MySQL to Oracle using LKM SQL to Oracle, poor performance
Hello
I'm on the underside of technology.
I'm try to use ODI to import data from MySQL to Oracle using the LKM SQL to Oracle, it works well for small amounts of documents but once volumes go higher it performs very badly.
I'm replacing an integration of existing HS dblink to 44 seconds and ODI is 9 minutes.
The MySQL and Oracle DB are on the same host with an autonomous ODI agent on the same host.
MySQL 5.6.21
Oracle 11.2.0.4
Oracle Data Integrator 12.1.3
I may try a different approach to dumping the MySQL table to a flat file and import from external table or sqlldr but y at - it a way to make the LKM SQL for Oracle perform better?
Hello
This problem has been resolved.
I was setting the table sizes in batches on the data source server, after you set the values on the target data server is it now works as expected.
Using a value of 5,000 for the two tables has reduced the operating time of 9 minutes to about 40 seconds.
Tags: Business Intelligence
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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).
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Migration from MySQL to Oracle SQL does not
Hello everyone,
I am new to Oracle SQL, but since our MySQL database is more and get more slowly, I would like to test the performance of Oracle SQL.
So, I downloaded the current Oracle Linux distro and installed Oracle Database 11 g Express Edition.
I connected with Oracle SQL Developer and started to migrate the MySQL database by following each step of this tutorial.
I had to abandon all the privileges of the user migration (otherwise the creation and the deleteion of the migration repository did not) and I have disabled the migration of constraints to make migration work.
Then I proceeded through all of the steps of the tutorial and ended with a "successful migration.
The last step of the tutorial, it was to connect to the db migrated (using a combination of username/password generated name), it was not possible.
What do I already checked?
- Logged on as user system, I see that there is no new user created for the migrated db
- Looking at the overview in the migration repository I see 3 phases, not knowing if the third displays an error or if it is not necessary at all (I got 58 tables in the db of the source)
- Capture of 58/58
- Convert 58/58
- Compile 0/58
From here, I don't know where to look for additional errors.
I still can't use the migrated db and so I can't go forward with my tests.
I missed something?
I would appreciate your help.
Astaldo
Astaldo salvation,
First, you must use SQL Developer 4.0.2 If you aren't already. It is available for free on OTN
http://www.Oracle.com/technetwork/developer-tools/SQL-Developer/downloads/index-098778.html
There are two ways to convert tables from MySQL to Oracle.
1) copy to Oracle
(2) migration to Oracle.
Copy to Oracle is the simplest method. It does not imply the creation of a repository of migration. But it only migrates data without constraints or default values or indexes and tables. The set of data to move should be reasonably low as it is moved on JDBC.
It may suit your purpose to try to Oracle.
http://dermotoneill.blogspot.co.UK/2010/11/copy-to-Oracle.html
Migrate Oracle requires the implementation of a migration repository. But he migrate the default settings, constraints, and indexes and can also provide scripts offline data move that can manage the circulation of large data sets.
Here is a small script to create a new MIGRATIONREPO user, and grant the correct privileges.
CREATE USER MIGRATIONREPO IDENTIFIED BY oracle.
ALTER USER MIGRATIONREPO QUOTA UNLIMITED ON USERS;
GRANT CONNECT, RESOURCE, CREATE VIEW, CREATE MATERIALIZED VIEW to MIGRATIONREPO;
Then using SQL Developer, create a connection to MIGRATIONREPO, right-click on the connection and choose "associate the Migration repository.
I hope you have success best creation of migration with the privileges of theses repository.
Migration Wizard step 8: target database
Choose Offline Mode.
This will present you with a build script that you can inspect before the race.
The build script must be run using the SQL Developer worksheet and choose free user sufficiently privileged in Oracle generally SYSTEM.
Note that if you would rather work with the repository you must currently you can browse your browser of Migration.
Access converted database objects, right-click and select "generate the target".
This will again open the Migration Wizard in step 8. Allowing you to choose Offline Mode so that you can review the build script.
Hope this helps,
Kind regards
Dermot.
SQL development team.
