Call dbms_stats.gather_database_stats_job_proc)

Similar Questions

• (dbms_stats.gather_database_stats_job_proc) necessary for AWR snapshots?

  Hello
  
  It is initially questions about my databases according to the topic SQL Tuning ADDM meanings.
  
  His stats are needed by AWR? If this is not the case, can I turn off the gathering of stats?
  
  Thank you
  
  (10.2.0.4)

  If you do a big load, statistics on table will be very different from the actual content, which may affect the plan / performance.
  You can manually collect the stats after a big load using dbms_stats, or you can wait just for regular work dbms_stats run and do the work for you.

• DBMS_STATS: What removed his stats?

  Hi all
  
  This is probably a stupid question, but I've searched high and low and have not found an adequate answer to the following: when deleted stats?
  
  I read that his stats table and index deleted whenever truncate you a table, but the (minimal) tests, I did confirm this. "Essays", I mean that I tried to truncate a table and then export and view the statistics of table via DBMS_STATS. EXPORT_TABLE_STATS (and I said 'minimum')... The table statistics seem to have been ignored next truncation.
  
  Table / index stats deleted when you truncate / drop / delete all records from a table? Or they not removed at all?

  Hello

  statistics on the table are deleted when you call dbms_stats.delete_table_stats or when you drop the table. Why you would think that Oracle would secretly remove its stats table behind your back unless you ask him to? If you have read somewhere you should post a link to that statement - we cannot judge him without the context, but these days there are a lot of stupid things posted on the internet, this could be one of them.

  You should trust what you see (your own tests) on what you hear, especially from unknown people on the internet.

  Best regards
  Nikolai

• DBMS_STATS and LAST_ANALYZED question

  Individuals:
  
  Oracle 11 GR 1 material (v 11.1.0.7)
  5.7 redhat
  Do not use partitioning
  
  
  Trying to force an update on the stats for some tables. Using DBMS_STATS I thought it would be easy, but for some reason, it turns out not to be the case.
  
  SQL > exec dbms_stats.gather_table_stats (ownname = > 'SCOTT', estimate_percent = > null, cascade = > true, tabname = > 'NEW_TABLE');
  
  SQL > select last_analyzed, stale_stats from dba_tab_statistics where owner = 'SCOTT' and table_name = 'NEW_TABLE ';
  
  LAST_ANAL STA
  --------- ---
  1 NOVEMBER 10 NO.
  
  I can call dbms_stats.delete_table_stats and the Last_analyzed and Stale_stats columns disappear... I think using dbms_stats.gather_table_stats would then fill in these columns, but they remain empty.
  
  SQL > exec dbms_stats.gather_table_stats (ownname = > 'SCOTT', estimate_percent = > null, cascade = > true, tabname = > 'NEW_TABLE');
  
  SQL > select last_analyzed, stale_stats from dba_tab_statistics where owner = 'SCOTT' and table_name = 'NEW_TABLE ';
  
  LAST_ANAL STA
  --------- ---
  {NULL} {NULL}
  
  
  The ONLY thing I found which filled columns after the publication of the delete_table_stats, is:
  
  SQL > analyze table SCOTT. New_table calculates statistics;
  
  SQL > select last_analyzed, stale_stats from dba_tab_statistics where owner = 'SCOTT' and table_name = 'NEW_TABLE ';
  
  LAST_ANAL STA
  --------- ---
  NO. 6 FEBRUARY 12
  
  
  
  As I know, this is contrary to the way in which my world Oracle should work... I thought DBMS_STATS was the new way to bring together his stats, but am now find this package does not seem to be working properly. Am I missing something?

  The indicator for the collection of statistics in a waiting area is persistent, so it does not matter if someone is logged in right now.

  In addition, you can check if the flag is set at the level system (not only for this table).

