQL procedure successfully completed. Elapsed: 00:00:21.13
If I remove the "rownum = 1", then it returns instantly:
SQL> declare 2 l_id number; 3 l_geom sdo_geometry; 4 l_window_geom sdo_geometry; 5 begin 6 l_window_geom := sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), 7 SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272)); 8 9 select id, geometry 10 into l_id, l_geom 11 from BIG_PARTITIONED_TABLE o 12 where sdo_relate(o.geometry, l_window_geom, 'mask=equal') = 'TRUE'; 13 14 end; 15 / PL/SQL procedure successfully completed. Elapsed: 00:00:00.03
If using sdo_equal instead of sdo_relate and keep the "rownum = 1", then it returns instantly.
SQL> declare 2 l_id number; 3 l_geom sdo_geometry; 4 l_window_geom sdo_geometry; 5 begin 6 l_window_geom := sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), 7 SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272)); 8 9 select id, geometry 10 into l_id, l_geom 11 from BIG_PARTITIONED_TABLE o 12 where sdo_equal(o.geometry, l_window_geom) = 'TRUE' 13 and rownum = 1; 14 15 end; 16 / PL/SQL procedure successfully completed. Elapsed: 00:00:00.13
Here is a comparison of the plans to explain. First, here's the good thing, that is using the spatial index (BIG_PARTITIONED_TABLE_SPIND):
select id, GEOMETRY FROM BIG_PARTITIONED_TABLE O WHERE SDO_EQUAL(O.GEOMETRY, :B1 ) = 'TRUE' AND ROWNUM = 1 call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.00 0.00 0 0 0 0 Execute 1 0.01 0.02 0 39 0 0 Fetch 1 0.00 0.01 0 31 0 1 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 3 0.01 0.04 0 70 0 1 Misses in library cache during parse: 0 Optimizer mode: ALL_ROWS Parsing user id: 263 (recursive depth: 1) Number of plan statistics captured: 1 Rows (1st) Rows (avg) Rows (max) Row Source Operation ---------- ---------- ---------- --------------------------------------------------- 1 1 1 COUNT STOPKEY (cr=99 pr=0 pw=0 time=43307 us) 1 1 1 PARTITION RANGE ALL PARTITION: 1 7 (cr=99 pr=0 pw=0 time=43297 us cost=0 size=66 card=1) 1 1 1 TABLE ACCESS BY LOCAL INDEX ROWID BIG_PARTITIONED_TABLE PARTITION: 1 7 (cr=99 pr=0 pw=0 time=43280 us cost=0 size=66 card=1) 1 1 1 DOMAIN INDEX BIG_PARTITIONED_TABLE_SPIND (cr=98 pr=0 pw=0 time=43250 us)
Then the slow that does not use the spatial index.
select id, GEOMETRY FROM BIG_PARTITIONED_TABLE O WHERE SDO_RELATE(O.GEOMETRY, :B1 , 'mask=equal') = 'TRUE' AND ROWNUM = 1 call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.01 0.00 0 0 0 0 Execute 1 0.03 0.03 0 1123 0 0 Fetch 1 24.25 24.25 0 499429 0 1 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 3 24.30 24.29 0 500552 0 1 Misses in library cache during parse: 1 Misses in library cache during execute: 1 Optimizer mode: ALL_ROWS Parsing user id: 263 (recursive depth: 1) Number of plan statistics captured: 1 Rows (1st) Rows (avg) Rows (max) Row Source Operation ---------- ---------- ---------- --------------------------------------------------- 1 1 1 COUNT STOPKEY (cr=499532 pr=0 pw=0 time=24289612 us) 1 1 1 HASH JOIN RIGHT SEMI (cr=499532 pr=0 pw=0 time=24289586 us cost=32 size=144 card=1) 1 1 1 VIEW VW_NSO_1 (cr=103 pr=0 pw=0 time=31110 us cost=29 size=98016 card=8168) 1 1 1 COLLECTION ITERATOR PICKLER FETCH SDO_PQRY (cr=103 pr=0 pw=0 time=31104 us cost=29 size=16336 card=8168) 16914892 16914892 16914892 PARTITION RANGE ALL PARTITION: 1 7 (cr=499429 pr=0 pw=0 time=28678375 us cost=3 size=6600 card=100) 16914892 16914892 16914892 TABLE ACCESS FULL BIG_PARTITIONED_TABLE PARTITION: 1 7 (cr=499429 pr=0 pw=0 time=23406547 us cost=3 size=6600 card=100)
I tried adding an indication / * + index (o BIG_PARTITIONED_TABLE_SPIND) * / but that did not help.
I am struck this issue during testing of upgrade 10.2.0.5 to 12.1.0.2. The query works perfectly on 10g - we note only that this question on 12 c.
I can't use sdo_equal as the real mask that we want is equal + dommagescausdspar + covers. I'm just using equal here to simplify the test.
I use "rownum = 1" because I want to just the first result. In practice I can rewrite probably is a FOR LOOP, I get out after the first result, but that seems all just awful.
Any ideas? If anyone has seen anything like this before? Its an optimizer delivers really so I'm going to cross post the SQL Forum after a certain time, but thought I would post it here first.
Thank you
John
Hi John,.
Can you please try the following before your slow queries event?
"ALTER session set events ' trace 54669 name context forever."
Thank you
Ying
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Help setting up a SQL query with poor performance
Hi all
Database version: 10.2.0.5
I'm working on a new report to view the top users by the number of calls. The table is truncated and filled again every month with records for the previous month; It contains approximately 400 000 records.
I created a view with the columns needed for the report; also, the two functions of view calls to determine if a phone number is assigned to multiple staffs or several departments.
It's full again table every month:
CREATE TABLE "VOIP"."MONTHLY_BILLING_DETAILS" ( "ID" NUMBER NOT NULL ENABLE, "CDRRECORDTYPE" NUMBER, "G_CALLMANAGERID" NUMBER, "G_CALLID" NUMBER, "O_LEGCALLIDENTIFIER" NUMBER, "DATETIMEORIGINATION" NUMBER, "O_NODEID" NUMBER, "O_SPAN" NUMBER, "O_IPADDR" NUMBER, "CALLINGPARTYNUMBER" VARCHAR2(50 BYTE) NOT NULL ENABLE, "CALLINGPARTY_USERID" VARCHAR2(128 BYTE), "O_CAUSE_LOCATION" NUMBER, "O_CAUSE_VALUE" NUMBER, "O_PRECEDENCELEVEL" NUMBER, "O_MEDIATRANSPORTADDR_IP" NUMBER, "O_MEDIATRANSPORTADDR_PORT" NUMBER, "O_MCAP_PAYLOADCAPABILITY" NUMBER, "O_MCAP_MAXFRAMESPERPACKET" NUMBER, "O_MCAP_G723BITRATE" NUMBER, "O_VCAP_CODEC" NUMBER, "O_VCAP_BANDWIDTH" NUMBER, "O_VCAP_RESOLUTION" NUMBER, "O_VIDEOTRANSPORTADDR_IP" NUMBER, "O_VIDEOTRANSPORTADDR_PORT" NUMBER, "O_RSVPAUDIOSTAT" VARCHAR2(64 BYTE), "O_RSVPVIDEOSTAT" VARCHAR2(64 BYTE), "DESTLEGIDENTIFIER" NUMBER, "DESTNODEID" NUMBER, "DESTSPAN" NUMBER, "DESTIPADDR" NUMBER, "ORIGINALCALLEDPARTYNUMBER" VARCHAR2(50 BYTE), "FINALC_PARTYNUMBER" VARCHAR2(50 BYTE), "FINALC_PARTY_USERID" VARCHAR2(128 BYTE), "DESTCAUSE_LOCATION" NUMBER, "DESTCAUSE_VALUE" NUMBER, "DESTPRECEDENCELEVEL" NUMBER, "DESTMEDIATRANSPORTADDR_IP" NUMBER, "DESTMEDIATRANSPORTADDR_PORT" NUMBER, "DESTMCAP_PAYLOADCAPABILITY" NUMBER, "DESTMCAP_MAXFRAMESPERPACKET" NUMBER, "DESTMCAP_G723BITRATE" NUMBER, "DV_CAP_CODEC" NUMBER, "DV_CAP_BANDWIDTH" NUMBER, "DV_CAP_RESOLUTION" NUMBER, "DV_TRANSPORTADDR_IP" NUMBER, "DV_TRANSPORTADDR_PORT" NUMBER, "DESTRSVPAUDIOSTAT" VARCHAR2(64 BYTE), "DESTRSVPVIDEOSTAT" VARCHAR2(64 BYTE), "DATETIMECONNECT" NUMBER, "DATETIMEDISCONNECT" NUMBER, "LASTREDIRECTDN" VARCHAR2(50 BYTE), "PKID" VARCHAR2(4000 BYTE), "O_INALCALLEDPARTYNUM_PARTITION" VARCHAR2(50 BYTE), "CALLINGPARTYNUM_PARTITION" VARCHAR2(50 BYTE), "FINALC_PARTYNUM_PARTITION" VARCHAR2(50 BYTE), "LASTREDIRECTDNPARTITION" VARCHAR2(50 BYTE), "DURATION" NUMBER, "O_DEVICENAME" VARCHAR2(129 BYTE), "DESTDEVICENAME" VARCHAR2(129 BYTE), "O_CALLTERMINATION_BEHALF" NUMBER, "DESTCALLTERMINATION_BEHALF" NUMBER, "O_CALLEDPARTYREDIRECT_BEHALF" NUMBER, "LASTREDIRECTREDIRECT_BEHALF" NUMBER, "O_CALLEDPARTYREDIRECTREASON" NUMBER, "LASTREDIRECTREDIRECTREASON" NUMBER, "DESTCONVERSATIONID" NUMBER, "G_CALLID_CLUSTERID" VARCHAR2(50 BYTE), "JOIN_BEHALF" NUMBER, "COMMENTS" VARCHAR2(2048 BYTE), "AUTHCODEDESCRIPTION" VARCHAR2(50 BYTE), "AUTHORIZATIONLEVEL" NUMBER, "CLIENTMATTERCODE" VARCHAR2(32 BYTE), "O_DTMFMETHOD" NUMBER, "DESTDTMFMETHOD" NUMBER, "CALLSECUREDSTATUS" NUMBER, "O_CONVERSATIONID" NUMBER, "O_MCAP_BANDWIDTH" NUMBER, "DESTMCAP_BANDWIDTH" NUMBER, "AUTHORIZATIONCODEVALUE" VARCHAR2(32 BYTE), "OUTPULSEDCALLINGPARTYNUMBER" VARCHAR2(50 BYTE), "OUTPULSEDCALLEDPARTYNUMBER" VARCHAR2(50 BYTE), "O_IPV4V6ADDR" VARCHAR2(64 BYTE), "DESTIPV4V6ADDR" VARCHAR2(64 BYTE), "O_VCAP_CODEC_CHAN2" NUMBER, "O_VCAP_BANDWIDTH_CHAN2" NUMBER, "O_VCAP_RESOLUTION_CHAN2" NUMBER, "O_V_TRANSPORTADDR_IP_CHAN2" NUMBER, "O_V_TRANSPORTADDR_PORT_CHAN2" NUMBER, "O_V_OCHANNEL_ROLE_CHAN2" NUMBER, "DV_CAP_CODEC_CHAN2" NUMBER, "DV_CAP_BANDWIDTH_CHAN2" NUMBER, "DV_CAP_RESOLUTION_CHAN2" NUMBER, "DV_TRANSPORTADDR_IP_CHAN2" NUMBER, "DV_TRANSPORTADDR_PORT_CHAN2" NUMBER, "DV_CHANNEL_ROLE_CHAN2" NUMBER, "DATE_CREATED" DATE, "DATETIME_CONNECT" DATE, "DATETIME_DISCONNECT" DATE, "USERID_EMAIL_ADDRESS" VARCHAR2(100 BYTE), "FROM_FULL_TELEPHONE" VARCHAR2(20 BYTE), "TO_FULL_TELEPHONE" VARCHAR2(20 BYTE), "FROM_EXCHANGE" VARCHAR2(7 BYTE), "TO_EXCHANGE" VARCHAR2(20 BYTE), "FROM_CITY" VARCHAR2(200 BYTE), "FROM_STATE" VARCHAR2(2 BYTE), "TO_CITY" VARCHAR2(200 BYTE), "TO_STATE" VARCHAR2(2 BYTE), "CALL_TYPE" VARCHAR2(10 BYTE), CONSTRAINT "MONTHLY_BILLING_PK" PRIMARY KEY ("ID") USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 3145728 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ENABLE ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE(INITIAL 75497472 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ; CREATE INDEX "VOIP"."MONTHLY_BILL_INDEX1" ON "VOIP"."MONTHLY_BILLING_DETAILS" (TRUNC("DATETIME_CONNECT")) PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 4194304 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ; CREATE INDEX "VOIP"."MONTHLY_BILL_INDEX10" ON "VOIP"."MONTHLY_BILLING_DETAILS" ("CALL_TYPE") PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 4194304 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ; CREATE INDEX "VOIP"."MONTHLY_BILL_INDEX2" ON "VOIP"."MONTHLY_BILLING_DETAILS" ("FROM_EXCHANGE") PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 3145728 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ; CREATE INDEX "VOIP"."MONTHLY_BILL_INDEX3" ON "VOIP"."MONTHLY_BILLING_DETAILS" ("FROM_FULL_TELEPHONE", TRUNC("DATETIME_CONNECT")) PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ; CREATE INDEX "VOIP"."MONTHLY_BILL_INDEX4" ON "VOIP"."MONTHLY_BILLING_DETAILS" ("DATETIME_CONNECT", NVL("FROM_FULL_TELEPHONE","CALLINGPARTYNUMBER")) PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 5242880 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ; CREATE INDEX "VOIP"."MONTHLY_BILL_INDEX5" ON "VOIP"."MONTHLY_BILLING_DETAILS" ("DATETIME_CONNECT", NVL("TO_FULL_TELEPHONE","ORIGINALCALLEDPARTYNUMBER")) PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 5242880 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ; CREATE INDEX "VOIP"."MONTHLY_BILL_INDEX6" ON "VOIP"."MONTHLY_BILLING_DETAILS" (TO_CHAR("DATETIME_CONNECT",'fmMONTH YYYY')) PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 4194304 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ; CREATE INDEX "VOIP"."MONTHLY_BILL_INDEX7" ON "VOIP"."MONTHLY_BILLING_DETAILS" ("TO_EXCHANGE") PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 3145728 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ; CREATE INDEX "VOIP"."MONTHLY_BILL_INDEX8" ON "VOIP"."MONTHLY_BILLING_DETAILS" (NVL("FROM_FULL_TELEPHONE","CALLINGPARTYNUMBER")) PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 4194304 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ; CREATE INDEX "VOIP"."MONTHLY_BILL_INDEX9" ON "VOIP"."MONTHLY_BILLING_DETAILS" ("DATETIME_CONNECT") PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 3145728 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "VOIPDATA" ;These are the functions to determine if a phone number is assigned to multiple staffs or departments:
FUNCTION GET_EMPLOYEE_NAME (P_FROM_FULL_TELEPHONE IN VARCHAR2) RETURN VARCHAR2 AS L_NAME EMPLOYEES.NAME%TYPE; BEGIN SELECT NAME INTO L_NAME FROM EMPLOYEES WHERE WORK_PHONE_1_FORMAT = P_FROM_FULL_TELEPHONE; RETURN L_NAME; EXCEPTION WHEN TOO_MANY_ROWS THEN L_NAME := 'Multiple Employees'; RETURN L_NAME; WHEN NO_DATA_FOUND THEN L_NAME := 'No Employee Assigned'; RETURN L_NAME; WHEN OTHERS THEN NULL; END;
FUNCTION GET_DEPARTMENT_NAME (P_FROM_FULL_TELEPHONE IN VARCHAR2) RETURN VARCHAR2 AS L_DEPT_DESCR EMPLOYEES.DEPT_DESCR%TYPE; BEGIN SELECT DEPT_DESCR INTO L_DEPT_DESCR FROM EMPLOYEES WHERE WORK_PHONE_1_FORMAT = P_FROM_FULL_TELEPHONE; RETURN L_DEPT_DESCR; EXCEPTION WHEN TOO_MANY_ROWS THEN L_DEPT_DESCR := 'Multiple Departments'; RETURN L_DEPT_DESCR; WHEN NO_DATA_FOUND THEN L_DEPT_DESCR := 'No Department Assigned'; RETURN L_DEPT_DESCR; WHEN OTHERS THEN NULL; END;
This is the point of view that I'll use in the report:
CREATE OR REPLACE FORCE VIEW "VOIP"."TOP_USERS_BY_CALLS_V" ("TOP_NO", "EMPLOYEE_NAME", "EMPLOYEE_DEPARTMENT", "PHONE_NUMBER", "QUANTITY_CALLS") AS SELECT ROWNUM, VOIP_PKG.GET_EMPLOYEE_NAME(FROM_FULL_TELEPHONE), VOIP_PKG.GET_DEPARTMENT_NAME(FROM_FULL_TELEPHONE), FROM_FULL_TELEPHONE, QUANTITY_CALLS FROM ( SELECT MBD.FROM_FULL_TELEPHONE, COUNT(1) QUANTITY_CALLS FROM MONTHLY_BILLING_DETAILS MBD WHERE MBD.FROM_FULL_TELEPHONE IS NOT NULL AND MBD.FROM_FULL_TELEPHONE <> '000-000-0000' AND LENGTH(MBD.FROM_FULL_TELEPHONE) = 12 AND LENGTH(MBD.TO_FULL_TELEPHONE) = 12 AND SUBSTR(MBD.TO_FULL_TELEPHONE,1,3) NOT IN (SELECT AREA_CODE FROM NYNJ_METRO_AREA_CODES) AND SUBSTR(MBD.TO_FULL_TELEPHONE,1,3) NOT IN ('800','822','833','844', '855','866','877','888') GROUP BY MBD.FROM_FULL_TELEPHONE ORDER BY QUANTITY_CALLS DESC ) WHERE ROWNUM <= 100;Explain Plan output and Extended SQL Trace:
SQL> SQL> show parameter user_dump_dest NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ user_dump_dest string D:\ORACLEHOMES\ADMIN\RTS9\UDUM P SQL> SQL> show parameter optimizer NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ optimizer_dynamic_sampling integer 2 optimizer_features_enable string 10.2.0.5 optimizer_index_caching integer 0 optimizer_index_cost_adj integer 100 optimizer_mode string ALL_ROWS optimizer_secure_view_merging boolean TRUE SQL> SQL> show parameter db_file_multi NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ db_file_multiblock_read_count integer 16 SQL> SQL> show parameter db_block_size NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ db_block_size integer 8192 SQL> SQL> show parameter cursor_sharing NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ cursor_sharing string EXACT SQL> SQL> column sname format a20 SQL> column pname format a20 SQL> column pval2 format a20 SQL> SQL> select 2 sname 3 , pname 4 , pval1 5 , pval2 6 from 7 sys.aux_stats$; SNAME PNAME PVAL1 PVAL2 -------------------- -------------------- ---------- -------------------- SYSSTATS_INFO STATUS COMPLETED SYSSTATS_INFO DSTART 02-09-2009 15:46 SYSSTATS_INFO DSTOP 02-09-2009 15:46 SYSSTATS_INFO FLAGS 1 SYSSTATS_MAIN CPUSPEEDNW 1259.6206 SYSSTATS_MAIN IOSEEKTIM 10 SYSSTATS_MAIN IOTFRSPEED 4096 SYSSTATS_MAIN SREADTIM SYSSTATS_MAIN MREADTIM SYSSTATS_MAIN CPUSPEED SYSSTATS_MAIN MBRC SYSSTATS_MAIN MAXTHR SYSSTATS_MAIN SLAVETHR 13 rows selected. Elapsed: 00:00:00.03 SQL> SQL> explain plan for 2 SELECT 3 TOP_NO, 4 EMPLOYEE_NAME, 5 EMPLOYEE_DEPARTMENT, 6 PHONE_NUMBER, 7 QUANTITY_CALLS 8 FROM 9 TOP_USERS_BY_CALLS_V 10 ORDER BY 11 QUANTITY_CALLS DESC; Explained. Elapsed: 00:00:00.18 SQL> SQL> select * from table(dbms_xplan.display); PLAN_TABLE_OUTPUT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Plan hash value: 826236322 ---------------------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ---------------------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | 4042 | 1313 (1)| 00:00:16 | | 1 | SORT ORDER BY | | 1 | 4042 | 1313 (1)| 00:00:16 | | 2 | VIEW | TOP_USERS_BY_CALLS_V | 1 | 4042 | 1312 (1)| 00:00:16 | |* 3 | COUNT STOPKEY | | | | | | | 4 | VIEW | | 1 | 25 | 1312 (1)| 00:00:16 | |* 5 | SORT ORDER BY STOPKEY | | 1 | 26 | 1312 (1)| 00:00:16 | | 6 | HASH GROUP BY | | 1 | 26 | 1312 (1)| 00:00:16 | |* 7 | FILTER | | | | | | |* 8 | TABLE ACCESS BY INDEX ROWID| MONTHLY_BILLING_DETAILS | 1 | 26 | 1310 (1)| 00:00:16 | |* 9 | INDEX FULL SCAN | MONTHLY_BILL_INDEX3 | 934 | | 449 (1)| 00:00:06 | |* 10 | INDEX FULL SCAN | NYNJ_METRO_AREA_CODES_UK1 | 1 | 4 | 1 (0)| 00:00:01 | ---------------------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 3 - filter(ROWNUM<=100) 5 - filter(ROWNUM<=100) 7 - filter( NOT EXISTS (SELECT 0 FROM VOIP."NYNJ_METRO_AREA_CODES" "NYNJ_METRO_AREA_CODES" WHERE LNNVL("AREA_CODE"<>SUBSTR(:B1,1,3)))) 8 - filter(LENGTH("MBD"."TO_FULL_TELEPHONE")=12 AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'800' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'822' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'833' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'844' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'855' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'866' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'877' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'888') 9 - filter(LENGTH("MBD"."FROM_FULL_TELEPHONE")=12 AND "MBD"."FROM_FULL_TELEPHONE"<>'000-000-0000' AND "MBD"."FROM_FULL_TELEPHONE" IS NOT NULL) 10 - filter(LNNVL("AREA_CODE"<>SUBSTR(:B1,1,3))) 33 rows selected. Elapsed: 00:00:00.82 SQL> SQL> rollback; Rollback complete. Elapsed: 00:00:00.00 SQL> SQL> set autotrace traceonly arraysize 100 SQL> SQL> alter session set tracefile_identifier = 'mytrace1'; Session altered. Elapsed: 00:00:00.01 SQL> SQL> alter session set events '10046 trace name context forever, level 8'; Session altered. Elapsed: 00:00:00.15 SQL> SQL> SELECT 2 TOP_NO, 3 EMPLOYEE_NAME, 4 EMPLOYEE_DEPARTMENT, 5 PHONE_NUMBER, 6 QUANTITY_CALLS 7 FROM 8 TOP_USERS_BY_CALLS_V 9 ORDER BY 10 QUANTITY_CALLS DESC; 100 rows selected. Elapsed: 00:10:37.68 Execution Plan ---------------------------------------------------------- Plan hash value: 826236322 ---------------------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ---------------------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | 4042 | 1313 (1)| 00:00:16 | | 1 | SORT ORDER BY | | 1 | 4042 | 1313 (1)| 00:00:16 | | 2 | VIEW | TOP_USERS_BY_CALLS_V | 1 | 4042 | 1312 (1)| 00:00:16 | |* 3 | COUNT STOPKEY | | | | | | | 4 | VIEW | | 1 | 25 | 1312 (1)| 00:00:16 | |* 5 | SORT ORDER BY STOPKEY | | 1 | 26 | 1312 (1)| 00:00:16 | | 6 | HASH GROUP BY | | 1 | 26 | 1312 (1)| 00:00:16 | |* 7 | FILTER | | | | | | |* 8 | TABLE ACCESS BY INDEX ROWID| MONTHLY_BILLING_DETAILS | 1 | 26 | 1310 (1)| 00:00:16 | |* 9 | INDEX FULL SCAN | MONTHLY_BILL_INDEX3 | 934 | | 449 (1)| 00:00:06 | |* 10 | INDEX FULL SCAN | NYNJ_METRO_AREA_CODES_UK1 | 1 | 4 | 1 (0)| 00:00:01 | ---------------------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 3 - filter(ROWNUM<=100) 5 - filter(ROWNUM<=100) 7 - filter( NOT EXISTS (SELECT 0 FROM VOIP."NYNJ_METRO_AREA_CODES" "NYNJ_METRO_AREA_CODES" WHERE LNNVL("AREA_CODE"<>SUBSTR(:B1,1,3)))) 8 - filter(LENGTH("MBD"."TO_FULL_TELEPHONE")=12 AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'800' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'822' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'833' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'844' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'855' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'866' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'877' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'888') 9 - filter(LENGTH("MBD"."FROM_FULL_TELEPHONE")=12 AND "MBD"."FROM_FULL_TELEPHONE"<>'000-000-0000' AND "MBD"."FROM_FULL_TELEPHONE" IS NOT NULL) 10 - filter(LNNVL("AREA_CODE"<>SUBSTR(:B1,1,3))) Statistics ---------------------------------------------------------- 365 recursive calls 0 db block gets 689543 consistent gets 212906 physical reads 0 redo size 5984 bytes sent via SQL*Net to client 400 bytes received via SQL*Net from client 2 SQL*Net roundtrips to/from client 2 sorts (memory) 0 sorts (disk) 100 rows processed SQL> SQL> disconnectPart of the automatic trace output:
