How To Fix SDBALM235 - No update of the Optimizer statistics in the last 3 months

SAP Error Message - Details

• Message type: E = Error

• Message class: SDBALM - SAP DB and liveCache Alert Monitoring

• Message number: 235

• Message text: No update of the Optimizer statistics in the last 3 months

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDBALM235 - No update of the Optimizer statistics in the last 3 months ?

  The SAP error message SDBALM235 indicates that the optimizer statistics for a database have not been updated in the last three months. This can lead to suboptimal query performance because the database optimizer relies on these statistics to make informed decisions about how to execute queries efficiently.
  Cause
  The primary cause of this error is that the database statistics have not been updated for an extended period. This can happen due to:
  
  Lack of Scheduled Jobs: There may not be a scheduled job in place to regularly update the optimizer statistics.
  Database Configuration: The database settings may not be configured to automatically gather statistics.
  Low Data Changes: If there have been minimal changes to the data, the statistics may not have been updated automatically.
  Manual Intervention: In some cases, manual intervention may be required to trigger the update of statistics.
  
  Solution
  To resolve the SDBALM235 error, you can take the following steps:
  
  
  Update Statistics Manually:
  
  You can manually update the optimizer statistics using the appropriate SQL commands or database management tools. For example, in SAP HANA, you can use the UPDATE STATISTICS command.
  
  
  
  Schedule Regular Updates:
  
  Set up a regular job to update the optimizer statistics. This can be done using the database's scheduling tools or through SAP's transaction codes (like DBACOCKPIT) to create a job that runs periodically.
  
  
  
  Check Database Configuration:
  
  Review the database configuration settings to ensure that automatic statistics gathering is enabled. This may vary depending on the database system you are using (e.g., Oracle, SQL Server, HANA).
  
  
  
  Monitor Data Changes:
  
  If your application has low data change rates, consider monitoring the data changes and updating statistics accordingly. You may want to adjust the frequency of updates based on the volume of data changes.
  
  
  
  Consult Documentation:
  
  Refer to the specific database documentation for instructions on how to gather statistics, as the commands and procedures can vary between different database systems.
  
  
  
  Related Information
  
  Performance Impact: Not updating optimizer statistics can lead to poor query performance, as the optimizer may choose inefficient execution plans.
  Database Maintenance: Regular maintenance of the database, including updating statistics, is crucial for optimal performance.
  SAP Notes: Check SAP Notes related to performance tuning and database maintenance for additional guidance and best practices.
  
  By following these steps, you should be able to resolve the SDBALM235 error and improve the performance of your SAP system.