  Lordane Iotzov
  http://iiotzov.WordPress.com/

• Collect Stats Job Proc in 11.2.0.3

  Hello

  I would like to discuss this theme a little. What I don't know, is what works directly appeal dbms_stats.gather_database_stats_job_proc)

  It is originally at night on application performance issues, lost connections

  in dba_jobs is not, in dba_scheduler_jobs, it's false, in dba_scheduler_programs, that the program is activated and there is the call to dbms_stats.gather_database_stats_job_proc in program_action control_management_pack_access NONE so is the first line begin if prvt_advisor.is_pack_enabled('DIAGNOSTIC') then dbsnmp.bsln_internal.maintain_statistics; end; end; so will be ignored... autotask optimizer auto stats collection is enabled

  It is the vocation of autotask work * (_job_proc)? I don't know what else I need to check.

  Thank you

  I do not understand the problem: it starts because you activated. If you want the technical details, there is a fleeting background process (ABP0 if I remember correctly) that manages all of the active autotasks.

• extracting data from the CLOB using materialized views

  Hello

  We have xml data from clob which I have a requirement to extract (~ 50 attributes) on a daily basis, so we decided to use materialized views with refreshes full (open good suggestions)

  A small snippet of code

  CREATE THE MWMRPT MATERIALIZED VIEW. TASK_INBOUND

  IMMEDIATE CONSTRUCTION

  FULL REFRESH ON DEMAND

  WITH ROWID

  AS

  SELECT M.TASK_ID, M.BO_STATUS_CD, b.*

  OF CISADM. M1_TASK m,

  XMLTABLE (' / a ' XMLPARSE PASSING ())

  CONTENT '< a > | M.BO_DATA_AREA | "< /a >."

  ) COLUMNS

  serviceDeliverySiteId varchar2 (15) PATH

  "cmPCGeneralInfo/serviceDeliverySiteId"

  serviceSequenceId varchar2 (3) PATH "cmPCGeneralInfo/serviceSequenceId"

  completedByAssignmentId varchar2 (50) PATH "completedByAssignmentId."

  Cust_id varchar2 (10) PATH "cmPCCustomerInformation/customerId,"

  ACCT_SEQ varchar2 (5) PATH "customerInformation/accountId"

  AGRMT_SEQ varchar2 (5) PATH cmPCCustomerAgreement/agreementId"."

  COLL_SEQ varchar2 (5) PATH "cmPCGeneralInfo/accountCollectionSeq"

  REVENUE_CLASS varchar2 (10) PATH "cmPCCustomerAgreement/revenueClassCode"

  REQUESTED_BY varchar2 (50) PATH ' attributes customerInformation/contactName',...~50

  This ddl ran > 20 hours and no materialized view created. There are certain limits that we have

  • Cannot create a materialized view log
  • cannot change the source as its defined provider table
  • cannot do an ETL

  DB is 11g R2

  Any ideas/suggestions are very much appreciated

  I explored a similar approach, using the following test case.

  It creates a table "MASTER_TABLE" containing 20,000 lines and a CLOB containing an XML fragment like this:

  09HOLVUF3T6VX5QUN8UBV9BRW3FHRB9JFO4TSV79R6J87QWVGN

  UUL47WDW6C63YIIBOP1X4FEEJ2Z7NCR9BDFHGSLA5YZ5SAH8Y8

  O1BU1EXLBU945HQLLFB3LUO03XPWMHBN8Y7SO8YRCQXRSWKKL4

  ...

  1HT88050QIGOPGUHGS9RKK54YP7W6OOI6NXVM107GM47R5LUNC

  9FJ1JZ615EOUIX6EKBIVOWFDYCPQZM2HBQQ8HDP3ABVJ5N1OJA

  then an intermediate table "MASTER_TABLE_XML" with the same columns with the exception of the CLOB which turns into XMLType and finally a MVIEW:

  SQL > create table master_table like

  2. Select level as id

  3, cast ('ROW' | to_char (Level) as varchar2 (30)) as the name

  4       , (

  5. Select xmlserialize (content

  XMLAGG 6)

  7 xmlelement (evalname ('ThisIsElement' | to_char (Level)), dbms_random.string ('X', 50))

  8                    )

  9 as clob dash

  10                  )

  11 double

  12 connect by level<=>

  (13) as xmlcontent

  14 double

  15 connect by level<= 20000="">

  Table created.

