How To Fix D7015 - Checks age of optimizer statistics (RSALSUP5's logic)

SAP Error Message - Details

• Message type: E = Error

• Message class: D7 - Messages for Development Class SDBO

• Message number: 015

• Message text: Checks age of optimizer statistics (RSALSUP5's logic)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message D7015 - Checks age of optimizer statistics (RSALSUP5's logic) ?

  The SAP error message D7015, which indicates that there is an issue with the age of optimizer statistics, is related to the database's query optimization process. This message typically arises when the optimizer statistics for database tables are outdated or missing, which can lead to inefficient query execution plans and performance issues.
  Cause:
  
  Outdated Statistics: The optimizer statistics for the database tables may not have been updated for a long time, leading to suboptimal query performance.
  Missing Statistics: In some cases, statistics may not have been generated for certain tables, which can also trigger this error.
  Database Changes: Significant changes in the data (like bulk inserts, updates, or deletions) can render existing statistics obsolete.
  Configuration Issues: There may be configuration settings in the database that prevent automatic updates of statistics.
  
  Solution:
  
  
  Update Statistics: The primary solution is to update the optimizer statistics for the affected tables. This can usually be done using the following methods:
  
  SAP Transaction: Use transaction code DBACOCKPIT or ST04 to access the database performance monitor and update statistics.
  SQL Command: If you have access to the database, you can run a command to update statistics. For example, in SQL Server, you might use:
  EXEC sp_updatestats;
  In Oracle, you might use:
  EXEC DBMS_STATS.GATHER_SCHEMA_STATS('schema_name');
  
  SAP Report: You can also use the SAP report RSANALYZE to analyze and update statistics.
  
  
  
  Schedule Regular Updates: To prevent this issue from recurring, consider scheduling regular updates of optimizer statistics as part of your database maintenance plan.
  
  
  Monitor Performance: After updating the statistics, monitor the performance of your queries to ensure that the changes have had a positive effect.
  
  
  Check Configuration: Review the database configuration settings to ensure that automatic statistics updates are enabled, if applicable.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to D7015 for any specific recommendations or patches that may address this issue.
  Database Documentation: Refer to the documentation for your specific database (e.g., Oracle, SQL Server, HANA) for detailed instructions on managing optimizer statistics.
  Performance Tuning: Consider engaging in broader performance tuning activities if you frequently encounter issues related to optimizer statistics.
  
  By addressing the underlying causes of the D7015 error and implementing regular maintenance practices, you can improve the performance of your SAP system and reduce the likelihood of encountering this error in the future.