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Query using HS returns all fields of MySQL to ORACLE
Hello
Using HS to connect from oracle 10204 to MySql 5
Run the following statement using Oracle dblink:
After the level setting ON a trace on the server getway, the trace file indicates all the varchar column are ignored!SELECT * From "Custom_XDR"@MySql
The strucher of the table in Mysql is as follows:ORACLE GENERIC GATEWAY Log File Started at 2011-02-08T11:17:42 hoadtab(26); Entered. Table 1 - Custom_XDR Skipped field h323_conf_id, unrecognized datatype. Skipped field user_agent1, unrecognized datatype. Skipped field user_agent2, unrecognized datatype. Skipped field ip1, unrecognized datatype. Skipped field ip2, unrecognized datatype. Warning: index h323 is ignored. hoapars(15); Entered. Sql Text is: SELECT A1."id",A1."bill_time",A1."i_env",A1."last_modified1",A1."last_modified2" FROM "Custom_XDR" A1
Please advice.SQL> desc Custom_XDR +----------------+-------------------------+-----+----+---------------------+-----------------+ | Field | Type | Null| Key| Default | Extra | +----------------+-------------------------+-----+----+---------------------+-----------------+ | id | int(10) unsigned | NO | PRI| | auto_increment | | h323_conf_id | varchar(36) | NO | MUL| | | | bill_time | datetime | NO | | | | | i_env | tinyint(1) unsigned | NO | | | | | user_agent1 | varchar(50) | NO | | | | | user_agent2 | varchar(50) | YES | | | | | ip1 | varchar(15) | NO | | | | | ip2 | varchar(15) | YES | | | | | last_modified1 | timestamp | NO | | 0000-00-00 00:00:00 | | | last_modified2 | timestamp | NO | | 0000-00-00 00:00:00 | | +----------------+-------------------------+-----+----+---------------------+-----------------+
Thank youAs Mike points out in its update the sql.log you downloaded on demand service displays the type of data-9 which is the sql_wvarchar which is not supported.
Take a look at the manual of hsodbc:
http://download.Oracle.com/docs/CD/B19306_01/server.102/b14232/APB.htm#sthref509Oracle® database
Heterogeneous Connectivity Administrator's Guide
10g Release 2 (10.2)
B14232-01B.1 mapping Types of data ANSI to Oracle via an ODBC Interface Data Types
=>, this data type is missing.DG4ODBC, the product of the follow-up HSODBC support it. HSODBC was desupported since 2008 and no more features will be added to it. So you might think of the update to the supported version of DG4ODBC which can be used with the Oracle version 10.2.0.4/10.2.0.5 and 11g database.
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Convert .xls in .csv file using pl/sql or any other method (oracle 9i)
Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64 bit Production
With partitioning, OLAP and Oracle Data Mining options
Release 9.2.0.8.0 - Production jserver
10.1.2.0.2 generator
ORACLE Server Release 10.1.0.4.2
Oracle 10.1.2.0.2 procedure generator
Oracle ORACLE PL/SQL V10.1.0.4.2 - Production
Oracle 10.1.0.4.0 Production CORE
Integration Services 10.1.2.0.2 tools Oracle
Space common tools Oracle 10.1.2.0.2
Oracle Toolkit 2 for 32-bit Windows, 10.1.2.0.2 platforms
Resource object 10.1.2.0.2 store
Oracle Help 10.1.2.0.2
Oracle Sqlmgr 10.1.2.0.2
Query Oracle 10.1.2.0.2 - Production Designer
PL/SQL Editor (c) WinMain Software (www.winmain.com), v1.0 (Production)
Oracle ZRC 10.1.2.0.2
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Virtual graphics system Oracle 10.1.2.0.2
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Widget media Oracle 10.1.2.0.2
The GUI utility 10.1.2.0.2 tools Oracle
I had seen a very old post of 2009.
Convert .xls in .csv file using pl/sql
I know that it s a long time but just wanted to know if there is a way to convert excel .csv.
I have a directory say 'F:\purple_top\ '. I'll get the .xls file in this directory. I need to change to .csv and tables load external oracle. Any ideas or advance coding on it since 2009 so far?
A few other options might be:
- Java code, which can be used from within Oracle, which makes use of utility libraries (e.g. Aspose.Cells) open source (for example Apache POI) or "save under" CSV, or read the source cells and their output to a CSV file.
- COM Automation, using available open source (for example, JACOB or j-interop) or commercial libraries, which can automate Excel to open a XLS file and "Save as" a CSV file. In addition, Oracle has a feature of COM Automation (available since version 8 but abandoned after Oracle 11g). I have successfully used this read (non-macro-enabled) Excel files in PL/SQL.
- Other approaches using Perl or PHP can be found by googling 'convert xls to csv.