  SQL > call dbms_stats.gather_table_stats (user, 'MASTER_TABLE');

  Calls made.

  SQL > create table (master_table_xml)

  Identification number 2

  3, name varchar2 (30)

  4, xmlcontent xmltype

  5)

  binary xmltype 6 securefile XML column xmlcontent store

  7;

  Table created.

  SQL > create materialized view master_table_mv

  2 build postponed

  full 3 Refresh on demand

  4, as

  5. Select t.id

  6, t.nom

  7       , x.*

  master_table_xml 8 t

  9, xmltable ('/ r' in passing t.xmlcontent)

  10 columns

  11 path of varchar2 (50) ThisIsElement1 'ThisIsElement1 '.

  12, path of varchar2 (50) ThisIsElement2 'ThisIsElement2 '.

  13, path of varchar2 (50) ThisIsElement3 'ThisIsElement3 '.

  14, path of varchar2 (50) ThisIsElement4 'ThisIsElement4 '.

  15 road of varchar2 (50) ThisIsElement5 'ThisIsElement5 '.

  16, road of varchar2 (50) ThisIsElement6 'ThisIsElement6 '.

  17 road of varchar2 (50) ThisIsElement7 'ThisIsElement7 '.

  18 road of varchar2 (50) ThisIsElement8 'ThisIsElement8 '.

  19 road to varchar2 (50) ThisIsElement9 'ThisIsElement9 '.

  20, path of varchar2 (50) ThisIsElement10 'ThisIsElement10 '.

  21, road to varchar2 (50) ThisIsElement11 'ThisIsElement11 '.

  22 road of varchar2 (50) ThisIsElement12 'ThisIsElement12 '.

  23 road of varchar2 (50) ThisIsElement13 'ThisIsElement13 '.

  24, path of varchar2 (50) ThisIsElement14 'ThisIsElement14 '.

  25 road of varchar2 (50) ThisIsElement15 'ThisIsElement15 '.

  26, path of varchar2 (50) ThisIsElement16 'ThisIsElement16 '.

  27, way to varchar2 (50) ThisIsElement17 'ThisIsElement17 '.

  28 road of varchar2 (50) ThisIsElement18 'ThisIsElement18 '.

  29 road of varchar2 (50) ThisIsElement19 'ThisIsElement19 '.

  30, path of varchar2 (50) ThisIsElement20 'ThisIsElement20 '.

  31, path of varchar2 (50) ThisIsElement21 'ThisIsElement21 '.

  32 road of varchar2 (50) ThisIsElement22 'ThisIsElement22 '.

  33, path of varchar2 (50) ThisIsElement23 'ThisIsElement23 '.

  34 road of varchar2 (50) ThisIsElement24 'ThisIsElement24 '.

  35 road of varchar2 (50) ThisIsElement25 'ThisIsElement25 '.

  36, road to varchar2 (50) ThisIsElement26 'ThisIsElement26 '.

  37, path of varchar2 (50) ThisIsElement27 'ThisIsElement27 '.

  38, path of varchar2 (50) ThisIsElement28 'ThisIsElement28 '.

  39, path of varchar2 (50) ThisIsElement29 'ThisIsElement29 '.

  40, road of varchar2 (50) ThisIsElement30 'ThisIsElement30 '.

  41 road of varchar2 (50) ThisIsElement31 'ThisIsElement31 '.

  42, path of varchar2 (50) ThisIsElement32 'ThisIsElement32 '.

  43, road to varchar2 (50) ThisIsElement33 'ThisIsElement33 '.

  44, path of varchar2 (50) ThisIsElement34 'ThisIsElement34 '.

  45, path of varchar2 (50) ThisIsElement35 'ThisIsElement35 '.

  46, path of varchar2 (50) ThisIsElement36 'ThisIsElement36 '.

  47, path of varchar2 (50) ThisIsElement37 'ThisIsElement37 '.

  48, path of varchar2 (50) ThisIsElement38 'ThisIsElement38 '.