SELECT TOP_NO, EMPLOYEE_NAME, EMPLOYEE_DEPARTMENT, PHONE_NUMBER, QUANTITY_CALLS FROM TOP_USERS_BY_CALLS_V ORDER BY QUANTITY_CALLS DESC call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.00 0.43 0 0 0 0 Execute 1 0.00 0.00 0 0 0 0 Fetch 2 24.70 635.81 212587 631823 0 100 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 4 24.70 636.25 212587 631823 0 100 Misses in library cache during parse: 1 Optimizer mode: ALL_ROWS Parsing user id: 148 Rows Row Source Operation ------- --------------------------------------------------- 100 SORT ORDER BY (cr=689531 pr=212900 pw=0 time=636823070 us) 100 VIEW TOP_USERS_BY_CALLS_V (cr=689531 pr=212900 pw=0 time=642681672 us) 100 COUNT STOPKEY (cr=631823 pr=212587 pw=0 time=635667026 us) 100 VIEW (cr=631823 pr=212587 pw=0 time=635666810 us) 100 SORT ORDER BY STOPKEY (cr=631823 pr=212587 pw=0 time=635666493 us) 2512 HASH GROUP BY (cr=631823 pr=212587 pw=0 time=635666125 us) 27112 FILTER (cr=631823 pr=212587 pw=0 time=519230237 us) 315563 TABLE ACCESS BY INDEX ROWID MONTHLY_BILLING_DETAILS (cr=381523 pr=212587 pw=0 time=580209555 us) 394473 INDEX FULL SCAN MONTHLY_BILL_INDEX3 (cr=2679 pr=2679 pw=0 time=26793918 us)(object id 206675) 226627 INDEX FULL SCAN NYNJ_METRO_AREA_CODES_UK1 (cr=250300 pr=0 pw=0 time=3575488 us)(object id 206605) Elapsed times include waiting on following events: Event waited on Times Max. Wait Total Waited ---------------------------------------- Waited ---------- ------------ SQL*Net message to client 2 0.00 0.00 db file sequential read 212587 0.20 611.67 SQL*Net message from client 2 0.00 0.00 SQL*Net more data to client 2 0.00 0.00 ********************************************************************************
DBMS_XPLAN. Output DISPLAY_CURSOR:
SQL> SQL> select * from table(dbms_xplan.display_cursor(null, null, 'ALLSTATS LAST')); PLAN_TABLE_OUTPUT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SQL_ID 1ut636vt58jdw, child number 0 ------------------------------------- SELECT /*+ gather_plan_statistics */ TOP_NO, EMPLOYEE_NAME, EMPLOYEE_DEPARTMENT, PHONE_NUMBER, QUANTITY_CALLS FROM TOP_USERS_BY_CALLS_V ORDER BY QUANTITY_CALLS DESC Plan hash value: 826236322 -------------------------------------------------------------------------------------------------------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | Reads | OMem | 1Mem | Used-Mem | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | 100 |00:09:56.06 | 689K| 210K| | | | | 1 | SORT ORDER BY | | 1 | 1 | 100 |00:09:56.06 | 689K| 210K| 13312 | 13312 |12288 (0)| | 2 | VIEW | TOP_USERS_BY_CALLS_V | 1 | 1 | 100 |00:10:04.98 | 689K| 210K| | | | |* 3 | COUNT STOPKEY | | 1 | | 100 |00:09:54.89 | 631K| 210K| | | | | 4 | VIEW | | 1 | 1 | 100 |00:09:54.89 | 631K| 210K| | | | |* 5 | SORT ORDER BY STOPKEY | | 1 | 1 | 100 |00:09:54.88 | 631K| 210K| 6144 | 6144 | 6144 (0)| | 6 | HASH GROUP BY | | 1 | 1 | 2512 |00:09:54.88 | 631K| 210K| 821K| 821K| 1153K (0)| |* 7 | FILTER | | 1 | | 27112 |00:08:58.57 | 631K| 210K| | | | |* 8 | TABLE ACCESS BY INDEX ROWID| MONTHLY_BILLING_DETAILS | 1 | 1 | 315K|00:08:57.07 | 381K| 210K| | | | |* 9 | INDEX FULL SCAN | MONTHLY_BILL_INDEX3 | 1 | 934 | 394K|00:00:23.02 | 2679 | 2679 | | | | |* 10 | INDEX FULL SCAN | NYNJ_METRO_AREA_CODES_UK1 | 250K| 1 | 226K|00:00:03.47 | 250K| 0 | | | | -------------------------------------------------------------------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 3 - filter(ROWNUM<=100) 5 - filter(ROWNUM<=100) 7 - filter( IS NULL) 8 - filter((LENGTH("MBD"."TO_FULL_TELEPHONE")=12 AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'800' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'822' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'833' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'844' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'855' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'866' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'877' AND SUBSTR("MBD"."TO_FULL_TELEPHONE",1,3)<>'888')) 9 - filter((LENGTH("MBD"."FROM_FULL_TELEPHONE")=12 AND "MBD"."FROM_FULL_TELEPHONE"<>'000-000-0000' AND "MBD"."FROM_FULL_TELEPHONE" IS NOT NULL)) 10 - filter(LNNVL("AREA_CODE"<>SUBSTR(:B1,1,3))) 35 rows selected. Elapsed: 00:00:00.50 SQL> SQL> spool offAny help will be greatly appreciated. Please let me know if you need additional information.
Thank you
Erick
ediazjorge wrote:
Please let me know if you need additional information or do additional tests.
Thanks again!
Erick
It's to you if you are satisfied or interested in improvements (if possible).
If so the first thing I would like if you had your refreshed perspective as advised. According to expected area_code table cardinalities I doubt.
So, if not cool off with dbms_stats.gather_table_stats on two tables, area_codes and MONTHLY_BILLING_DETAILS.
Bottlenecks are now obviously the full table of MONTHLY_BILLING_DETAILS as well as the ANTI of LOOPS IMBRIQUEES scan.
At the moment I don't think that an index of MONTHLY_BILLING_DETAILS will help a lot, because most of the lines will pass filter predicates, and because we need some columns in it, I have now I there will be gain a full index scan.
I was surprissed that the optimizer pushes the substr <> predicates to both tables.
So depending on your data, you might try
1 make a factory of subquery select the two MONTHLY_BILLING_DETAILS columns that all directly apply predicates of membership and use it directly in the join instead of the table.
or
2. If all subtr to so are part of the table area_code choose in it using a subquery (or inline view) plant excluding these values.
Both are attempts to get rid of the substr excluding as filters of join predicates.
In fact, I was expecting a hash join anti as shown in the plan to explain instead of the nested loops anti, I expect to be more effective in this case.
Perhaps with correct cardinalities the optimizier would understand himself.
Just to test it, you can try the use_hash hint in the join:
Select / * + USE_HASH (MBD, one) * /.
..
OF MONTHLY_BILLING_DETAILS MBD,.
NYNJ_METRO_AREA_CODES one
(It's a good habit anyway usually use aliases and precede the names of columns. In the, it is easier to read queries are only trivial).
-
Format the results of the SQL query, currently, show as below.
Select license_type, correspondents of license_info where license_type in ('TEM', 'TDM') order by license_type;
TDM 1445140800000000000
TDM 1420952400000000000
TDM 1444363200000000000
TDM 1445054400000000000
TDM 1428724800000000000
TEM 1421125200000000000
TEM 1423890000000000000
TEM 1449637200000000000
TEM 1444968000000000000
TEM 1428724800000000000I need formatting like below
Expected result:
TDM 1445140800000000000 TEM 1421125200000000000
TDM 1420952400000000000 TEM 1423890000000000000
TDM 1444363200000000000 TEM 1449637200000000000
TDM 1445054400000000000 TEM 1444968000000000000
TDM 1428724800000000000 TEM 1428724800000000000I have sample data only, Blue said the change in your main table request
Try:
Select max (f1),
Max (F2),
Max (F3),
Max (F4)
de)
Select decode (license_type, 'TDM' license_type) f1,
Decode (license_type, 'TDM', expiration_date) f2,
Decode (license_type, 'TEM' license_type) f3,
Decode (license_type, 'TEM', expiration_date) f4,
ROW_NUMBER() over (partition by order correspondents license_type) r
Of
)
R group
----
Ramin Hashimzade
-
The identical query, unusable performance in an environment - please help
We strive to improve 10.2.0.4 to 11.2.0.2, but one of our considered requests is completely wrong (30 seconds in our current environment, 4000 in our upgraded environment).
Note that the caveat is that it will be very difficult for me to edit the SQL code (his coming of another group of TI, as well as their position is that he should not have to be changed given the fact that it works so well in the current production environment).
The query is exactly the same in both environments and transports the SQL_ID, but explain the plans are different.
The environment in which the application works is version 10.2.0.4 and time the trace is 30,15 seconds, 841 rows returned.
The new environment is 11.2.0.2, the elapsed time is 4035 seconds, 841 rows returned.
The environments are comparable in terms of CPU/memory/IO (the two are written for on our NetApp NFS mounts)
SGA_MAX/TARGET and PGA_AGGREGATE_TARGET are the same in both environments, as well as HASH_AREA_SIZE and SORT_AREA_SIZE.
The table database is identical, and all of the indexes are the same in both environments. His stats were collected and this behavior has persisted through several reboots of the databases.
