How To Fix S1821 - No valid refresh of DB Optimizer Statistics

SAP Error Message - Details

• Message type: E = Error

• Message class: S1 - Statistik / SAP-Monitor

• Message number: 821

• Message text: No valid refresh of DB Optimizer Statistics

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message S1821 - No valid refresh of DB Optimizer Statistics ?

  The SAP error message S1821, which states "No valid refresh of DB Optimizer Statistics," typically indicates that the database optimizer statistics are outdated or invalid. This can lead to suboptimal query performance because the database optimizer relies on these statistics to create efficient execution plans for SQL queries.
  Causes:
  
  Outdated Statistics: The statistics for the database tables may not have been updated for a long time, leading to inaccurate data about the distribution of data within the tables.
  Database Changes: Significant changes in the data, such as bulk inserts, updates, or deletions, can render existing statistics obsolete.
  
  Configuration Issues: There may be issues with the configuration of the database or the SAP system that prevent the automatic update of statistics.
  Database Maintenance: Lack of regular database maintenance tasks, such as running the statistics update jobs.
  
  Solutions:
  
  
  Update Statistics Manually: You can manually trigger the update of the database statistics. This can usually be done through the database