  49, path of varchar2 (50) ThisIsElement39 'ThisIsElement39 '.

  50 road of varchar2 (50) ThisIsElement40 'ThisIsElement40 '.

  51, path of varchar2 (50) ThisIsElement41 'ThisIsElement41 '.

  52, path of varchar2 (50) ThisIsElement42 'ThisIsElement42 '.

  53, path of varchar2 (50) ThisIsElement43 'ThisIsElement43 '.

  54, path of varchar2 (50) ThisIsElement44 'ThisIsElement44 '.

  55 road of varchar2 (50) ThisIsElement45 'ThisIsElement45 '.

  56, path of varchar2 (50) ThisIsElement46 'ThisIsElement46 '.

  57, path of varchar2 (50) ThisIsElement47 'ThisIsElement47 '.

  58 road of varchar2 (50) ThisIsElement48 'ThisIsElement48 '.

  59 road of varchar2 (50) ThisIsElement49 'ThisIsElement49 '.

  60 road of varchar2 (50) ThisIsElement50 'ThisIsElement50 '.

  (61) x;

  Materialized view created.

  The discount is then performed in two steps:

  1. INSERT INTO master_table_xml
  2. Refresh the MVIEW

  (Note: as we insert in an XMLType column, we need an XML (only root) document this time)

  SQL > set timing on

  SQL >

  SQL > truncate table master_table_xml;

  Table truncated.

  Elapsed time: 00:00:00.27

  SQL >

  SQL > insert into master_table_xml

  2. select id

  3, name

  4, xmlparse (document '' |) XmlContent |'')

  5 master_table;

  20000 rows created.

  Elapsed time: 00:04:38.72

  SQL >

  SQL > call dbms_mview.refresh ('MASTER_TABLE_MV');

  Calls made.

  Elapsed time: 00:00:22.42

  SQL >

  SQL > select count (*) in the master_table_mv;

  COUNT (*)

  ----------

  20000

  Elapsed time: 00:00:01.38

  SQL > truncate table master_table_xml;

  Table truncated.

  Elapsed time: 00:00:00.41

• subqueries in the select list

  Why is using subqueries in the list of SELECTION so slow? Oracle would not optimize by changing the hash-join-semi. Is there a rule for this? Is there any list of optimizations that seem simple but Oracle is unable to carry them out? My version of Oracle's 11g Enterprise Edition Release 11.2.0.1.0

  Here is an example:

  test the table, select the level of the double connect by level to create < = 1000 * 1000;

  Call dbms_stats.gather_table_stats (user, 'TEST');

  Quick version - find duplicates of I -.

  Select * from test t1 where exists (select 1 test t2 where t2.i = t1.rowid <>t1.i and t2.rowid); --0 s

  -other methods are slow because for each record of the table overall TEST TEST is analyzed:

  Select * from (select case when exists (select 1 test t2 where t2.i = t1.rowid <>t1.i and t2.rowid) then end 'identifier' err test t1) where err is not null;

  Select * from (select case when exists (select 1 test t2 where t2.i = t1.rowid <>t1.i and t2.rowid) then end 'identifier' err test t1) where err is not null;

  select max (case when exists (select 1 ))

  test t2

  where t2.i = t1.i and

  T2. ROWID <>t1.rowid) then

  'ID '.

  end) err

  test t1;

  select max (case when t1.rowid not in (select min (t2.rowid) ))

  test t2

  Group by i) then

  'ID '.

  end) err

  test t1

  Here is an explanation:

  Ask Tom & quot; disadvantages of queries with many & quot; Select... & quot;

• enabled automatic optimizer stats collection, but is not running and not appearing not

  enabled automatic optimizer stats collection, but is not running and not appearing not
  
  I've activated automatic optimizer stats collection days ago, but it never worked. DB version is 11 GR 2, OS redhat 5. It shows active in dba_autotask_client, but not in autotask_task. Please help on this issue.
  
