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Please see below SAP Notes:- 588668 – FAQ: Database statistics. 403713 – BRCONNECT: Parallel updating of statistics 129252 – Oracle DB Statistics for BW Tables (if you are using a BW system) You can run Update stats job from DB13 or BR*tools or just execute below command at OS level. brconnect -u / -c -f stats -t ALL
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DB Statistics
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How to update the database statistics for SAP BW tables?
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In SAP Transaction DBACOCKPIT you can manually update the database statistics for any INDEX or COLUMN STATISTICS of any table (not only for SAP BW tables). Here you can choose any sample rate you want. However, we do not recommend using DBACOCKPIT to update the statistics for SAP BW tables.
To update statistics for a single table:
- Log on to the operating system user with <sid>adm
- Open a shell / command line and log on to the database using: isql -S<SID> -Usapsa -P<password> use <SID>
- Use the following command to start the statistics update for a table: update index statistics SAPSR3.<TABLENAME> go
How does SAP BW update statistics?
In newer SAP BW support packages, the statistics of these tables are automatically updated by SAP BW (means: SAP BW is explicitly executing a manual UPDATE STATISTICS command on SQL Server when running the BW query). The second example are small dimension tables.
How to reduce the overhead of the BW process type ‘build database statistics’?
You can further reduce the overhead of the BW process type “Construct Database Statistics” by leveraging Lightweight Update Statistics, a new feature of SAP BW running on Microsoft SQL Server. As a result, UPDATE STATISTICS is actually only performed on two types of tables:
How do I use rsddstat in BW statistics?
BW 3.x: – before you use table RSDDSTAT you must activate the BW Statistics: RSA1 -> Tools -> BW Stats for InfoProviders – make sure that you have stats checked for ALL InfoProviders that you are querying on – to activate statistics goto tcode RSA1 .. Tools … Settings for BI Stats RSDDSTAT* predefined views & tables in BI 7.x:
How do I update the database statistics of an infocube?
You can manually update the database statistics of all tables belonging to an InfoCube in transaction RSA1 => (select) InfoProvider => (right click) Manage => (choose tab) Performance. There are two buttons: “Refresh Statistics” and “Create Statistics (Btch)”.
Can I use DBMS_STATS in SAP?
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You can use the oracle tools (DBMS_STATS) but SAP does not support their usage “directly” only via BRCONNECT. 21. DBMS_STATS You cannot use DBMS_STATS to create statistics directly on a regular basis. You can use DBMS_STATS to create statistics via BRCONNECT (SAP Note 408532).
How to collect Statisics of DB and SAP?
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Hope this helps. Run TCode SA38 and enter RSSTAT* in the field Program then press F4 and then click execute …you will find different Programs which are required for collecting statisics of DB and SAP along with their description. Hope this will help you.
Run TCode SA38 and enter RSSTAT* in the field Program then press F4 and then click execute …you will find different Programs which are required for collecting statisics of DB and SAP along with their description. Hope this will help you. Regards, Kalyan Add a Comment Alert Moderator Vote up 0 Vote down Former Member Feb 25, 2009 at 11:32 AM Hi,
Can I use DBMS_STATS in SAP?
You can use the oracle tools (DBMS_STATS) but SAP does not support their usage “directly” only via BRCONNECT. 21. DBMS_STATS You cannot use DBMS_STATS to create statistics directly on a regular basis. You can use DBMS_STATS to create statistics via BRCONNECT (SAP Note 408532).
How do I collect statistics in Oracle Text?
Collecting Statistics. By default, Oracle Text uses the cost-based optimizer (CBO) to determine the best execution plan for a query. To enable the optimizer to better estimate costs, you can calculate the statistics on the table you query as follows: ANALYZE TABLE
What is BW Statistics in SAP?
BW Statistics Architecture BW statistics allow you to record runtime data for BW processes and events in SAP BEx, Analytic Engine and in the Data Warehouse. The system records performance-intensive processing steps (known as statistics events).
How do I re-collect the statistics on a table?
To re-collect the statistics on a table, enter the ANALYZE statement as many times as necessary or use the DBMS_STATS package. By collecting statistics on the Text domain index, the cost-based optimizer in Oracle Database is able to perform the following tasks:
How to update DB stats?
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588668 – FAQ: Database statistics. 129252 – Oracle DB Statistics for BW Tables (if you are using a BW system) You can run Update stats job from DB13 or BR*tools or just execute below command at OS level. DB stats should be uptodate or else it may give sever performance issues. Hope this helps.
How do I update all statistics for a given database?
The second part of the solution is to create a Transact-SQL query to update all statistics for a given database. This is achieved with the use of procedure sp_updatestats. This runs the UPDATE STATISTICS command against all user defined tables in the current database.
When does SQL Server update the statistics of an object?
SQL Server updates the statistics after the approx. 31622 modifications in the object. Note: the database compatibility level should be 130 or above to use this dynamic threshold statistics calculations. SQL Server uses synchronous mode to update the statistics.
How to update statistics after index rebuild in SQL Server?
SQL Server automatically updates the statistics after the index rebuild. It is equivalent to update statistics with FULL SCAN however; it does not update the column statistics. We should update column statistics after index rebuild as well. We can use the following queries to do the task for all statistics on a specified object.
What is SP_updatestats in SQL Server?
More about SQL Server sp_updatestats. According to Microsoft documentation, as we commented earlier, this function executes UPDATE STATISTICS against all user defined and internal tables on a database. You can also specify the RESAMPLE parameter as well. This is used to update each statistic using its most recent sample rate.
References:
Database Statistics with BR*Tools – SAP
Update Database Statistics with SAP BRTOOLS – ITsiti
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How does SAP BW update statistics?
How to reduce the overhead of the BW process type ‘build database statistics’?
How do I use rsddstat in BW statistics?
How do I update the database statistics of an infocube?
How to update the database statistics for SAP BW tables?
How do I update all statistics for a given database?
When does SQL Server update the statistics of an object?
How to update statistics after index rebuild in SQL Server?
What is SP_updatestats in SQL Server?
How to update DB stats?
Can I use DBMS_STATS in SAP?
Can I use DBMS_STATS in SAP?
How do I collect statistics in Oracle Text?
What is BW Statistics in SAP?
How do I re-collect the statistics on a table?
How to collect Statisics of DB and SAP?
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