I ran traces on statements in both environments and the performance difference seems to be due to direct path read/write temp:
The SQL
New environment (11.2.0.2), takes 4000 seconds according to tkprofSELECT DISTINCT a.emplid, a.name, rds.sa_get_stdnt_email_fn (a.emplid), a.req_term, a.req_term_ldesc, CASE WHEN (a.req_acad_plan = 'PKINXXXBBS' AND a.cum_gpa >= d.gpa) THEN NVL (c.num_met, 0) + 1 WHEN (b.gpa >= d.gpa AND a.req_acad_plan <> 'PKINXXXBBS') THEN NVL (c.num_met, 0) + 1 ELSE NVL (c.num_met, 0) END AS "Requirement Status", a.cum_total_passed AS "Cumulative Units", a.admit_term, a.admit_term_ldesc, a.acad_plan, a.acad_plan_ldesc, a.academic_level, a.academic_level_ldesc, TO_CHAR (a.rpt_date, 'MM/DD/YYYY') AS rpt_date, TO_CHAR (NVL (b.gpa, 0), '0.000') AS gpa, TO_CHAR (NVL (a.cum_gpa, 0), '0.000') AS cum_gpa FROM sa.rec_sm_stdnt_deg_completion a, ( SELECT DISTINCT CASE WHEN SUM (b_sub.units_earned) = 0 THEN 0 ELSE SUM (b_sub.grade_points) / SUM (b_sub.units_earned) END AS gpa, b_sub.emplid, b_sub.acad_career, b_sub.acad_plan, b_sub.req_acad_plan, b_sub.req_term, b_sub.academic_level, b_sub.rqrmnt_group FROM sa.rec_sm_stdnt_deg_completion b_sub, hrsa_extr.ps_rq_grp_tbl g3, hrsa_extr.ps_rq_main_tbl m3 WHERE b_sub.req_acad_plan IS NOT NULL AND b_sub.acad_career = 'UGRD' AND b_sub.acad_prog = 'UBACH' AND b_sub.acad_plan = b_sub.req_acad_plan AND b_sub.grade <> 'IP' AND b_sub.impact_flag = 'Y' AND g3.effdt = (SELECT MAX (g3_ed.effdt) FROM hrsa_extr.ps_rq_grp_tbl g3_ed WHERE g3_ed.rqrmnt_group = g3.rqrmnt_group AND g3_ed.effdt <= b_sub.req_term_begin_date) AND g3.rqrmnt_group = b_sub.rqrmnt_group AND m3.effdt = (SELECT MAX (m3_ed.effdt) FROM hrsa_extr.ps_rq_main_tbl m3_ed WHERE m3_ed.requirement = m3.requirement AND m3_ed.effdt <= b_sub.req_term_begin_date) AND m3.requirement = b_sub.requirement GROUP BY b_sub.emplid, b_sub.acad_career, b_sub.acad_plan, b_sub.req_acad_plan, b_sub.req_term, b_sub.academic_level, b_sub.rqrmnt_group) b, ( SELECT c_sub.emplid, c_sub.acad_career, c_sub.acad_plan, c_sub.req_acad_plan, c_sub.req_term, c_sub.academic_level, c_sub.rqrmnt_group, COUNT (*) AS num_met FROM sa.rec_sm_stdnt_deg_completion c_sub, hrsa_extr.ps_rq_grp_tbl g2, hrsa_extr.ps_rq_main_tbl m2 WHERE c_sub.rqrmnt_line_status = 'COMP' AND c_sub.grade <> 'IP' AND c_sub.impact_flag = 'Y' AND c_sub.acad_career = 'UGRD' AND c_sub.acad_prog = 'UBACH' AND c_sub.acad_plan = c_sub.req_acad_plan AND g2.effdt = (SELECT MAX (g2_ed.effdt) FROM hrsa_extr.ps_rq_grp_tbl g2_ed WHERE g2_ed.rqrmnt_group = g2.rqrmnt_group AND g2_ed.effdt <= c_sub.req_term_begin_date) AND g2.rqrmnt_group = c_sub.rqrmnt_group AND m2.effdt = (SELECT MAX (m2_ed.effdt) FROM hrsa_extr.ps_rq_main_tbl m2_ed WHERE m2_ed.requirement = m2.requirement AND m2_ed.effdt <= c_sub.req_term_begin_date) AND m2.requirement = c_sub.requirement GROUP BY c_sub.emplid, c_sub.acad_career, c_sub.acad_plan, c_sub.req_acad_plan, c_sub.req_term, c_sub.academic_level, c_sub.rqrmnt_group) c, hrsa_extr.ps_smo_rdr_imp_pln d, hrsa_extr.ps_rq_grp_tbl g, hrsa_extr.ps_rq_main_tbl m WHERE a.acad_career = 'UGRD' AND a.acad_prog = 'UBACH' AND a.req_acad_plan IN (N'NUPPXXXBBS', N'NURPBASBBS', N'NURPXXXBBS') AND a.academic_level IN (N'10', N'20', N'30', N'40', N'50', N'GR') AND a.acad_plan = a.req_acad_plan AND a.impact_flag = 'Y' AND g.effdt = (SELECT MAX (g_ed.effdt) FROM hrsa_extr.ps_rq_grp_tbl g_ed WHERE g_ed.rqrmnt_group = g.rqrmnt_group AND g_ed.effdt <= a.req_term_begin_date) AND g.rqrmnt_group = a.rqrmnt_group AND m.effdt = (SELECT MAX (m_ed.effdt) FROM hrsa_extr.ps_rq_main_tbl m_ed WHERE m_ed.requirement = m.requirement AND m_ed.effdt <= a.req_term_begin_date) AND m.requirement = a.requirement AND a.emplid = b.emplid(+) AND a.acad_career = b.acad_career(+) AND a.acad_plan = b.acad_plan(+) AND a.req_acad_plan = b.req_acad_plan(+) AND a.academic_level = b.academic_level(+) AND a.req_term = b.req_term(+) AND a.rqrmnt_group = b.rqrmnt_group(+) AND a.emplid = c.emplid(+) AND a.acad_career = c.acad_career(+) AND a.acad_plan = c.acad_plan(+) AND a.req_acad_plan = c.req_acad_plan(+) AND a.academic_level = c.academic_level(+) AND a.req_term = c.req_term(+) AND a.rqrmnt_group = c.rqrmnt_group(+) AND d.acad_plan = a.req_acad_plan ORDER BY 6 DESC, 2 ASC;
Explain planPLAN_TABLE_OUTPUT ------------------------------------------------------------------------------------------------------------------------- Plan hash value: 4117596694 ------------------------------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | 314 | 15231 (1)| 00:03:03 | | 1 | SORT UNIQUE | | 1 | 314 | 15230 (1)| 00:03:03 | | 2 | NESTED LOOPS OUTER | | 1 | 314 | 15227 (1)| 00:03:03 | | 3 | NESTED LOOPS OUTER | | 1 | 285 | 15216 (1)| 00:03:03 | | 4 | NESTED LOOPS | | 1 | 256 | 15205 (1)| 00:03:03 | | 5 | NESTED LOOPS | | 1 | 241 | 15204 (1)| 00:03:03 | | 6 | NESTED LOOPS | | 1 | 223 | 15203 (1)| 00:03:03 | | 7 | NESTED LOOPS | | 17 | 731 | 15186 (1)| 00:03:03 | | 8 | VIEW | VW_SQ_3 | 998 | 27944 | 15186 (1)| 00:03:03 | | 9 | HASH GROUP BY | | 998 | 62874 | 15186 (1)| 00:03:03 | | 10 | MERGE JOIN | | 29060 | 1787K| 15184 (1)| 00:03:03 | | 11 | SORT JOIN | | 26 | 1248 | 15180 (1)| 00:03:03 | | 12 | TABLE ACCESS BY INDEX ROWID | REC_SM_STDNT_DEG_COMPLETION | 26 | 1248 | 15179 (1)| 00:03:03 | |* 13 | INDEX SKIP SCAN | REC0SM_STDNT_DEG_IDX | 26 | | 15168 (1)| 00:03:03 | |* 14 | SORT JOIN | | 1217 | 18255 | 4 (25)| 00:00:01 | | 15 | INDEX FAST FULL SCAN | PS3RQ_GRP_TBL | 1217 | 18255 | 3 (0)| 00:00:01 | |* 16 | INDEX UNIQUE SCAN | PS_RQ_GRP_TBL | 1 | 15 | 0 (0)| 00:00:01 | |* 17 | TABLE ACCESS BY USER ROWID | REC_SM_STDNT_DEG_COMPLETION | 1 | 180 | 1 (0)| 00:00:01 | |* 18 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 18 | 1 (0)| 00:00:01 | | 19 | SORT AGGREGATE | | 1 | 18 | | | | 20 | FIRST ROW | | 1 | 18 | 2 (0)| 00:00:01 | |* 21 | INDEX RANGE SCAN (MIN/MAX) | PS_RQ_MAIN_TBL | 1 | 18 | 2 (0)| 00:00:01 | |* 22 | INDEX FULL SCAN | PS0SMO_RDR_IMP_PLN | 1 | 15 | 1 (0)| 00:00:01 | |* 23 | VIEW PUSHED PREDICATE | | 1 | 29 | 11 (19)| 00:00:01 | | 24 | SORT GROUP BY | | 1 | 52 | 11 (19)| 00:00:01 | | 25 | VIEW | VM_NWVW_5 | 1 | 52 | 10 (10)| 00:00:01 | |* 26 | FILTER | | | | | | | 27 | SORT GROUP BY | | 1 | 165 | 10 (10)| 00:00:01 | |* 28 | FILTER | | | | | | | 29 | NESTED LOOPS | | 1 | 165 | 7 (0)| 00:00:01 | | 30 | NESTED LOOPS | | 1 | 147 | 6 (0)| 00:00:01 | | 31 | NESTED LOOPS | | 1 | 117 | 5 (0)| 00:00:01 | |* 32 | TABLE ACCESS BY INDEX ROWID | REC_SM_STDNT_DEG_COMPLETION | 1 | 90 | 4 (0)| 00:00:01 | |* 33 | INDEX RANGE SCAN | REC1SM_STDNT_DEG_IDX | 1 | | 3 (0)| 00:00:01 | |* 34 | INDEX RANGE SCAN | PS_RQ_GRP_TBL | 1 | 27 | 1 (0)| 00:00:01 | | 35 | SORT AGGREGATE | | 1 | 15 | | | | 36 | FIRST ROW | | 1 | 15 | 2 (0)| 00:00:01 | |* 37 | INDEX RANGE SCAN (MIN/MAX)| PS_RQ_GRP_TBL | 1 | 15 | 2 (0)| 00:00:01 | |* 38 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 30 | 1 (0)| 00:00:01 | |* 39 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 18 | 1 (0)| 00:00:01 | |* 40 | VIEW PUSHED PREDICATE | | 1 | 29 | 11 (19)| 00:00:01 | | 41 | SORT GROUP BY | | 1 | 32 | 11 (19)| 00:00:01 | | 42 | VIEW | VM_NWVW_4 | 1 | 32 | 10 (10)| 00:00:01 | |* 43 | FILTER | | | | | | | 44 | SORT GROUP BY | | 1 | 166 | 10 (10)| 00:00:01 | |* 45 | FILTER | | | | | | |* 46 | FILTER | | | | | | | 47 | NESTED LOOPS | | 1 | 166 | 7 (0)| 00:00:01 | | 48 | NESTED LOOPS | | 1 | 148 | 6 (0)| 00:00:01 | | 49 | NESTED LOOPS | | 1 | 118 | 5 (0)| 00:00:01 | |* 50 | INDEX RANGE SCAN | PS_RQ_GRP_TBL | 1 | 27 | 2 (0)| 00:00:01 | |* 51 | TABLE ACCESS BY INDEX ROWID | REC_SM_STDNT_DEG_COMPLETION | 1 | 91 | 3 (0)| 00:00:01 | |* 52 | INDEX RANGE SCAN | REC1SM_STDNT_DEG_IDX | 1 | | 2 (0)| 00:00:01 | |* 53 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 30 | 1 (0)| 00:00:01 | |* 54 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 18 | 1 (0)| 00:00:01 | | 55 | SORT AGGREGATE | | 1 | 15 | | | | 56 | FIRST ROW | | 1 | 15 | 2 (0)| 00:00:01 | |* 57 | INDEX RANGE SCAN (MIN/MAX) | PS_RQ_GRP_TBL | 1 | 15 | 2 (0)| 00:00:01 | -------------------------------------------------------------------------------------------------------------------------call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 6.59 6.66 0 0 0 0 Execute 1 0.00 0.00 0 0 0 0 Fetch 2 1521.36 4028.91 2256624 240053408 0 841 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 4 1527.95 4035.57 2256624 240053408 0 841
The current production (10.2.0.4), takes 30 secondsElapsed times include waiting on following events: Event waited on Times Max. Wait Total Waited ---------------------------------------- Waited ---------- ------------ SQL*Net message to client 2 0.00 0.00 Disk file operations I/O 3 0.07 0.11 db file sequential read 10829 0.12 16.62 direct path write temp 72445 0.30 293.71 direct path read temp 72445 0.58 2234.14 asynch descriptor resize 22 0.00 0.00 SQL*Net more data to client 9 0.00 0.00 SQL*Net message from client 2 0.84 1.25 ********************************************************************************PLAN_TABLE_OUTPUT ------------------------------------------------------------------------------------------------------------------------- Plan hash value: 2178773127 ------------------------------------------------------------------------------------------------------------------------ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------------------------------------------------ | 0 | SELECT STATEMENT | | 1 | 331 | 89446 (2)| 00:17:54 | | 1 | SORT UNIQUE | | 1 | 331 | 89445 (2)| 00:17:54 | | 2 | NESTED LOOPS | | 1 | 331 | 89440 (2)| 00:17:54 | | 3 | NESTED LOOPS | | 1 | 316 | 89439 (2)| 00:17:54 | |* 4 | HASH JOIN OUTER | | 1 | 298 | 89438 (2)| 00:17:54 | |* 5 | HASH JOIN OUTER | | 1 | 240 | 59625 (2)| 00:11:56 | | 6 | NESTED LOOPS | | 1 | 182 | 29815 (2)| 00:05:58 | |* 7 | TABLE ACCESS FULL | REC_SM_STDNT_DEG_COMPLETION | 1 | 167 | 29814 (2)| 00:05:58 | |* 8 | INDEX FULL SCAN | PS0SMO_RDR_IMP_PLN | 1 | 15 | 1 (0)| 00:00:01 | | 9 | VIEW | | 1 | 58 | 29809 (2)| 00:05:58 | | 10 | HASH GROUP BY | | 1 | 71 | 29809 (2)| 00:05:58 | | 11 | VIEW | | 1 | 71 | 29809 (2)| 00:05:58 | |* 12 | FILTER | | | | | | | 13 | HASH GROUP BY | | 1 | 198 | 29809 (2)| 00:05:58 | | 14 | NESTED LOOPS | | 1 | 198 | 29806 (2)| 00:05:58 | |* 15 | HASH JOIN | | 1 | 171 | 29805 (2)| 00:05:58 | |* 16 | HASH JOIN | | 4 | 572 | 29802 (2)| 00:05:58 | |* 17 | TABLE ACCESS FULL | REC_SM_STDNT_DEG_COMPLETION | 4 | 452 | 29798 (2)| 00:05:58 | | 18 | INDEX FAST FULL SCAN | PS2RQ_MAIN_TBL | 1035 | 31050 | 3 (0)| 00:00:01 | | 19 | INDEX FAST FULL SCAN | PS2RQ_MAIN_TBL | 1035 | 28980 | 3 (0)| 00:00:01 | |* 20 | INDEX RANGE SCAN | PS_RQ_GRP_TBL | 1 | 27 | 1 (0)| 00:00:01 | | 21 | SORT AGGREGATE | | 1 | 15 | | | | 22 | FIRST ROW | | 1 | 15 | 2 (0)| 00:00:01 | |* 23 | INDEX RANGE SCAN (MIN/MAX)| PS_RQ_GRP_TBL | 1 | 15 | 2 (0)| 00:00:01 | | 24 | VIEW | | 1 | 58 | 29813 (2)| 00:05:58 | | 25 | HASH GROUP BY | | 1 | 45 | 29813 (2)| 00:05:58 | | 26 | VIEW | | 1 | 45 | 29813 (2)| 00:05:58 | |* 27 | FILTER | | | | | | | 28 | HASH GROUP BY | | 1 | 199 | 29813 (2)| 00:05:58 | | 29 | NESTED LOOPS | | 1 | 199 | 29810 (2)| 00:05:58 | |* 30 | HASH JOIN | | 1 | 172 | 29809 (2)| 00:05:58 | |* 31 | HASH JOIN | | 8 | 1152 | 29805 (2)| 00:05:58 | |* 32 | TABLE ACCESS FULL | REC_SM_STDNT_DEG_COMPLETION | 7 | 798 | 29802 (2)| 00:05:58 | | 33 | INDEX FAST FULL SCAN | PS2RQ_MAIN_TBL | 1035 | 31050 | 3 (0)| 00:00:01 | | 34 | INDEX FAST FULL SCAN | PS2RQ_MAIN_TBL | 1035 | 28980 | 3 (0)| 00:00:01 | |* 35 | INDEX RANGE SCAN | PS_RQ_GRP_TBL | 1 | 27 | 1 (0)| 00:00:01 | | 36 | SORT AGGREGATE | | 1 | 15 | | | | 37 | FIRST ROW | | 1 | 15 | 2 (0)| 00:00:01 | |* 38 | INDEX RANGE SCAN (MIN/MAX) | PS_RQ_GRP_TBL | 1 | 15 | 2 (0)| 00:00:01 | |* 39 | INDEX RANGE SCAN | PS_RQ_MAIN_TBL | 1 | 18 | 1 (0)| 00:00:01 | | 40 | SORT AGGREGATE | | 1 | 18 | | | | 41 | FIRST ROW | | 1 | 18 | 2 (0)| 00:00:01 | |* 42 | INDEX RANGE SCAN (MIN/MAX) | PS_RQ_MAIN_TBL | 1 | 18 | 2 (0)| 00:00:01 | |* 43 | INDEX RANGE SCAN | PS_RQ_GRP_TBL | 1 | 15 | 1 (0)| 00:00:01 | | 44 | SORT AGGREGATE | | 1 | 15 | | | | 45 | FIRST ROW | | 1 | 15 | 2 (0)| 00:00:01 | |* 46 | INDEX RANGE SCAN (MIN/MAX) | PS_RQ_GRP_TBL | 1 | 15 | 2 (0)| 00:00:01 | ------------------------------------------------------------------------------------------------------------------------call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 1.49 1.51 0 0 0 0 Execute 1 0.00 0.00 0 0 0 0 Fetch 2 18.25 28.63 463672 932215 0 836 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 4 19.75 30.15 463672 932215 0 836
