Collect statistics of the table in windows

Similar Questions

• How to collect statistics on the table for tables in a different schema

  Hi all
  
  I have a table in a schema, and I want to collect statistics for the table in a different schema.
  
  I gave GRANT ALL ON SCHEMA1. T1 TO SCHEMA2;
  
  And when I tried to run the command to collect statistics to help
  
  DBMS_STATS. GATHER_TABLE_STATS (OWNNAME = > 'SCHMEA1', TABNAME = > 'T1');
  
  The function will fail.
  
  Is there a way we can collect statistics of the table for tables in a schema into another schema.
  
  Thank you
  MK.

  You must grant analyze to schema2.

  SY.

• 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.

• collect statistics of the table

  Hi all
  
  DB version: 10.2.0.4
  OS: AIX 6.1
  
  I want to collect the stats table for a table as the query that uses that table is slow. Also, I noticed that this table is using full table scan, and it has been analyzed in last 2 months back.
  
  I intend to run the query to collect the statistics below. The table has 50 million records.
  COUNT (*)
  ----------
  51364617
  
  I expect that this will take time if I run the query as below.
  
  
  DBMS_STATS.gather_table_stats EXEC ('schema_name', 'table_name');
  
  My doubts specified below.
  
  1. can I use the also estimate_percent parameter to collect statistics?
  
  2 should. how much we indicate for the estimate_percent parameter?
  
  3. what difference it will make if I use the estimate_percent parameter?
  
  Thanks in advance
  
  Published by: user13364377 on March 27, 2012 13:28

  If you are worried about the stats of collection process for a long time running, consider collecting statistics in parallel.

  1. can you use estimate_percent? Sure! Go ahead.
  2. what percentage of use? Why not let the data decide with auto_sample_size? Various "rules of thumb" were thrown around over the years, usually about 10 to 20%.
  3. what difference it will make? Very little, no doubt. Occasionally, you can see where a small sample makes a difference, but in general that it's perfectly ok to estimate its stats.

  Maybe something like this:

  BEGIN
    dbms_stats.gather_table_stats(ownname => user, tabname => 'MY_TABLE',
     estimate_percent => dbms_stats.auto_sample_size, method_opt=>'for all columns size auto',
     cascade=>true,degree=>8);
  END;
  

• Collect statistics on the table with indexes of text only?

  I gathered statistics for a table that contains a text index
  EXEC DBMS_STATS. GATHER_TABLE_STATS (USER, 'CONADDR', estimate_percent = > 10, block_sample = > TRUE, cascade = > TRUE);
  
  There are a lot of tables/indexes not monitored (e.g. DR$ TI_CONADDR$ I). Do I have to analyse the tables there, too? The Guide Tuning Oracle text mentions just to analyze the table of "base".
  
  Oracle DB version is 10.2.0.4.
  

  select table_name, last_analyzed, num_rows from dba_tables where table_name like '%CONADDR%';
  CONADDR     11.08.2010 10:29:37     17944660
  DR$TI_CONADDR$I          
  DR$TI_CONADDR$R          
  DR$TI_CONADDR$K          
  DR$TI_CONADDR$N          
  
  select index_name, table_name, last_analyzed, num_rows from dba_indexes where table_name like '%CONADDR%';
  SYS_IL0003730268C00004$$     CONADDR          
  IDX_CONADDR                     CONADDR     11.08.2010 10:29:46     17106050
  SYS_IL0003731165C00006$$     DR$TI_CONADDR$I          
  SYS_IOT_TOP_3731168             DR$TI_CONADDR$K          
  SYS_IL0003731170C00002$$     DR$TI_CONADDR$R          
  SYS_IOT_TOP_3731173             DR$TI_CONADDR$N          
  DR$TI_CONADDR$X                     DR$TI_CONADDR$I     11.08.2010 10:05:05     67585029
  TI_CONADDR                     CONADDR     11.08.2010 10:29:46     

  DR$ table do NOT need to be analysed - and should not be.

  As "secondary objects", they will not be analyzed by orders based on patterns, and it is strongly recommended to not analyze manually. All commands that access these tables are set correctly without the input of the optimizer.

• collect statistics for the tablespace

  Friends...

