Get the free Best Practices for Gathering Optimizer Statistics with Oracle Database 12c Release 2
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This white paper details best practices for gathering optimizer statistics in Oracle Database 12c Release 2, covering methods, timing, quality assurance, and performance strategies.
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How to fill out best practices for gaformring
How to fill out Best Practices for Gathering Optimizer Statistics with Oracle Database 12c Release 2
01
Access the Oracle Database 12c Release 2 environment where you want to gather optimizer statistics.
02
Identify the schema or tables for which you need to collect statistics.
03
Use the DBMS_STATS package to gather statistics. Start with the DBMS_STATS.GATHER_TABLE_STATS procedure for each table.
04
Specify the appropriate options to customize the gathering process, such as the degree of parallelism or sample size.
05
Consider using the auto sample size feature for automatic determination of the sample size needed for accurate statistics.
06
Execute the statistics gathering job during a low-usage period to minimize impact on system performance.
07
Validate the gathered statistics by reviewing the DBA_TAB_STATISTICS and DBA_TAB_COL_STATISTICS views for accuracy.
08
Schedule regular statistics collection as part of routine maintenance to ensure that the optimizer has up-to-date information.
Who needs Best Practices for Gathering Optimizer Statistics with Oracle Database 12c Release 2?
01
Database Administrators (DBAs) managing Oracle Database 12c environments.
02
Developers who need to optimize SQL performance by understanding query plans.
03
System architects and planners who are involved in database performance tuning.
04
Organizations seeking to maintain and improve application performance relying on an Oracle Database.
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What is Best Practices for Gathering Optimizer Statistics with Oracle Database 12c Release 2?
Best Practices for Gathering Optimizer Statistics outlines the recommended procedures and methods for collecting statistics that help the Oracle optimizer efficiently execute SQL queries in Oracle Database 12c Release 2.
Who is required to file Best Practices for Gathering Optimizer Statistics with Oracle Database 12c Release 2?
DBAs (Database Administrators) and database developers are typically required to follow and implement the Best Practices for Gathering Optimizer Statistics to ensure optimal performance of the database.
How to fill out Best Practices for Gathering Optimizer Statistics with Oracle Database 12c Release 2?
To fill out the Best Practices, users should include detailed information on the current statistics settings, methods used for gathering statistics, any automation scripts in place, and results from previous optimizations or analyses.
What is the purpose of Best Practices for Gathering Optimizer Statistics with Oracle Database 12c Release 2?
The purpose is to ensure that the Oracle Database has accurate and up-to-date statistics, which enhances the performance of SQL queries by allowing the optimizer to make informed decisions on execution plans.
What information must be reported on Best Practices for Gathering Optimizer Statistics with Oracle Database 12c Release 2?
The report should include details on the frequency of statistics gathering, methods used (such as DBMS_STATS), target objects for statistics, and any relevant performance metrics before and after applying the statistics.
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