  SQL > select client_name, State of dba_autotask_client;
  
  CLIENT_NAME STATUS
  --------
  ACTIVE automatic optimizer stats collection
  advise OFF auto space
  SQL tuning advisor ENABLED
  
  SQL > select TaskName, status, to_char (last_good_date, ' ' YYYY-MM-DD HH24:MI:SS) last_good_date, last_good_duration
  of dba_autotask_task
  where client_name = "auto optimizer stats collection"; 2 3
  
  no selected line
  
  SQL > select program_action, number_of_arguments, active
  of dba_scheduler_programs
  where owner = 'SYS '.
  and program_name = 'GATHER_STATS_PROG '; 2 3 4
  
  PROGRAM_ACTION NUMBER_OF_ARGUMENTS ENABL
  
  DBMS_STATS.gather_database_stats_job_proc 0 TRUE
  
  SQL > select w.window_name, c.autotask_status, c.optimizer_stats, w.repeat_interval, w.enabled
  -, w.duration, w.last_start_date, w.next_start_date
  dba_autotask_window_clients 2 c, dba_scheduler_windows w
  3 where 4 c.window_name = w.window_name
  5 order by last_start_date desc;
  
  WINDOW_NAME AUTOTASK OPTIMIZE ITS REPEAT_INTERVAL
  
  MONDAY_WINDOW ON ON freq = all days; byday = MY. byhour = 22; byminute = 0; BYSECOND = 0 TRUE
  SUNDAY_WINDOW ON ON freq = all days; byday = Sun; byhour = 6; byminute = 0; BYSECOND = 0 TRUE
  SATURDAY_WINDOW ON ON freq = all days; byday = SAT; byhour = 6; byminute = 0; BYSECOND = 0 TRUE
  FRIDAY_WINDOW ON ON freq = all days; byday = FRI; byhour = 22; byminute = 0; BYSECOND = 0 TRUE
  THURSDAY_WINDOW ON ON freq = all days; byday = THU; byhour = 22; byminute = 0; BYSECOND = 0 TRUE
  WEDNESDAY_WINDOW ON ON freq = all days; byday = SEA; byhour = 22; byminute = 0; BYSECOND = 0 TRUE
  TUESDAY_WINDOW ON ON freq = all days; byday = KILL; byhour = 22; byminute = 0; BYSECOND = 0 TRUE
  
  7 selected lines.
  
  SQL >

  Select max (last_analyzed) from all_tables;

  display SQL results above

• Job GATHER_STATS collect statistics for the tables 'static '.

  Oracle version: 10 gr 2
  
  If a corporate table has not changed (No. DML) in the last 10 days, will be the collection of default oracle job stats

  DBMS_STATS.GATHER_DATABASE_STATS_JOB_PROC

  yet collect statistics in this table?

  The answer is no, unless you have changed the default optimizer stats collection of statistics because approximately 10% of the data must have undergone change before that table is elgible for new statistics.

  See the next topic in the Performance and Tuning section 14.2.1 GATHER_STATS_JOB Manual:

  http://download.Oracle.com/docs/CD/B19306_01/server.102/b14211/stats.htm#sthref1068

  HTH - Mark D Powell.

• SQL * more missing parenthesis

  Hi, experts,
  
  I use sqlplus to run this command.
  
  
  CALL dbms_stats.gather_table_stats (ownname = > 'XXXX', tabname = > 'XXX_TBL', estimate_percent = > dbms_stats.auto_sample_size, cascade = > TRUE, level = > dbms_stats.default_degree, method_opt = > 'FOR ALL COLUMNS SIZE SKEWONLY')
  
  sql * more version is 9.2.0.1.0
  the database version is 9.2.0.7.0
  
  My syntax is correct?
  but he returns this error.
  
  
  
  ERROR on line 1:
  ORA-00907: lack of right parenthesis
  
  
  unauthorized in sql syntax * more?

  Hello

  That works fine for me (in 10.1.0.2.0, Oracle with SQL * Plus 10.1.0.2.0).

  Is the command on one line? Make sure that it is.

  Is the command that you have posted to the SQL > invite, or part of a PL/SQL code? (Don't say CALL within PL/SQL).