  OS: Linux

  DB: 11 GR 2

  Data size: 1 TB

  I spend monthly multiple partitioned table spaces and bring together in a single annual partition. (for example tbs_2014_01, tbs_2014_02 - tbs_2014_12... all combine them into tbs_2014 as a tablespace)

  Over the weekend, work of database gets executed that collects statistics that are obsolete, it collects all the segments that have been moved from the storage.

  Given that the collection of statistics at the end of the week takes too long, I tried to find a smart way to collect statistics after each tablespace move rather than waiting for job to weekend which will take two or three days to complete.

  1. is there a way to gather statistics at the tablespace level and collect statistics for all objects in this table space?

  2. how to determine the overall stats of collection of statistics part?

  That is, suppose I have move the tbs_2014_01 tablespace and collect statistics with global stats that could take 2 hours but it will be difficult to spend 2 hours for each stats global tablespace which in my opinion is not good and we should be collecting global stats only once.

  3. any other advice?

  977272 wrote:

  @sol.beach... Thanks for your comments...

  I've not been asked to collect statistics to the tablespace but level to collect statistics after that finish objects move in storage.

  Given the size of the data, it is difficult to gather all the statistics at the weekend so trying to understand another method to collect the statistics the weekend load will be less.

  You can collect statistics object on an object by object basis level after that each object has been moved.

• What is advised to collect statistics for the huge tables?

  We have a staging database, some tables are huge, hundreds GB in size.  Auto stats tasks are performed, but sometimes it will miss deadlines.

  We would like to know the best practices or tips.

  Thank you.

  Improvement of the efficiency of the collection of statistics can be achieved with:

  1. Parallelism using
  2. Additional statistics

  Parallelism using

  Parallelism can be used in many ways for the collection of statistics

  1. Parallelism object intra
  2. Internal parallelism of the object
  3. Inner and Intra object jointly parallelism

  Parallelism object intra

  The DBMS_STATS package contains the DEGREE parameter. This setting controls the intra parallelism, it controls the number of parallel processes to gather statistics. By default, this parameter has the value is equal to 1. You can increase it by using the DBMS_STATS.SET_PARAM procedure. If you do not set this number, you can allow oracle to determine the optimal number of parallel processes that will be used to collect the statistics. It can be achieved if you set the DEGREE with the DBMS_STATS. Value AUTO_DEGREE.

  Internal parallelism of the object

  If you have the 11.2.0.2 version of Oracle database you can set SIMULTANEOUS preferences that are responsible for the collection of statistics, preferably. When there is TRUE value at the same TIME, Oracle uses the Scheduler and Advanced Queuing to simultaneously manage several jobs statistics. The number of parallel jobs is controlled by the JOB_QUEUE_PROCESSES parameter. This parameter must be equal to two times a number of your processor cores (if you have two CPU with 8 cores of each, then the JOB_QUEUE_PROCESSES parameter must be equal to 2 (CPU) x 8 (cores) x 2 = 32). You must set this parameter at the level of the system (ALTER SYSTEM SET...).

  Additional statistics

  This best option corresponds to a partitioned table. If the INCREMENTAL for a partitioned table parameter is set to TRUE and the DBMS_STATS. GATHER_TABLE_STATS GRANULARITY setting is set to GLOBAL and the parameter of DBMS_STATS ESTIMATE_PERCENT. GATHER_TABLE_STATS is set to AUTO_SAMPLE_SIZE, Oracle will scan only the partitions that have changes.

  For more information, read this document and DBMS_STATS

• Collect statistics for a Table

  Hello
  
  I have a tabel 'XXX' need to collect statistics. Please tell me how can we collect and where it will store.
  
  
  
  Regs,
  Brij

  Please run this to collect statistics.

  exec DBMS_STATS.GATHER_TABLE_STATS ('', '');
  

• SD3.0 EA3: ER model - Classification Type in the Table Properties window

  Hello
  
  In my ER model, for some tables in my model, I am not able to use the Type of Classification. When I select a classification type and click on the button apply the fist type classification letter appears on the header of the table. But the format of classification does not apply. For example, I created a new type of classification 'Story' and given a red background color. When I apply this type of ranking on a table the letter "H" appears on the header color but background of red table has not been applied. Table is always to have default yellow background.
  This behavior is identical, even if I select a Classification type predefined as fact or Dimension etc... And this behavior is for a few tables only. For other paintings his worksheet.
  I'm not able to identify any particular difference between these tables.
  