Published by: ngilbert on June 26, 2012 16:40Elapsed times include waiting on following events: Event waited on Times Max. Wait Total Waited ---------------------------------------- Waited ---------- ------------ SQL*Net message to client 2 0.00 0.00 db file scattered read 14262 0.31 13.13 latch: shared pool 1 0.01 0.01 db file sequential read 7 0.00 0.00 direct path write temp 493 0.00 0.00 direct path read temp 493 0.00 0.00 SQL*Net more data to client 40 0.00 0.00 SQL*Net message from client 2 0.83 1.23 ********************************************************************************
Published by: ngilbert on June 26, 2012 16:41Hello
as is almost always the case, your bad plan is the result of messed up the cardinality estimates. The biggest problem seems to be the cardinality in steps 12 and 13 of the bad plan:
| 12 | TABLE ACCESS BY INDEX ROWID | REC_SM_STDNT_DEG_COMPLETION | 26 | 1248 | 15179 (1)| 00:03:03 | |* 13 | INDEX SKIP SCAN | REC0SM_STDNT_DEG_IDX | 26 | | 15168 (1)| 00:03:03 |that is the estimated cardinality is 26. But if we look at the map, we see that the actual number of lines is 4 orders of magnitude (!) higher than that. So of course this goes wrong from there: the optimizer uses weird join methods, wrong join order etc.
And if we look at the predicate:
13 - access("A"."ACAD_CAREER"='UGRD' AND "A"."ACAD_PROG"='UBACH' AND "A"."IMPACT_FLAG"='Y') filter("A"."ACAD_PLAN"="A"."REQ_ACAD_PLAN" AND "A"."ACAD_PROG"='UBACH' AND "A"."IMPACT_FLAG"='Y' AND "A"."ACAD_CAREER"='UGRD')We can assume that the problem is related to the related predicates: you select lines of tables with 4 equality predicates, but 260 k lines survive this filtering. The optimizer thinks that it is closer to 26, not 260 k, but it's probably because the predicates are not really independent.
There is another thing that seems suspicious: filter predicate is redundant with the predicates of access. There is another discussion on OTN not so long ago, and it turned out to be a symptom of a bug (which makes it even more suspect, is that it was also a SKIP SCAN). See:
Re: CBO does not consider cheaper NL-Plan without guidance
Hope that was helpful.
Best regards
Nikolai -
Query in Oracle 10 fast but slow in Oracle 11
Hi all
We have a query that runs smoothly in Oracle 10 g. It takes less then a second. We installed a second server and import/export to create the same 11g database. On this 11g database query takes a long time (like 8 seconds or more).
Here are the details. Maybe someone can tell us the reason why this happens.
We are talking about this statement:
Version of database is 11.2.0.1.0Select nvl(sum(BM_OPENST_D - BM_OPENST_CR),0) from bh.bh123gh where F123_AR_NR>='4400000000' and F123_AR_NR<='4404000000' and F123_KL_LEV_AR_NR='0631001000' and SRT_REK=2 and F123_BKJR>=0000 and F123_BKJR<=2011 and F123_FIRMA=2;
The trace output:SQL> SQL> show parameter optimizer NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ optimizer_capture_sql_plan_baselines boolean FALSE optimizer_dynamic_sampling integer 2 optimizer_features_enable string 11.2.0.1 optimizer_index_caching integer 0 optimizer_index_cost_adj integer 100 optimizer_mode string ALL_ROWS optimizer_secure_view_merging boolean TRUE optimizer_use_invisible_indexes boolean FALSE optimizer_use_pending_statistics boolean FALSE optimizer_use_sql_plan_baselines boolean TRUE SQL> SQL> show parameter db_file_multi NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ db_file_multiblock_read_count integer 6 SQL> SQL> show parameter db_block_size NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ db_block_size integer 8192 SQL> SQL> show parameter cursor_sharing NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ cursor_sharing string EXACT SQL> SQL> column sname format a20 SQL> column pname format a20 SQL> column pval2 format a20 SQL> SQL> select sname 2 , pname 3 , pval1 4 , pval2 5 from 6 sys.aux_stats$; SNAME PNAME PVAL1 PVAL2 -------------------- -------------------- ---------- -------------------- SYSSTATS_INFO STATUS COMPLETED SYSSTATS_INFO DSTART 03-30-2010 11:05 SYSSTATS_INFO DSTOP 03-30-2010 11:05 SYSSTATS_INFO FLAGS 1 SYSSTATS_MAIN CPUSPEEDNW 1183.90219 SYSSTATS_MAIN IOSEEKTIM 10 SYSSTATS_MAIN IOTFRSPEED 4096 SYSSTATS_MAIN SREADTIM SYSSTATS_MAIN MREADTIM SYSSTATS_MAIN CPUSPEED SYSSTATS_MAIN MBRC SYSSTATS_MAIN MAXTHR SYSSTATS_MAIN SLAVETHR 13 rows selected. Elapsed: 00:00:00.03 SQL> SQL> explain plan for 2 Select nvl(sum(BM_OPENST_DEB - BM_OPENST_CR),0) 3 from bh.bh123gh 4 where 5 F123_AR_NR>='4400000000' and 6 F123_AR_NR<='4404000000' and 7 F123_KL_LEV_AR_NR='0631001000' and 8 SRT_REK=2 and 9 F123_BKJR>=0000 and 10 F123_BKJR<=2011 and 11 F123_FIRMA=2; Explained. Elapsed: 00:00:00.10 SQL> SQL> select * from table(dbms_xplan.display); PLAN_TABLE_OUTPUT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Plan hash value: 3488495774 ------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | 38 | 1792 (1)| 00:00:22 | | 1 | SORT AGGREGATE | | 1 | 38 | | | |* 2 | TABLE ACCESS BY INDEX ROWID| BH123GH | 5059 | 187K| 1792 (1)| 00:00:22 | |* 3 | INDEX RANGE SCAN | I_BH123GH_ISABEL | 5059 | | 145 (0)| 00:00:02 | ------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 2 - filter("F123_BKJR">=0000 AND "F123_BKJR"<=2011) 3 - access("F123_FIRMA"=2 AND "SRT_REK"=2 AND "F123_KL_LEV_AR_NR"='0631001000' AND "F123_AR_NR">='4400000000' AND "F123_AR_NR"<='4404000000') filter("F123_AR_NR"<='4404000000' AND "F123_AR_NR">='4400000000') 18 rows selected. Elapsed: 00:00:00.20 SQL> SQL> rollback; Rollback complete. Elapsed: 00:00:00.01 SQL> SQL> rem Set the ARRAYSIZE according to your application SQL> set autotrace traceonly arraysize 100 SQL> SQL> alter session set tracefile_identifier = 'mytrace1'; Session altered. Elapsed: 00:00:00.01 SQL> SQL> rem if you're using bind variables SQL> rem define them here SQL> SQL> rem variable b_var1 number SQL> rem variable b_var2 varchar2(20) SQL> SQL> rem and initialize them SQL> SQL> rem exec :b_var1 := 1 SQL> rem exec :b_var2 := 'DIAG' SQL> SQL> alter session set events '10046 trace name context forever, level 8'; Session altered. Elapsed: 00:00:00.03 SQL> SQL> -- put your statement here SQL> Select nvl(sum(BM_OPENST_D - BM_OPENST_CR),0) 2 from bh.bh123gh 3 where 4 F123_AR_NR>='4400000000' and 5 F123_AR_NR<='4404000000' and 6 F123_KL_LEV_AR_NR='0631001000' and 7 SRT_REK=2 and 8 F123_BKJR>=0000 and 9 F123_BKJR<=2011 and 10 F123_FIRMA=2; Elapsed: 00:00:09.92 Execution Plan ---------------------------------------------------------- Plan hash value: 3488495774 ------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | 38 | 1792 (1)| 00:00:22 | | 1 | SORT AGGREGATE | | 1 | 38 | | | |* 2 | TABLE ACCESS BY INDEX ROWID| BH123GH | 5059 | 187K| 1792 (1)| 00:00:22 | |* 3 | INDEX RANGE SCAN | I_BH123GH_ISABEL | 5059 | | 145 (0)| 00:00:02 | ------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 2 - filter("F123_BKJR">=0000 AND "F123_BKJR"<=2011) 3 - access("F123_FIRMA"=2 AND "SRT_REK"=2 AND "F123_KL_LEV_AR_NR"='0631001000' AND "F123_AR_NR">='4400000000' AND "F123_AR_NR"<='4404000000') filter("F123_AR_NR"<='4404000000' AND "F123_AR_NR">='4400000000') Statistics ---------------------------------------------------------- 1 recursive calls 0 db block gets 11104 consistent gets 9434 physical reads 0 redo size 574 bytes sent via SQL*Net to client 519 bytes received via SQL*Net from client 2 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 1 rows processed SQL> SQL> disconnect Disconnected from Oracle Database 11g Release 11.2.0.1.0 - 64bit Production SQL> SQL> spool off
DBMS_XPLAN. Output DISPLAY_CURSOR:TKPROF: Release 11.2.0.1.0 - Development on Tue Nov 22 13:58:33 2011 Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved. Trace file: C:\Oracle\diag\rdbms\oravopak\oravopak\trace\oravopak_ora_7352_mytrace1.trc Sort options: default ******************************************************************************** count = number of times OCI procedure was executed cpu = cpu time in seconds executing elapsed = elapsed time in seconds executing disk = number of physical reads of buffers from disk query = number of buffers gotten for consistent read current = number of buffers gotten in current mode (usually for update) rows = number of rows processed by the fetch or execute call ******************************************************************************** Select nvl(sum(BM_OPENST_D - BM_OPENST_CR),0) from bh.bh123gh where F123_AR_NR>='4400000000' and F123_AR_NR<='4404000000' and F123_KL_LEV_AR_NR='0631001000' and SRT_REK=2 and F123_BKJR>=0000 and F123_BKJR<=2011 and F123_FIRMA=2 call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.01 0.00 0 0 0 0 Execute 1 0.00 0.00 0 0 0 0 Fetch 2 0.03 9.86 9434 11104 0 1 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 4 0.04 9.87 9434 11104 0 1 Misses in library cache during parse: 1 Optimizer mode: ALL_ROWS Parsing user id: SYS Rows Row Source Operation ------- --------------------------------------------------- 1 SORT AGGREGATE (cr=11104 pr=9434 pw=0 time=0 us) 67250 TABLE ACCESS BY INDEX ROWID BH123GH (cr=11104 pr=9434 pw=0 time=10500177 us cost=1792 size=192242 card=5059) 67250 INDEX RANGE SCAN I_BH123GH_ISABEL (cr=526 pr=550 pw=0 time=44363 us cost=145 size=0 card=5059)(object id 75061) Elapsed times include waiting on following events: Event waited on Times Max. Wait Total Waited ---------------------------------------- Waited ---------- ------------ SQL*Net message to client 2 0.00 0.00 Disk file operations I/O 1 0.00 0.00 db file sequential read 8893 0.10 9.26 db file scattered read 7 0.01 0.05 db file parallel read 1 0.02 0.02 SQL*Net message from client 2 0.00 0.00 ********************************************************************************
SQL> SQL> select * from table(dbms_xplan.display_cursor(null, null, 'ALLSTATS LAST')); PLAN_TABLE_OUTPUT ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SQL_ID g6pkv639sdfgw, child number 0 ------------------------------------- Select /*+ gather_plan_statistics */ nvl(sum(BM_OPENST_DEB - BM_OPENST_CR),0) from bh.bh123gh where F123_AR_NR>='4400000000' and F123_AR_NR<='4404000000' and F123_KL_LEV_AR_NR='0631001000' and SRT_REK=2 and F123_BKJR>=0000 and F123_BKJR<=2011 and F123_FIRMA=2 Plan hash value: 3488495774 -------------------------------------------------------------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | Reads | -------------------------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | 1 |00:00:08.07 | 11104 | 13531 | | 1 | SORT AGGREGATE | | 1 | 1 | 1 |00:00:08.07 | 11104 | 13531 | |* 2 | TABLE ACCESS BY INDEX ROWID| BH123GH | 1 | 5059 | 67250 |00:00:10.90 | 11104 | 13531 | |* 3 | INDEX RANGE SCAN | I_BH123GH_ISABEL | 1 | 5059 | 67250 |00:00:00.05 | 526 | 550 | -------------------------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 2 - filter(("F123_BKJR">=0 AND "F123_BKJR"<=2011)) 3 - access("F123_FIRMA"=2 AND "SRT_REK"=2 AND "F123_KL_LEV_AR_NR"='0631001000' AND "F123_AR_NR">='4400000000' AND "F123_AR_NR"<='4404000000') filter(("F123_AR_NR"<='4404000000' AND "F123_AR_NR">='4400000000')) 27 rows selected. Elapsed: 00:00:01.15 SQL> SQL> spool offAddition to other boards who has been submitted, a few more suggestions:
* It seems that your DB_FILE_MULTIBLOCK_READ_COUNT parameter has been manually set to a value of 6 (or you have the SESSIONS parameter set to a high value with a small CMS). As a general rule, this should only be set under Oracle database 10.2 and higher. See:
http://jonathanlewis.WordPress.com/2007/05/20/system-stats-strategy/* You have statistics of the noworkload system - it will not necessarily change things for the better for this SQL query special, but you might consider to collect statistics of the workload when the system is covered by a typical to high load. See:
http://hoopercharles.WordPress.com/2011/05/04/how-to-collect-statistics/* As Toon mentioned, single block reads dominate the running time. On average, they are quick to 0.001 seconds (1 ms), but many of them are. What is the buffer cache?