  Can you call the procedure with fewer arguments, say, just the owner and table name? If so, add that the other arguments to return, as a result of the time. What argument leads to failure?

• Inaccurate statistics calculated by the task of automatic statistics collection

  Hello
  
  I have a table with about 300,000 sets and I manually collected statistics for the table and its index with the command: "EXEC DBMS_STATS.gather_table_stats ('SCOTT', 'Table_test');" Both indices of the table statistics were accurate and the execution of SQL statements were also very powerful. Then, during the night Enterprise Manager recalculated statistics again, but the results were far from exact:
  
  OWNER: SCOTT
  INDEX_NAME: I_TEST_INDEX
  INDEX_TYPE: NORMAL
  TABLE_OWNER: SCOTT
  TABLE_NAME: TEST_TABLE
  TABLE_TYPE: TABLE
  UNIQUENESS: UNIQUE
  COMPRESSION: DISABLED
  PREFIX_LENGTH:
  NOM_TABLESPACE: USERS
  INI_TRANS: 2
  MAX_TRANS: 255
  INITIAL_EXTENT: 65536
  NEXT_EXTENT:
  MIN_EXTENTS: 1
  MAX_EXTENTS: 2147483645
  PCT_INCREASE:
  PCT_THRESHOLD:
  INCLUDE_COLUMN:
  FREELISTS:
  FREELIST_GROUPS:
  PCT_FREE: 10
  LOGGING: YES
  BLEVEL: 2
  LEAF_BLOCKS: 16
  DISTINCT_KEYS: 141
  AVG_LEAF_BLOCKS_PER_KEY: 1
  AVG_DATA_BLOCKS_PER_KEY: 1
  CLUSTERING_FACTOR: 19
  STATUS: VALID
  NUM_ROWS: 141
  SAMPLE_SIZE: 141
  LAST_ANALYZED: November 4, 2008 22:03
  DEGREE: 1
  INSTANCES: 1
  PARTITIONED: NO.
  TEMPORARY: N
  GENERATED: N
  SCHOOL: N
  USER_TABLES: DEFAULT
  USER_STATS: NO.
  DURATION:
  PCT_DIRECT_ACCESS: 100
  ITYP_OWNER:
  ITYP_NAME:
  PARAMETERS:
  GLOBAL_STATS: YES
  DOMIDX_STATUS:
  DOMIDX_OPSTATUS:
  FUNCIDX_STATUS:
  JOIN_INDEX: NO.
  IOT_REDUNDANT_PKEY_ELIM: NO.
  ELIMINATED: NO.
  
  
  The new statistics report that there are only 141 separate in the table key although there are actually 300 000. The result is that SQL statements executing degrades considerably. Does anyone know why the statistics have become so inaccurate? I'm on 10.2.0.1.0.
  
  Kind regards
  Swear

  user633661 wrote:
  The only thing I'm not sure of is if I should include the statistics calculation step in the batch (this is a PL/SQL procedure) - I mean, it's a mixture of normal practices code that calculates statistics with business logic code?

  Swear,

  I think Justin has responded to this already pretty well, it is quite common in environments of warehouses of data or any other leads batch environments. You must be precise (or let's say representative) statistics if you want the CBO to do a good job.

  BTW, do you know if the collection of statistics on an Index organized table is somewhat different that gather on heap-organized tables?

  No, there is no difference. DBMS_STATS (and even surprisingly ANALYZE) know IOT and collect 'table', column and potential segments of infinity and the (mandatory) primary key index (representing the IOT) even if you do not specify a "cascade-online true" in the call DBMS_STATS.

  Kind regards
  Randolf

  Oracle related blog stuff:
  http://Oracle-Randolf.blogspot.com/

  SQLTools ++ for Oracle (Open source Oracle GUI for Windows):
  http://www.sqltools-plusplus.org:7676 /.
  http://sourceforge.NET/projects/SQLT-pp/

• Run DBMS_STATS. SET_TABLE_STATS in the package

  Hello

  I tried to put the table of statistics through DBMS_STATS. SET_TABLE_STATS for the table, I'm not owner.