Gerard
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ODI 12 - problem with LKM SQL for Oracle
Hi again,
Three days ago, that I asked about the problem with the data types of data warehouses in models that were missing. After you apply the ideas suggested by Rita (thank you very much ) I got from their work.
But after that, we came across a new problem. When you run a mapping (Oracle for Oracle databases), it failed on the second stage - ' "work table create. "When we checked the generated code was something like this: '(" CREATE TABLE < work_table_name >). None of the names of columns or data types have been described in parentheses and as expected, the ODI execution error was "invalid identifier". It seems that API
odiRef.getColList(params)%>does not work. I tried loading using LKM Oracle Oracle (DB LINK) but once again the columns are missing in the generated script.I have to mention the master and work repositories are different databases from Oracle and ODI Agent is not installed because of some problems.
We are still beginners of ODI and would appreciate any help from more experienced guy (or other beginners).
Thank you in advance.
Just by chance, we found the soluton today!
The reason of missing generated code was that the description of the types of data was not entirely cofigured.
We found that the fields "create table syntax" and "'syntax of data accessible in writing' in each type of data in the topology definition were empty." After filling them, the generation of the script is running properly.
Before that we had problems with missing data types in models and we realized the reverse engineering of the types of data, but obviously it is insufficient.
Thanks to all those who participated in the discussion and tried to help us!
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Hello world
During playback of Oracle ADF Real World Developer's Guide, I noticed the dates match occurring in JDeveloper is different from what is the list in the book. JDeveloper is failing to oracle.jbo.domain.Date, but according to the book:
DATE java.sql.Date DATE type is mapped to java.sql.Date if the column in the table is a no time didn't need information zone. DATE java.sql.Timestamp DATE type is mapped to java.sql.Timestamp if the column in the table has a component "time" and that the client needs to zone information. TIMESTAMP java.sql.Timestamp The TIMESTAMP type is mapped to java.sql.Timestamp if nanosecond precision is used in the database. In general, is it better to use java.sql.Date and java.sql.Timestamp instead of oracle.jbo.domain.Date? Using java.sql.Date and java.sql.Timestamp could save me some headaches conversion date. And, is there a place in JDeveloper to display these maps? I looked around and didn't see anything.
Thank you.
James
User, what version of jdev we are talking about?
In GR 11, 1 material versions db types date and timestamp are mapped to types of domain data that represents a wrapper for the native data types. The reason was that the framework can work with the domain types regardless of the underlying data type.
Since Oracle 11 GR 2 maps the types DB to java types (default selection, you can change it when you create a model project, you can set the Data Type Mapping). Once the pilot has business components define you cannot change this setting it would break existing components such as eo or vo.
So if you are working wit 11 GR 1 subject, you must use the domain types, if you work with GR 11, 2 or 12 c, you can use the domain types, but it is recommended to use the java type mapping.
Timo
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Our team is planning to migrate from mysql to oracle. They provided a file in text format which produce using the mysqldump utility, and I can find the sql statement in this file. But I do not see file contain some raw data associated with characters of blob. Can I import data from text/number, but how can I import data blob in oracle using the sql statement or tool. Any idea
Use SQL * Developer.
Here is a nice HOWTO move data from MySQL to ORACLE.
MK
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How to migrate from MySQL to Oracle stored procedure
Hi all
I've migrated mysql 5.1.42 - enterprise-gpl-advanced DB for oracle sqldeveloper 3.1.07 tool.
DB objects migrate successfully except stored procedures.
I checked .sql and files... Capture process not captured SQL stored procedures.
Could you please suggest where I can check correct error or how to fix this.
Thanks in advance.
Hello
SQL * Developer version you use is an old and you must use the latest version available from this link.
However, even the v4 version does not support the migration of procedures stored as stated in this link - MySQL
http://www.Oracle.com/technetwork/developer-tools/SQL-Developer/supportedmigplatforms-086703.html
You will need to manually convert the MySQL in Oracle format, stored procedures since even the "Scratch Editor" under "tools - migration '-doesn't have an option for MySQL conversion.
The documentation includes details of the difference between MySQL and Oracle stored procedures-
Oracle SQL Developer information for the migration of MySQL®
in chapter Triggers and procedures stored
Kind regards
Mike
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Insert and update records to MySQL from Oracle
Hello
Our application will be insert/update new records in the Oracle database, but I need to insert/update new records in the MySQL database. Oracle and MySQL tables have the same columns.