* The SQL statement uses the predicates like this WHERE clause: "F123_AR_NR > = ' F123_AR_NR «»<=", which="" i="" believe="" would="" be="" treated="" differently="" in="" cardinality="" calculations="" (2="" unbounded="" ranges)when="" compared="" to="" a="" where="" clause="" that="" uses="" between="" syntax="" (a="" single="" bounded="" range).="" the="" query="" optimizer="" will="" actually="" transform="" the="" between="" syntax="" into="" two="" unbounded="" ranges,="" but="" if="" i="" remember="" correctly,="" it="" will="" remember="" that="" the="" ranges="" are="" bounded="" when="" performing="" the="" cardinality="">
* The DBMS_XPLAN. DISPLAY_CURSOR output shows that the number of blocks read from disk is 13 531 but you get only 11 104 consistent. The number of physical blocks read must be generally less number of becomes coherent. If I remember correctly, the number of readings of physical blocks can be higher if index preloading takes place, or if the intermediate results must be written for the temp tablespace. In this case, it seems that the index preloading takes place.
* It seems that because this query has been run at least 3 times in succession fast, already read of the disk blocks should remain in the buffer cache. This suggests that the buffer cache is too small. Are the BH123GH table and its indexes defined to use the buffer pool KEEP or RECYCLE, yet these buffer pools are not defined?
Charles Hooper
http://hoopercharles.WordPress.com/
IT Manager/Oracle DBA
K & M-making Machine, Inc. -
How to see the info of waiting events. After executing a statement select query
Hello
How to see the info of waiting events. After running a select query. Is there a setting to the value of this option?
And I also want to see the following info. in the trace file. For this, what are the settings I need to adjust to the right?
ConcerningSELECT * FROM emp, dept WHERE emp.deptno = dept.deptno; call count cpu elapsed disk query current rows ---- ------- ------- --------- -------- -------- ------- ------ Parse 1 0.16 0.29 3 13 0 0 Execute 1 0.00 0.00 0 0 0 0 Fetch 1 0.03 0.26 2 2 4 14 Misses in library cache during parse: 1 Parsing user id: (8) SCOTT
EvelyneFor
SQL > show parameter dump;
ORA-00942: table or view does not exist
>
UseGRANT SEECT ON v_$parameter to Your_User_NameFor
SQL > ALTER SESSION SET EVENTS = 10046 trace name forever, context level 12';
ERROR:
ORA-01031: insufficient privileges
>
UseGRANT ALTER SESSION to your_user -
Hello
I have a query to be run by an application (it generates the actual query and execute it) which takes 1 hour or more*.
I try the same me (sql developer), the only difference is I have replace the variables of space booked by values and this quick true course (1 to 2 seconds).
I try the same query through the application in my test DB but it runs very fast.
I go back and here is the result.
A few days ago, it was beautiful. I tried to bounce the DB without change. Nothing strange that I can see in the alerts log.
The number of requests for the fetch below line is huge (19469112), and also the lines plan execution on one of the last lines (index POP_REQUISITION_LINES_VN, lines = 41553286)
Can someone give me a clue as to what is happening?
I can try to delete the index, run the program again and see (I have a feeling I'll have to add the new index if)?
**********************************************************************
********************************************************************************SELECT A1.ROWID,A2.ROWID,A3.ROWID FROM IRMFIN.POP_REQUISITION_HEADERS A1,IRMFIN.POP_REQUISITION_LINES A2, IRMFIN.POP_REQUISITION_LINE_DETAILS A3 WHERE ((((((((((((A1.COMPANY_CODE=:1 AND A1.DIVISION=:2) AND A2.COMPANY_CODE=A1.COMPANY_CODE) AND A2.DIVISION= A1.DIVISION) AND A2.REQUISITION_NUMBER=A1.REQUISITION_NUMBER) AND A2.REQUISITION_STATUS_FLAG=:5) AND A2.REQ_RUN_NUMBER=:6) AND A2.BUYER_CODE= :16) AND A2.POP_SEND_TO_BT_FLAG=:13) AND A3.COMPANY_CODE=A2.COMPANY_CODE) AND A3.DIVISION=A2.DIVISION) AND A3.REQUISITION_NUMBER= A2.REQUISITION_NUMBER) AND A3.REQ_LINE_NUMBER=A2.REQ_LINE_NUMBER) AND A3.ROWID IN (SELECT MIN(A3.ROWID) FROM IRMFIN.POP_REQUISITION_HEADERS A1, IRMFIN.POP_REQUISITION_LINES A2,IRMFIN.POP_REQUISITION_LINE_DETAILS A3 WHERE ((((((((((((A1.COMPANY_CODE=:1 AND A1.DIVISION=:2) AND A2.COMPANY_CODE=A1.COMPANY_CODE) AND A2.DIVISION=A1.DIVISION) AND A2.REQUISITION_NUMBER=A1.REQUISITION_NUMBER) AND A2.REQUISITION_STATUS_FLAG= :5) AND A2.REQ_RUN_NUMBER=:6) AND A2.BUYER_CODE=:16) AND A2.POP_SEND_TO_BT_FLAG=:13) AND A3.COMPANY_CODE=A2.COMPANY_CODE) AND A3.DIVISION=A2.DIVISION) AND A3.REQUISITION_NUMBER=A2.REQUISITION_NUMBER) AND A3.REQ_LINE_NUMBER=A2.REQ_LINE_NUMBER) GROUP BY A3.REQUISITION_NUMBER, A3.REQ_LINE_NUMBER,A3.LINE_SEQUENCE) AND A2.ROWID IN (SELECT MIN(A2.ROWID) FROM IRMFIN.POP_REQUISITION_LINES A2 WHERE (((A2.REQUISITION_STATUS_FLAG=:5 AND A2.REQ_RUN_NUMBER=:6) AND A2.BUYER_CODE=:16) AND A2.POP_SEND_TO_BT_FLAG= :13) GROUP BY REQ_LINE_NUMBER,REQUISITION_NUMBER,DIVISION,COMPANY_CODE) ORDER BY A2.BUYER_CODE ASC,A2.REQUISITION_NUMBER ASC,A2.REQ_LINE_NUMBER ASC call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.00 0.00 0 0 0 0 Execute 1 0.14 0.13 0 0 0 0 Fetch 1 65.12 26.70 3 19469112 0 0 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 3 65.26 26.84 3 19469112 0 0 Misses in library cache during parse: 1 Misses in library cache during execute: 1 Optimizer mode: ALL_ROWS Parsing user id: 63 Rows Row Source Operation ------- --------------------------------------------------- 0 SORT ORDER BY (cr=0 pr=0 pw=0 time=78 us) 0 NESTED LOOPS (cr=0 pr=0 pw=0 time=70 us) 1 NESTED LOOPS (cr=147 pr=2 pw=0 time=19824 us) 1 NESTED LOOPS (cr=145 pr=2 pw=0 time=19803 us) 1 VIEW VW_NSO_1 (cr=144 pr=2 pw=0 time=19782 us) 1 HASH UNIQUE (cr=144 pr=2 pw=0 time=19780 us) 122 HASH GROUP BY (cr=144 pr=2 pw=0 time=18934 us) 122 TABLE ACCESS BY INDEX ROWID POP_REQUISITION_LINES (cr=144 pr=2 pw=0 time=19575 us) 266 INDEX RANGE SCAN POP_REQUISITION_LINES_STATF (cr=2 pr=2 pw=0 time=17117 us)(object id 1768749) 1 TABLE ACCESS BY USER ROWID POP_REQUISITION_LINES (cr=1 pr=0 pw=0 time=17 us) 1 INDEX UNIQUE SCAN POP_REQUISITION_HEADERS (cr=2 pr=0 pw=0 time=19 us)(object id 54788) 0 INDEX RANGE SCAN POP_REQUISITION_LINE_DETAILS (cr=0 pr=0 pw=0 time=5 us)(object id 54790) 0 FILTER (cr=0 pr=0 pw=0 time=18 us) 0 SORT GROUP BY NOSORT (cr=0 pr=0 pw=0 time=16 us) 0 NESTED LOOPS (cr=0 pr=0 pw=0 time=7 us) 0 NESTED LOOPS (cr=0 pr=0 pw=0 time=5 us) 599 INDEX RANGE SCAN POP_REQUISITION_LINE_DETAILS (cr=7 pr=0 pw=0 time=1212 us)(object id 54790) 0 TABLE ACCESS BY INDEX ROWID POP_REQUISITION_LINES (cr=19445166 pr=0 pw=0 time=65092442 us) 41553286 INDEX RANGE SCAN POP_REQUISITION_LINES_VN (cr=128134 pr=0 pw=0 time=10435 us)(object id 477588) 0 INDEX UNIQUE SCAN POP_REQUISITION_HEADERS (cr=0 pr=0 pw=0 time=0 us)(object id 54788)
Published by: BluShadow on March 29, 2011 15:55
addition of {noformat}{noformat} tagsSome reflections on the data you present:
-Column statistics are present since your explain plan command showed 9912 lines that approximates the number of rows divided by the number of distinct values.
-Histograms appear to present since your plan changed after a rebound in the database. This is probably due to bind variable peeking. The first execution after the bounce had a look at the variable binding and I saw status_flag "PO STUDENT." Cost based optimizer has decided that index STATF was not good to use and used the VN index.
Possible solutions:
-Get rid of the histogram on the column status_flag
-Index of your query in order to always use the index STATF
-The above two will create a better plan, but not optimal plan (might be pretty good, however). You can create a better index for this query on the columns you see in the main section of your plan to explain, lines 17 and 18.
I hope this helps.
Kind regards
Rob. -
SQL Query Execute County tkprof
Hi all
I have the query that is slow.