  When I use the command SQL * Plus, it works fine.

  When I use the same command in the package, I got an error:

  ERROR on line 1:

  ORA-20000: TABLE 'XXX '. "' YYYYY ' does not exist or insufficient privileges

  ORA-06512: at "SYS." DBMS_STATS", line 4455

  ORA-06512: at "SYS." DBMS_STATS", line 10128

  ORA-06512: at "TKPA. KOPA_ORP_RELACIJE', line 13

  ORA-06512: at line 2

  User a role DBA and ALTER, DELETE, INDEX, INSERT and SELECT, UPDATE, REFERENCES, ON COMMIT REFRESH, QUERY REWRITE, DEBUG, FLASHBACK on table.

  Y at - it an idea?

  Thank you and best regards.

  Maybe

  Read memos to use SET_TABLE_STATS in http://docs.oracle.com/cd/E11882_01/appdev.112/e40758/d_stats.htm#ARPLS059

  To call this procedure, you must be the table owner, or you need the ANALYZE ANY privilege. For the objects belonged to SYS , you must be the owner of the table, or you must ANALYZE ANY DICTIONARY privilege or the SYSDBA privilege.

  Concerning

  Etbin

  http://docs.Oracle.com/CD/E11882_01/AppDev.112/e25519/subprograms.htm#LNPLS00809 can be useful also

• Execute "dbms_stats.gather_table_stats in the start = &gt; run until the peak hours = &gt; pause = &gt; restart from where he was arrested after the rush hour" mode.

  Guys,

  Please let know us if it is possible to run dbms_stats.gather_table_stats in "start = > Execute until off-peak hours = > take a break during peak times = > restart from where he was arrested after the rush hour" mode.

  I partitioned table with mammoth number of records requiring full table statistics collection once all 3 months. Stats gathering is so expensive that it takes almost 2 days to complete.  Our goal is to ensure that no SQL that runs during peak hours (15:00 to 22:00 hours) is affected by the collection of statistics. That's why we would like the stats collection to run above mode.

  Ideas, suggestions would be very appreciated and I will receive with the profound esteem.

  -Bugs

  Like others, I wonder why full stats are required.

  You nightly stats together people with reduced mobility?

  Check dba_tab_modifications for the changes made to the table, your stats every night, whether its stats are needed comes from there so if a partition has no 10% change, why you re - collect his stats for her?  There are a few other things going on behind the scenes, but close enough.  Even if you set additional stats there and kick that off, he'll simply choose the following who did not, risking several work trying to do the same thing

  theres probably 10 different ways to act how you're good with plql but generate your work statistics with something like that, then open multiple windows of sqlplus and divide it into sections while you are in the collection of statistics on several pieces at the same time.    Failure could write some autonomous plsql proc that analyzes a partition that went in there and call that any amount of time passing in the partition in a loop, but you get the idea of gathering statistics on more than one partition at the same time.

  Change the value of table_owner and table_name

  exec DBMS_STATS. FLUSH_DATABASE_MONITORING_INFO;

  Select the command from

  (select (nvl(a.updates,0) + nvl(a.inserts,0) + nvl(a.deletes,0)) * 100)

  / nvl(b.num_rows,1) as change.

  "exec DBMS_STATS. GATHER_TABLE_STATS (' |) '''' || "TABLE_OWNER" | '''' || ',' || '''' || 'TABLE_NAME ' | '''' || ', granularity =>' | '''' || 'PARTITION | ''''||  ', PARTNAME =>' | '''' ||  a.PARTITION_NAME | '''' || ', ESTIMATE_PERCENT => DBMS_STATS. AUTO_SAMPLE_SIZE, METHOD_OPT => ' | '''' || 'FOR ALL COLUMNS SIZE AUTO ' | '''' || ')' as a command

  of dba_tab_modifications a, b dba_tab_partitions

  where a.table_name as "TABLE PARTITIONNEE YOUR BIG".

  and a.table_name = b.table_name

  and a.partition_name = b.partition_name

  and nvl(a.updates,0) + nvl(a.inserts,0) + nvl(a.deletes,0) > 0

  )

  where to change > = 10

• Call the DBMS package via the link of database

  IM changes on tables using dba_tab_modifications, number of databases, 1 metric scheme in 1 case.  to get the latest changes, I have to empty the changes which means I have to exec dbms_stats package remotely.  I can do by creating a proc and calling the proc over a database link.