Right now, we intend to create DBLink between Oracle and MySQL. The question is to know how to write code to insert/update new records to MySQL from Oracle. I'm a new guy in this area.
Please give us some examples of code, thanks!
With Oracle, you should be able to just write the same thing as usual, except for the include link database when you reference the table for example your SQL
insert into tablename@mysqldblink...
updating of the game tablename@mysqldblink...
Services gateway through the database link (odbc drivers or anything else that is used) must make the most of the necessary conversions for you.
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MY SQL-(5.1.61) version
Oracle (11.2.0.2.0 - 64 bit)
Must read a view in Oracle's MYSQL and flush the data in the table from Oracle scene.
Please provide the steps in detail.
Thank you.
Best regards
Franck GiriHello
You can use the database for ODBC (DG4ODBC) gateway to establish a connection to the MySQL database, and then use the copy, "create table as select... "or select / insert commands to move the data from MySQL in Oracle tables.
You will need access to My Oracle Support, but the following notes have details on setting up Dg4ODBC on variosu - platformsHow to set up DG4ODBC on x 86 32 bit Linux or HP - UX RISC (11.1 DG4ODBC only) to connect to databases Non-Oracle post installation (Doc ID 466228.1)
How to set up DG4ODBC on 64 bit OS Unix (Linux, Solaris, AIX, HP - UX Itanium) to connect to Oracle databases Post Install (Doc ID 561033.1)
How the installer DG4ODBC (gateway for ODBC Oracle database) on Windows 32 bits (Doc ID 466225.1)
How to set up DG4ODBC (gateway for ODBC Oracle database) on 64-bit Windows operating systems to connect to Oracle databases Post Install (Doc ID 1266572.1)Then this note contains information on the data - transfer
Copying data between Oracle database and non-Oracle foreign databases or data banks using gateways (Doc ID 171790.1)
You can also use GoldenGate which allows the replication of data between Oracle and non-Oracle databases in real-time.
Kind regards
Mike -
How to import the selected tables from MySQL to Oracle
Hello world:
How can I import tables from MySQL to Oracle? I have more than 180 tables in my DB (MySQL), but I copy only 12 of them to ORACLE... rigth now I do it manually, using SQL Developer (rigth clicking on the picture icon and copy to Oracle) but now I need to do this automatically every 4 hours...
I read on the dblink option, but I don't know if this is the best for this case...
I appreciate all help.
Best regards
JackHi Jack,
I think that with a db-link you can define an automated task (PL/SQL + programmer).
We use a db-link to Oracle's RDBMS to MySQL. So we have no experience.
We have created the db-link like http://www.pythian.com/news/1554/how-to-access-mysql-from-oracle-with-odbc-and-sql/Heike cordially
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MySQL to Oracle Migration offline: scripts incorrectly generated for tables
Hello
I used SQL Developer 3.0.4 to migrate Mysql to Oracle databases.
I have the following errors on the charger (oracle_ctl.sh) scripts to run:
SQL * Loader-2026: the charge was dropped because SQL Loader cannot continue.
SQL * Loader-500: could not open the file (data / framework_perdadepacotes_diari.txt)
The "framework_perdadepacotes_horario.txt" dump file is generated by mysqlsdump with the original mysql table name and ".txt" sufix:
-excerpt from unload_script.sh
mysqldump-u $username - p $server h $ t socket=/u01/mysqlmulti/mysql2/mysqld2.sock port password data = 3312 fields terminated by = "< EOFD >" fields escaped by = ""-lines terminated by = "< EORD >" "dxdb" "framework_perdadepacotes_horario" "
but sql loader controlfile makes reference to the file by using the new name of the oracle table (in this case, that the new name is truncated to 30 characters):
--
load data
INFILE ' data / framework_perdadepacotes_diari.txt ".
"str"< EORD >"
in the dxdb.framework_perdadepacotes_diari table
Another instance of the same problem, but in this case the table name starts wth "_":
-of unload_script.sh
mysqldump-h $server u $username - p$ password t data fields terminated by = "< EOFD >" fields escaped by = ""-lines terminated by = "< EORD >" "netdb" "_Clientes" "
file name generated by mysqldump: "_Clientes.txt."
CTL file:
load data
INFILE ' data / CLIENTES_1.txt ".
"str"< EORD >"
in the CLIENTES_1 table
Is this a bug, or are we supposed to manually fix the scripts for these cases?