I know that this may be a bug or something else. But I have another question, then thisSELECT MAX(ID) FROM ID_TAB WHERE R_ID = :B1 call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 0 0.00 0.00 0 0 0 0 Execute 649574 117.93 127.29 0 0 0 0 Fetch 649574 20.40 20.85 0 1948722 0 649574 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 1299148 138.33 148.14 0 1948722 0 649574 Misses in library cache during parse: 0 Optimizer mode: ALL_ROWS Parsing user id: 65 (recursive depth: 2) Elapsed times include waiting on following events: Event waited on Times Max. Wait Total Waited ---------------------------------------- Waited ---------- ------------ cursor: pin S wait on X 133 0.03 2.13 cursor: pin S 1179 0.00 0.01
Why is he running count so much. I think that run County increase when you DML? If this is not the case, what are the other scenerios where it can increase run County.Nico wrote:
Thanks for the reply. Another instanceThe index is here:
recursive depth: 2* SQL executed directly by a user runs in the recursive depth: 0
* SQL in a PL/SQL procedure called by SQL run directly by a user runs in the recursive depth: 1
* SQL executed within a trigger that executes automatically in response to SQL run directly by a user runs in the recursive depth: 1
* SQL executed directly by a user who calls a PL/SQL procedure that then causes a trigger is a way to get a recursive depth: 2
* SQL executed directly by a user who calls a PL/SQL procedure that then calls a second PL/SQL procedure is another way to get a recursive depth: 2Possible cause: suppose you have a trigger that fires at each change of rank. A user session wishes to insert a large number of rows into a table, then it calls a PL/SQL procedure to handle the task. The PL/SQL procedure running insert statements, and after each insert statement is triggered, a trigger is activated for the sequential number next to a column in the table (or a separate record) by running "SELECT MAX (ID) OF ID_TAB WHERE R_ID =: B1" in the database.
Charles Hooper
Co-author of "Expert Oracle practices: Oracle Database Administration of the Oak Table.
http://hoopercharles.WordPress.com/
IT Manager/Oracle DBA
K & M-making Machine, Inc. -
Slow index by using the query. Fast with full table Scan.
Salvation;
(Thanks for the links)
Here's my question correctly formatted.
The query:
Works on 32 seconds!SELECT count(1) from ehgeoconstru ec where ec.TYPE='BAR' AND ( ec.birthDate <= TO_DATE('2009-10-06 11:52:12', 'YYYY-MM-DD HH24:MI:SS') ) and deathdate is null and substr(ec.strgfd, 1, length('[CIMText')) <> '[CIMText'
Same query, but with an extra where clause:
This is 400 seconds.SELECT count(1) from ehgeoconstru ec where ec.TYPE='BAR' and ( (ec.contextVersion = 'REALWORLD') --- ADDED HERE AND ( ec.birthDate <= TO_DATE('2009-10-06 11:52:12', 'YYYY-MM-DD HH24:MI:SS') ) ) and deathdate is null and substr(ec.strgfd, 1, length('[CIMText')) <> '[CIMText'
It should return data from a table, given the conditions.
The database version is Oracle9i Release 9.2.0.7.0
These are the parameters relevant for the optimizer:
Here is the output of the PLAN to EXPLAIN for the first quick query:SQL> show parameter optimizer NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ optimizer_dynamic_sampling integer 1 optimizer_features_enable string 9.2.0 optimizer_index_caching integer 99 optimizer_index_cost_adj integer 10 optimizer_max_permutations integer 2000 optimizer_mode string CHOOSE SQL>
Here is the output of the EXPLAIN of PLAN for slow queries:PLAN_TABLE_OUTPUT -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost | -------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | | | | | 1 | SORT AGGREGATE | | | | | |* 2 | TABLE ACCESS FULL | EHCONS | | | | -------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- PLAN_TABLE_OUTPUT -------------------------------------------------------------------------------- 2 - filter(SUBSTR("EC"."strgfd",1,8)<>'[CIMText' AND "EC"."DEATHDATE" IS NULL AND "EC"."BIRTHDATE"<=TO_DATE('2009-10-06 11:52:12', 'yyyy -mm-dd hh24:mi:ss') AND "EC"."TYPE"='BAR') Note: rule based optimization
The TKPROF output for this slow statement is:PLAN_TABLE_OUTPUT -------------------------------------------------------------------------------- | | | 1 | SORT AGGREGATE | | | | | |* 2 | TABLE ACCESS BY INDEX ROWID| ehgeoconstru | | | | |* 3 | INDEX RANGE SCAN | ehgeoconstru_VSN | | | | PLAN_TABLE_OUTPUT -------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 2 - filter(SUBSTR("EC"."strgfd",1,8)<>'[CIMText' AND "EC"."DEATHDATE" IS NULL AND "EC"."TYPE"='BAR') PLAN_TABLE_OUTPUT -------------------------------------------------------------------------------- 3 - access("EC"."CONTEXTVERSION"='REALWORLD' AND "EC"."BIRTHDATE"<=TO_DATE('2 009-10-06 11:52:12', 'yyyy-mm-dd hh24:mi:ss')) filter("EC"."BIRTHDATE"<=TO_DATE('2009-10-06 11:52:12', 'yyyy-mm-dd hh24: mi:ss')) Note: rule based optimization
Published by: PauloSMO on November 17, 2009 04:21TKPROF: Release 9.2.0.7.0 - Production on Tue Nov 17 14:46:32 2009 Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved. Trace file: gen_ora_3120.trc Sort options: prsela exeela fchela ******************************************************************************** count = number of times OCI procedure was executed cpu = cpu time in seconds executing elapsed = elapsed time in seconds executing disk = number of physical reads of buffers from disk query = number of buffers gotten for consistent read current = number of buffers gotten in current mode (usually for update) rows = number of rows processed by the fetch or execute call ******************************************************************************** SELECT count(1) from ehgeoconstru ec where ec.TYPE='BAR' and ( (ec.contextVersion = 'REALWORLD') AND ( ec.birthDate <= TO_DATE('2009-10-06 11:52:12', 'YYYY-MM-DD HH24:MI:SS') ) ) and deathdate is null and substr(ec.strgfd, 1, length('[CIMText')) <> '[CIMText' call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.00 0.00 0 0 0 0 Execute 1 0.00 0.00 0 0 0 0 Fetch 2 0.00 538.12 162221 1355323 0 1 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 4 0.00 538.12 162221 1355323 0 1 Misses in library cache during parse: 0 Optimizer goal: CHOOSE Parsing user id: 153 Rows Row Source Operation ------- --------------------------------------------------- 1 SORT AGGREGATE 27747 TABLE ACCESS BY INDEX ROWID OBJ#(73959) 2134955 INDEX RANGE SCAN OBJ#(73962) (object id 73962) ******************************************************************************** alter session set sql_trace=true call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 0 0.00 0.00 0 0 0 0 Execute 1 0.00 0.02 0 0 0 0 Fetch 0 0.00 0.00 0 0 0 0 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 1 0.00 0.02 0 0 0 0 Misses in library cache during parse: 0 Misses in library cache during execute: 1 Optimizer goal: CHOOSE Parsing user id: 153 ******************************************************************************** OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.00 0.00 0 0 0 0 Execute 2 0.00 0.02 0 0 0 0 Fetch 2 0.00 538.12 162221 1355323 0 1 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 5 0.00 538.15 162221 1355323 0 1 Misses in library cache during parse: 0 Misses in library cache during execute: 1 OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 0 0.00 0.00 0 0 0 0 Execute 0 0.00 0.00 0 0 0 0 Fetch 0 0.00 0.00 0 0 0 0 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 0 0.00 0.00 0 0 0 0 Misses in library cache during parse: 0 2 user SQL statements in session. 0 internal SQL statements in session. 2 SQL statements in session. ******************************************************************************** Trace file: gen_ora_3120.trc Trace file compatibility: 9.02.00 Sort options: prsela exeela fchela 2 sessions in tracefile. 2 user SQL statements in trace file. 0 internal SQL statements in trace file. 2 SQL statements in trace file. 2 unique SQL statements in trace file. 94 lines in trace file.
Published by: PauloSMO on November 17, 2009 07:07
Published by: PauloSMO on November 17, 2009 07:38 - title changed to be more correct.Although your optimizer_mode is choosing, it seems that there are no statistics collected on ehgeoconstru. The absence of estimated costs and estimated row counts of each of the stages of the plan and the "Note: optimization based on rules" at the end of these two plans would tend to confirm this.
Optimizer_mode choose means that if statistics are collected then it will use the CBO, but if no statistic is present in any of the tables in the query, the optimizer to rule will be used. The RBO tends to be happy in the best of the index case. I guess the index ehgeoconstru_VSN contextversion as the main column and also includes the date of birth.
You can either gather statistics on the table (if all other tables have statistics) using dbms_stats.gather_table_stats, or suggest the query to use a full scan instead of index. Another solution would be to apply a function or an operation against the contextversion to prevent the use of the index. something like this:
SELECT COUNT(*) FROM ehgeoconstru ec WHERE ec.type='BAR' and ec.contextVersion||'' = 'REALWORLD' ec.birthDate <= TO_DATE('2009-10-06 11:52:12', 'YYYY-MM-DD HH24:MI:SS') and deathdate is null and SUBSTR(ec.strgfd, 1, LENGTH('[CIMText')) <> '[CIMText'or maybe UPPER (ec.contextVersion) so that would not change the rows returned.
John
-
long-term query work - included steps proposed by Randolf
Hello
I did my best to follow the statement Randolf Word-by-Word and hope to get the solution for my
problem soon. Sometimes back, I posted a thread about this problem then occupied with others
stuff and wasn't able to follow. Here I am again with the same question.
Here's the link to my previous post
Here is the bottom of my requriemment.long running query in database 10g
I'm working on Oracle forms 10g, which uses the package below. We want to display the information about the customer
with order County ADB on different status as pending, error, back-Order, expedited, shipping of std.
Output will look like.
There are 40 customers total. The long-running query are accelerated and the delivery of std.client name pending error backorder expedited std shipping ABC 24 0 674 6789 78900 XYZ 35 673 5700 0 798274 . . .
When I run the package of Oracle Developer of shape, it takes 3 minutes to run but when I run the same query in our application using forms
(who uses Oracle Application Server) it takes about 1 hour, which is totally unacceptable.
The user wants it be done in less than 1 minute.
I tried to combine together in the waiting, error and out of stock of queries, but AFAIK this is not
work in the form of Oracle that we need a placeholder for each situation.
Please don't think this is the related issue of forms, it's a performance problem.