  Please help me.
  
  
  Thank you
  Rahul
  
  Published by: user10986679 on January 24, 2011 12:04

  Rahul,

  can you check the settings for 'format' for tables without own colouring - it's "Format" in the menu of items on the diagram - 'Use the default color' should be selected. If it is not selected, then using the specific defined on the object and color associated with type of ranking is not applied.
  Select all objects (can use CTRl-A) and "format" dialog box allows to define the use of the default color.

  Philippe

• update statistics on the tables

  I can see exec dbms_stats.gather_schema_stats is activated and running every day night. little tables is not analyzed (1250 tables for example) bore of tables (about 20,000) analyzed every day.
  
  Why little tables is not analyzed

  Objects are analyzed by this feature only when there is no statistics or when there are obsolete statistics (i.e. when more than 10% of the lines has been changed).
  It happens every day at night between 22:00 to 06:00 and all day weekends.

  In case you according to objects that are updated regularly and traverse the above criteria will be gathered statistics with work. rest may not have satisfied the above criteria.

  Hope this helps you.

  Anil Malkai

• Collection of statistics with the cascade option is slow

  Hi all.
  
  The database is 11.2.0.3 on a linux machine.
  
  I published the following command, but the session was a bit slow.
  
  The size of the table is about 50 GB and has 3 clues.
  
  I said 'degree = 8' for parallel processing.
  
  When collecting statistics on the table, parallel slaves have been invoked and gather statistics on the table ended pretty quickly.
  
  However, when he goes to the collection of statistics on indexes, only an active session was invocked and so "level = 8" option is ignored.
  
  My question is:
  
  Do I need to use dbms_stats.gahter_index_stats instead of the option "cascade" in order to gather statistics on indexes with parallelism?
  
  

  exec dbms_stats.gather_table_stats(ownname=>'SDPSTGOUT',tabname=>'OUT_SDP_CONTACT_HIS',estimate_percent=>10, degree=>8 , method_opt=>'FOR ALL COLUMNS SIZE 1',Granularity=>'ALL',cascade=>TRUE);

  Thanks in advance.
  
  Best regards.

  Hello

  This could happen due to the index being created as NOPARALLEL. Try to redefine with DOP = 8 and see if that helps (running a quick test to verify this before making any expensive DDLS).

  Best regards
  Nikolai

• Collect statistics in oracle 11 g

  Hi all

  OPERATING SYSTEM: AIX
  DB: 11G

  I am trying to collect statistics for a specific schema using the mentioned below command:

  > exec dbms_stats.gather_schema_stats ('schema_name');

  The schema of such size is 140 GB, and it's almost an hour that the above command is still running.
  I need to know if it is normal, is there a way to set the control above to the acceleration of reunification.

  And how can we check if the above command runs successfully from the background, I mean if there is anyway or something like that?

  
  Kind regards
  Sphinx

  Hello

  The runtime for a 140 GB schema seems quite OK.

  Without any other parameters, the work of gather_stats will use the 'compute' option, which takes a long calculation for each table.

  I've written a procedure that checks for 'fade' in dba_tab_statistics tables and calculates these statistics only.

  The request for these tables up looks like:

  SELECT table_name, 'NONE' AS nom_partition

  OF dba_tab_statistics one

  Owner WHERE = i_schema

  AND NVL (stale_stats, 'NULL') = 'YES '.

  AND NVL (stattype_locked, 'NULL') = 'NULL '.

  AND NOT EXISTS

  (SELECT 1

  FROM dba_tab_partitions b

  WHERE table_owner = i_schema

  AND a.table_name = b.table_name)

  UNION ALL

  SELECT table_name, nom_partition

  OF dba_tab_statistics one

  Owner WHERE = i_schema

  AND NVL (stale_stats, 'NULL') = 'YES '.

  AND NVL (stattype_locked, 'NULL') = 'NULL '.

  AND nom_partition IS NOT NULL;

  The preceding section is smooth tables, the lower part is flawed partitions for partitioned tables.

  It allows the procedure to collect statistics for the tables and one or more partitions.