Thank you
Edited by: user12099785 11/10/2011 06:11Currently, you have to fix manually because there was no bug recorded for this question. I have now filed the bug and it will be if all goes well fixed in one of the next versions to come.
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Migration - MySQL to Oracle - do not generate data files
Hello
I have been using the SQL Developer migration Assistant to move data from a MySQL 5 database to an Oracle 11 g server.
I used it successfully a couple of times and its has all worked.
However, I am currently having a problem whereby there is no offline data file generated. Control files and all other scripts generated don't... just no data file.
It worked before, so I'm a bit puzzled as to why no logner work.
I looked at newspapers of migration information and there is no errors shown - datamove is marked as success.
I tried deleting and recreating rhe repository migration and checked all grants and privs.
Is there an error message then it would be something to continue but have tried several times and checked everything I can think.
I also tried the approach of migration command-line... same thing. Everything works fine... no errors... but only the table creation and control script files are generated.
The schema of the source is very simple and there is only the tables to migrate... no procedure or anything else.
Can anyone suggest anything?
Thank you very much
MikeHi Mike,.
I'm so clear.
You use SQL Developer 3.0?
You walked through the migration wizard and choose Move Offline mode data.
The generation of DDL files are created as are the scripts to move data.
But no data (DAT) file is created and no data has been entered in the Oracle target tables.With offline data move, Developer SQL generates (saved in your project, under the DataMove dir directory) 2 sets of scripts.
(a) a set of scripts to unload data from MySQL to DAT files.
(b) a set of scripts to load data from the DAT files in the Oracle target tables.
These scripts must be run by hand, specifying the details for the source databases MySQL and Oracle target."no offline data file generated. Control files and all other scripts generated don't... just no data file. »
«.. . but only the creation and control file table scripts are generated. »What you mean
(1) the DAT files are not generated automatically. This should, if we need to run the scripts yourself
(2) after manually running the scripts that the DAT are not present, or that the DAT files are present, but the data does not load in Oracle tables.
(3) the scripts to move data in offline mode does not get generatedKind regards
Dermot
SQL development team. -
Conversion of a query GROUP_CONCAT of MySQL to Oracle
Hi all
We migrated our MySQL to Oracle database and we are facing the GROUP_CONCAT in MySQL built-in function.
I went through the WM CONCAT, COLLECT AND other built-in aggregates Oracle packages. Our problem is the following:
Table A (emp_number, emp_firstname, emp_lastname, Emp_status) and table B (emp_reporting_mode, emp_sub_mode, emp_sup_mode); Emp_sup_mode here is the employee
These tables are not related, and we have these data
Table A
emp_number emp_firstname emp_lastname Emp_status
5 BEN STA000 Raoul
Nadine 6 YAYA NULL
1 Hermann LONDJI STA001
STAT00 ONANA honors 14
Table B
emp_reporting_mode emp_sup_mode emp_sub_mode
1-6-1
1-14-5
The emp_sup_mode represents the emp_number and emp_sub_mode the emp_number subordinate supervisor. MySQl was able to use the GROUP_CONCAT to concatenate this.
as such and should exit the emp_firstname and the emp_lastname of the contractor where the supervisor code is equivalent to the number of the employee. Here, we can see Nadine YAYA (emp_number 6) is the prime contractor to Hermann LONDJI (emp_number 1) and Honoré ONANA (emp_number 14) is the architect of Raoul ESSOME (emp_number 5).
Thanks for any input. Other methods and rather global functions of similar id and cos.with a as ( select 5 emp_number,'Raoul' emp_firstname,'ESSOME' emp_lastname,'STA000' emp_status from dual union all select 6,'Nadine','YAYA',NULL from dual union all select 1,'Hermann','LONDJI','STA001' from dual union all select 14,'Honore','ONANA','STAT00' from dual ), b as ( select 1 emp_reporting_mode,6 emp_sup_mode,1 emp_sub_mode from dual union all select 1,14,5 from dual ) select a1.emp_number, a1.emp_firstname, a1.emp_lastname, a2.emp_firstname || ' ' || a2.emp_lastname supervisor from b, a a1, a a2 where a1.emp_number = b.emp_sub_mode(+) and a2.emp_number(+) = b.emp_sup_mode / EMP_NUMBER EMP_FIR EMP_LA SUPERVISOR ---------- ------- ------ -------------- 1 Hermann LONDJI Nadine YAYA 5 Raoul ESSOME Honore ONANA 14 Honore ONANA 6 Nadine YAYA SQL>SY.
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