the query that takes a long time isPACKAGE BODY ORDER_COUNT_PKG IS PROCEDURE post_query IS BEGIN BEGIN SELECT count(*) INTO :ORDER_STATUS.PENDING FROM orders o WHERE o.status = 'P' AND (parent_order_id is null OR (order_type='G' AND parent_order_id=original_order_number)) AND o.client = :ORDER_STATUS.CLIENT_NUMBER; EXCEPTION WHEN OTHERS THEN NULL; END; BEGIN SELECT count(*) INTO :ORDER_STATUS.ERROR FROM orders o WHERE o.status = 'E' AND (parent_order_id is null OR (order_type='G' AND parent_order_id=original_order_number)) AND o.client = :ORDER_STATUS.CLIENT_NUMBER; EXCEPTION WHEN OTHERS THEN NULL; END; BEGIN SELECT count(*) INTO :ORDER_STATUS.BACK_ORDER FROM orders o WHERE o.status = 'B' AND (parent_order_id is null OR (order_type='G' AND parent_order_id=original_order_number)) AND o.client = :ORDER_STATUS.CLIENT_NUMBER; EXCEPTION WHEN OTHERS THEN NULL; END; BEGIN SELECT count(*) INTO :ORDER_STATUS.EXPEDITE FROM orders o,shipment_type_methods stm WHERE o.status in ('A','U') AND (o.parent_order_id is null OR (o.order_type = 'G' AND o.parent_order_id = o.original_order_number)) AND o.client = stm.client AND o.shipment_class_code = stm.shipment_class_code AND (nvl(o.priority,'1') = '2' OR stm.surcharge_amount <> 0) AND o.client = :ORDER_STATUS.CLIENT_NUMBER GROUP BY o.client; EXCEPTION WHEN OTHERS THEN NULL; END; BEGIN SELECT count(*) INTO :ORDER_STATUS.STD_SHIP FROM orders o,shipment_type_methods stm WHERE o.status in ('A','U') AND (o.parent_order_id is null OR (o.order_type = 'G' AND o.parent_order_id = o.original_order_number)) AND nvl(o.priority,'1') <> '2' AND o.client = stm.client AND o.shipment_class_code = stm.shipment_class_code AND stm.surcharge_amount = 0 AND o.client = :ORDER_STATUS.CLIENT_NUMBER GROUP BY o.client; EXCEPTION WHEN OTHERS THEN NULL; END; END post_query; END ORDER_COUNT_PKG;
The version of the database is 10.2.1.0.2SELECT count(*) FROM orders o,shipment_type_methods stm WHERE o.status in ('A','U') AND (o.parent_order_id is null OR (o.order_type = 'G' AND o.parent_order_id = o.original_order_number)) AND nvl(o.priority,'1') <> '2' AND o.client = stm.client AND o.shipment_class_code = stm.shipment_class_code AND stm.surcharge_amount = 0 AND o.client = :CLIENT_NUMBER GROUP BY o.client
These are the parameters relevant for the optimizer:SQL> alter session force parallel dml;
Here is the output of the EXPLAIN PLAN of:SQL> show parameter user_dump_dest NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ user_dump_dest string /u01/app/oracle/admin/mcgemqa/ udump SQL> show parameter optimizer NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ optimizer_dynamic_sampling integer 2 optimizer_features_enable string 10.2.0.4 optimizer_index_caching integer 0 optimizer_index_cost_adj integer 100 optimizer_mode string ALL_ROWS optimizer_secure_view_merging boolean TRUE SQL> show parameter db_file_multi NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ db_file_multiblock_read_count integer 16 SQL> show parameter db_block_size NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ db_block_size integer 8192 SQL> show parameter cursor_sharing NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ cursor_sharing string EXACT
Here is the output of SQL * Plus AUTOTRACE, including CALENDAR information:SQL> explain plan for 2 SELECT count(*) 3 FROM orders o,shipment_type_methods stm 4 WHERE o.status in ('A','U') 5 AND (o.parent_order_id is null 6 OR (o.order_type = 'G' 7 AND o.parent_order_id = o.original_order_number)) 8 AND nvl(o.priority,'1') <> '2' 9 AND o.client = stm.client 10 AND o.shipment_class_code = stm.shipment_class_code 11 AND stm.surcharge_amount = 0 12 AND o.client = :CLIENT_NUMBER 13 GROUP BY o.client 14 / Explained. Elapsed: 00:00:00.12 SQL> select * from table(dbms_xplan.display); PLAN_TABLE_OUTPUT ---------------------------------------------------------------------------------------------------- Plan hash value: 559278019 ---------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ---------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | 35 | 46764 (3)| 00:09:22 | | 1 | SORT GROUP BY NOSORT | | 1 | 35 | 46764 (3)| 00:09:22 | |* 2 | TABLE ACCESS BY INDEX ROWID | ORDERS | 175K| 3431K| 25979 (3)| 00:05:12 | | 3 | NESTED LOOPS | | 25300 | 864K| 46764 (3)| 00:09:22 | |* 4 | TABLE ACCESS BY INDEX ROWID| SHIPMENT_TYPE_METHODS | 1 | 15 | 2 (0)| 00:00 |* 5 | INDEX RANGE SCAN | U_SHIPMENT_TYPE_METHODS | 2 | | 1 (0)| 00:00:01 | |* 6 | INDEX RANGE SCAN | ORDERS_ORDER_DATE | 176K| | 2371 (8)| 00:00:29 | ---------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 2 - filter(("O"."PARENT_ORDER_ID" IS NULL OR "O"."ORDER_TYPE"='G' AND "O"."PARENT_ORDER_ID"=TO_NUMBER("O"."ORIGINAL_ORDER_NUMBER")) AND NVL("O"."PRIORITY",'1')<>'2 AND "O"."SHIPMENT_CLASS_CODE"="STM"."SHIPMENT_CLASS_CODE") 4 - filter("STM"."SURCHARGE_AMOUNT"=0) 5 - access("STM"."CLIENT"=:CLIENT_NUMBER) 6 - access("O"."CLIENT"=:CLIENT_NUMBER) filter("O"."STATUS"='A' OR "O"."STATUS"='U') 24 rows selected. Elapsed: 00:00:00.86 SQL> rollback; Rollback complete. Elapsed: 00:00:00.07
The TKPROF output for that statement looks like the following:SQL> SELECT count(*) 2 FROM orders o,shipment_type_methods stm 3 WHERE o.status in ('A','U') 4 AND (o.parent_order_id is null 5 OR (o.order_type = 'G' 6 AND o.parent_order_id = o.original_order_number)) 7 AND nvl(o.priority,'1') <> '2' 8 AND o.client = stm.client 9 AND o.shipment_class_code = stm.shipment_class_code 10 AND stm.surcharge_amount = 0 11 AND o.client = :CLIENT_NUMBER 12 GROUP BY o.client 13 / Elapsed: 00:00:03.09 Execution Plan ---------------------------------------------------------- Plan hash value: 559278019 ---------------------------------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ---------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | 35 | 46764 (3)| 00:09:22 | | 1 | SORT GROUP BY NOSORT | | 1 | 35 | 46764 (3)| 00:09:22 | |* 2 | TABLE ACCESS BY INDEX ROWID | ORDERS | 175K| 3431K| 25979 (3)| 00:05:12 | | 3 | NESTED LOOPS | | 25300 | 864K| 46764 (3)| 00:09:22 | |* 4 | TABLE ACCESS BY INDEX ROWID| SHIPMENT_TYPE_METHODS | 1 | 15 | 2 (0)| 00:00 |* 5 | INDEX RANGE SCAN | U_SHIPMENT_TYPE_METHODS | 2 | | 1 (0)| 00:00:01 | |* 6 | INDEX RANGE SCAN | ORDERS_ORDER_DATE | 176K| | 2371 (8)| 00:00:29 | ---------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 2 - filter(("O"."PARENT_ORDER_ID" IS NULL OR "O"."ORDER_TYPE"='G' AND "O"."PARENT_ORDER_ID"=TO_NUMBER("O"."ORIGINAL_ORDER_NUMBER")) AND NVL("O"."PRIORITY",'1')<>'2 AND "O"."SHIPMENT_CLASS_CODE"="STM"."SHIPMENT_CLASS_CODE") 4 - filter("STM"."SURCHARGE_AMOUNT"=0) 5 - access("STM"."CLIENT"=:CLIENT_NUMBER) 6 - access("O"."CLIENT"=:CLIENT_NUMBER) filter("O"."STATUS"='A' OR "O"."STATUS"='U') Statistics ---------------------------------------------------------- 55 recursive calls 0 db block gets 7045 consistent gets 0 physical reads 0 redo size 206 bytes sent via SQL*Net to client 238 bytes received via SQL*Net from client 2 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 1 rows processed SQL> disconnect Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL>
DBMS_XPLAN. Output DISPLAY_CURSOR:SELECT count(*) FROM orders o,shipment_type_methods stm WHERE o.status in ('A','U') AND (o.parent_order_id is null OR (o.order_type = 'G' AND o.parent_order_id = o.original_order_number)) AND nvl(o.priority,'1') <> '2' AND o.client = stm.client AND o.shipment_class_code = stm.shipment_class_code AND stm.surcharge_amount = 0 AND o.client = :CLIENT_NUMBER GROUP BY o.client call count cpu elapsed disk query current rows ------- ------ -------- ---------- ---------- ---------- ---------- ---------- Parse 1 0.01 0.00 0 0 0 0 Execute 1 0.04 0.04 0 0 0 0 Fetch 2 2.96 2.91 0 7039 0 1 ------- ------ -------- ---------- ---------- ---------- ---------- ---------- total 4 3.01 2.95 0 7039 0 1 Misses in library cache during parse: 1 Misses in library cache during execute: 1 Optimizer mode: ALL_ROWS Parsing user id: 95 Rows Row Source Operation ------- --------------------------------------------------- 1 SORT GROUP BY NOSORT (cr=7039 pr=0 pw=0 time=2913701 us) 91 TABLE ACCESS BY INDEX ROWID ORDERS (cr=7039 pr=0 pw=0 time=261997906 us) 93 NESTED LOOPS (cr=6976 pr=0 pw=0 time=20740 us) 1 TABLE ACCESS BY INDEX ROWID SHIPMENT_TYPE_METHODS (cr=2 pr=0 pw=0 time=208 us) 3 INDEX RANGE SCAN U_SHIPMENT_TYPE_METHODS (cr=1 pr=0 pw=0 time=88 us)(object id 81957) 91 INDEX RANGE SCAN ORDERS_ORDER_DATE (cr=6974 pr=0 pw=0 time=70 us)(object id 81547) Elapsed times include waiting on following events: Event waited on Times Max. Wait Total Waited ---------------------------------------- Waited ---------- ------------ SQL*Net message to client 2 0.00 0.00 SQL*Net message from client 2 0.02 0.02 ********************************************************************************
I can't wait for suggestions to improve the performance of this statement.SQL> variable CLIENT_NUMBER varchar2(20) SQL> exec :CLIENT_NUMBER := '14' PL/SQL procedure successfully completed. Elapsed: 00:00:00.06 SQL> SELECT /*+ gather_plan_statistics */ count(*) 2 FROM orders o,shipment_type_methods stm 3 WHERE o.status in ('A','U') 4 AND (o.parent_order_id is null 5 OR (o.order_type = 'G' 6 AND o.parent_order_id = o.original_order_number)) 7 AND nvl(o.priority,'1') <> '2' 8 AND o.client = stm.client 9 AND o.shipment_class_code = stm.shipment_class_code 10 AND stm.surcharge_amount = 0 11 AND o.client = :CLIENT_NUMBER 12 GROUP BY o.client 13 / COUNT(*) ---------- 91 Elapsed: 00:00:02.85 SQL> set termout on SQL> select * from table(dbms_xplan.display_cursor(null, null, 'ALLSTATS LAST')); PLAN_TABLE_OUTPUT ---------------------------------------------------------------------------------------------------- SQL_ID 4nfj368y8w6a3, child number 0 ------------------------------------- SELECT /*+ gather_plan_statistics */ count(*) FROM orders o,shipment_type_methods stm WHERE o.status in ('A','U') AND (o.parent_order_id is null OR (o.order_type = 'G' AND o.parent_order_id = o.original_order_number)) AND nvl(o.priority,'1') <> '2' AND o.client = stm.client AND o.shipment_class_code = stm.shipment_class_code AND stm.surcharge_amount = 0 AND o.client = :CLIENT_NUMBER GROUP BY o.client Plan hash value: 559278019 ---------------------------------------------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | ---------------------------------------------------------------------------------------------------- | 1 | SORT GROUP BY NOSORT | | 1 | 1 | 1 |00:00:02.63 | 7039 | |* 2 | TABLE ACCESS BY INDEX ROWID | ORDERS | 1 | 175K| 91 |00:03:56.87 | 7039 | | 3 | NESTED LOOPS | | 1 | 25300 | 93 |00:00:00.02 | 6976 | |* 4 | TABLE ACCESS BY INDEX ROWID| SHIPMENT_TYPE_METHODS | 1 | 1 | 1 |00:00:00.01 | 2 | |* 5 | INDEX RANGE SCAN | U_SHIPMENT_TYPE_METHODS | 1 | 2 | 3 |00:00:00.01 | 1 | |* 6 | INDEX RANGE SCAN | ORDERS_ORDER_DATE | 1 | 176K| 91 |00:00:00.01 | 6974 | ---------------------------------------------------------------------------------------------------- Predicate Information (identified by operation id): --------------------------------------------------- 2 - filter((("O"."PARENT_ORDER_ID" IS NULL OR ("O"."ORDER_TYPE"='G' AND "O"."PARENT_ORDER_ID"=TO_NUMBER("O"."ORIGINAL_ORDER_NUMBER"))) AND NVL("O"."PRIORITY",'1')<>' "O"."SHIPMENT_CLASS_CODE"="STM"."SHIPMENT_CLASS_CODE")) 4 - filter("STM"."SURCHARGE_AMOUNT"=0) 5 - access("STM"."CLIENT"=:CLIENT_NUMBER) 6 - access("O"."CLIENT"=:CLIENT_NUMBER) filter(("O"."STATUS"='A' OR "O"."STATUS"='U')) 32 rows selected. Elapsed: 00:00:01.30 SQL>
Thank you
SandyOK Sandy, progress. It is now 'down' to 30 minutes just because you are only running a query in this form, not five or three, but it's still about 29 minutes and 57 seconds longer that he should take. You will see results of the above query you posted, that all WAIT events are ' SQL * Net client message ', which means that the database server is waiting for communication from the application server. Some massive waits, one of 2 290 696 seconds, which is equal to 26 days! It could be someone who has logged, but now gone on vacation. Recognize a name of machine, where it is the Ap Server?
But you know now that your query will be executed quickly, and I'm not sure what OEM recommended implementation plan, he could only use a Scan of full Table instead of an analysis of index range on orders, which would make sense since you are now picking up five statuses of command where before you were only picking up 3 or 2 in each SELECTION. So, is not a problem per se database, it is a problem of the Ap server and from there you could better raise the problem in this subforum: Business Intelligence Applications and it may well be interesting to try that I proposed yesterday to clone among other forms of 'good' and just Exchange procedures. Good luck with it!
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