  It ignores the tables that were calculated before the work of the default oracle.

  See you soon,.

  FJFranken

• Total number of records in the table read

  Here is the procedure to read total no of record in the table specified by the user during execution. But it still gives the same answer for all the table. Can someone help me?
  
  create or replace procedure p3 (varchar2, not on the number tab)
  as
  Start
  Select count (*) from no tab;
  end;

  You need dynamic SQL statements.

  Or:
  http://laurentschneider.com/wordpress/2007/04/how-do-i-store-the-counts-of-all-tables.html
  To get the name of the Table and no lines
  http://asktom.Oracle.com/pls/asktom/f?p=100:11:1725645184471282:P11_QUESTION_ID:1660875645686

  Or simply use the data dictionary, collect statistics of the table, then:
  Select table_name, num_rows from user_tables;

• Collect statistics or an index first?

  I am wanting to know which is the most effective in this scenario using Oracle 10.2 g...
  
  1. create a new table.
  2 fill the table with 10 million documents.
  
  then either...
  3. analyze the table to help gather stats
  4 create indexes
  
  or...
  3 create indexes
  4. analyse the table using statistics, including the index
  
  
  Logically, I think that one. However, if there is no cost associated with creating an index on a table that is not monitored AND you will need to gather stats again after an index created I could see how it would not be that.

  I believe that the Dan point is that the index will have to statistics, just as the table will have statistics. It is probably more logical to collecting statistics on both at the same time (using the CASCADE option in the GATHER_TABLE_STATS call) instead of collecting statistics on the table and the index separately. Since you're using 10.2, however, it is less of a concern because the create index automatically collects statistics on the index. This is used to not be the case.

  Justin

• Collects statistics for tables using jobs in Oracle 11 G 11.2.0.1.0?

  Hello
  
  My query is regarding the collection of statistics for tables.
  
  My Version of Oracle DB is:
  BANNER
  --------------------------------------------------------------------------------
  Oracle Database 11 g Enterprise Edition Release 11.2.0.1.0 - 64 bit Production
  PL/SQL Release 11.2.0.1.0 - Production
  CORE 11.2.0.1.0 Production
  AMT for Linux: Version 11.2.0.1.0 - Production
  NLSRTL Version 11.2.0.1.0 - Production
  
  In versions of prior oracle db, we used to schedule tasks to run on a daily basis for collecting statistics. Especially for tables that are frequent and huge inserts.
  
  I read that in 11g stats for all of the schema on a database are automatically make every night jobs. I checked these jobs and I see that they are running on a monthly basis [joined query]. This job is enabled and is scheduled to run monthly.
  This means that my diagram will be analyzed on a monthly basis. My understanding is correct?
  
  Can I still plan jobs to collect statistics for specific tables on every week? This will diminish the performance?
  We expect 100000 documents to insert on a daily basis.

  SELECT  JOB_NAME,  
     START_DATE, REPEAT_INTERVAL, 
       LAST_START_DATE, 
      NEXT_RUN_DATE,ENABLED
  FROM dba_scheduler_jobs
  WHERE job_name LIKE '%STAT%'
  ORDER BY 1;
  JOB_NAME                       START_DATE                             REPEAT_INTERVAL                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  LAST_START_DATE                        NEXT_RUN_DATE                          ENABLED
  ------------------------------ -------------------------------------- ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -------------------------------------- -------------------------------------- -------
  BSLN_MAINTAIN_STATS_JOB        16-AUG-09 12.00.00.000000000 AM -07:00                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  14-APR-13 12.00.00.427370000 AM -07:00 21-APR-13 12.00.00.400000000 AM -07:00 TRUE    
  MGMT_STATS_CONFIG_JOB          15-AUG-09 12.24.04.694342000 AM -07:00 freq=monthly;interval=1;bymonthday=1;byhour=01;byminute=01;bysecond=01                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           01-APR-13 01.01.01.710280000 AM -07:00 01-MAY-13 01.01.01.700000000 AM -07:00 TRUE    

  Thank you
  Somiya

  Your understanding is not correct. These jobs are in dba_autotask_task.
  And they will be run every day.

  HTH

  -------------
  Sybrand Bakker
  Senior Oracle DBA