  Remote

  create or replace procedure flush_db_info

  Start

  DBMS_STATS. FLUSH_DATABASE_MONITORING_INFO;

  end;

  local

  create synonym remote_flush for flush_db_info@remote

  exec remote_flush;

  Is there anyway that I can run the DBMS_STATS. FLUSH_DATABASE_MONITORING_INFO@remote on the local to run on the remote control, without creating the proc/synonym?

  This is no biggy, I got it working like this, I just want to see is possible

  Have you tried?

• DBMS_STATS. SET_TABLE_PREFS does not work as expected

  Hello!
  
  I have a rather strange behavior of the DBMS_STATS. SET__PREFS proceduree.
  
  I want to realize that statistics on the table are collected with degrre = 4 in parallel, and I want to achieve this by defining the table preferences and not explicitly mention the degree in the call to the collection of statistics on the table.
  
  That's what I did:
  
  -first of all check the global preferences:
  
  Select dbms_stats.get_prefs ('DEGREE', 'GLOBAL') of double;
  ======================================
  NULL VALUE
  
  Then get the table preferences:
  
  Select
  DBMS_STATS.get_prefs ("DEGREE", "DARL', 'EIGNUNGSEINZELERGEBNISSE'")
  Double;
  ================================================
  NULL VALUE
  
  Then I try to define the DEGREE of 4:
  
  Start
  DBMS_STATS.set_table_prefs ('DARL', 'EIGNUNGSEINZELERGEBNISSE', 'LEVEL', '4');
  end;
  
  and after that I question the preferences:
  
  Select
  DBMS_STATS.get_prefs ("DEGREE", "DARL', 'EIGNUNGSEINZELERGEBNISSE'")
  Double;
  ====================================================
  4
  
  But when I run
  
  Start
  DBMS_STATS.gather_table_stats ('DARL', 'EIGNUNGSEINZELERGEBNISSE');
  end;
  
  Statistics is not picked up at the same time...
  
  I just need to explicitly mention degree - and it runs in parallel:
  
  Start
  DBMS_STATS.gather_table_stats ('DARL', 'EIGNUNGSEINZELERGEBNISSE' = > '4');
  end;
  
  
  Now - I checked just the prosesses each order product... in the last example you could clearly see the process parallels 4 th.
  
  To be honest, I didn't ' t now in what display catalog could I look up if the statistics resulting, collecting the operation takes place in parallel or not.
  
  
  And the table is partitioned and 5.4 G... It takes time to collect statistics, with all the other settings as they are.
  
  What is happening here... I forgot something. Is there another setting that should be set for the preferences to function properly?
  
  Database version is 11.2
  
  Published by: Robert on November 26, 2012 14:25
  
  Published by: Robert on November 27, 2012 08:18

  I just checked and got the same result in the 11.2 database.

  At first, I noticed the following in the description of the procedure:

  ... DBMS_STATS can use serial execution if the size of the object does not guarantee parallel execution.

  I checked on the tables of 4G and 250G with the same result.

  The second thing I noticed was how default degree is calculated in the procedure:

  ...
    degree           NUMBER   DEFAULT to_degree_type(get_param('DEGREE')),
  ...
  

  Please note the use of DBMS_STATS currently obsolete. GET_PARAM procedure which is replaced by GET_PREFS. The first steps pick up preferences defined at the table level. If you set the global preferences using DBMS_STATS. SET_GLOBAL_PREFS it would be used as the default value (I checked).

  Cause depending on your situation you may find this unacceptable solution. I have this case you always explicitly specify the degree as you did before.

  Looks like a bug to me, but cause I have no confirmation of that yet.

  It will be useful.