How To Fix D3161 - RUNSTATS needed on table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: D3 - CCMS - DB2 on OS390

• Message number: 161

• Message text: RUNSTATS needed on table &1

Self-Explanatory Message

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• What is the cause and solution for SAP error message D3161 - RUNSTATS needed on table &1 ?

  The SAP error message D3161, which states "RUNSTATS needed on table &1," indicates that the database statistics for the specified table (represented by &1) are outdated or missing. This can lead to inefficient query execution plans, resulting in poor performance when accessing the table.
  Cause:
  The primary cause of this error is that the database statistics for the specified table have not been updated recently. Database statistics are essential for the query optimizer to make informed decisions about how to execute SQL queries efficiently. If the statistics are outdated, the optimizer may choose suboptimal execution plans, leading to performance issues.
  Solution:
  To resolve this error, you need to run the RUNSTATS command (or its equivalent, depending on the database system you are using) on the specified table. This command collects and updates the statistics for the table, allowing the query optimizer to generate better execution plans.
  Here are the general steps to resolve the issue:
  
  
  Identify the Table: Determine which table is causing the error by checking the error message for the table name.
  
  
  Run the Statistics Command:
  
  If you are using a database like DB2, you can run the following command:
  RUNSTATS ON TABLE <schema_name>.<table_name>;
  
  For other databases, the command may vary. For example, in Oracle, you might use:
  EXEC DBMS_STATS.GATHER_TABLE_STATS('<schema_name>', '<table_name>');
  
  
  
  
  Schedule Regular Updates: To prevent this issue from recurring, consider scheduling regular updates of database statistics. This can often be done through database maintenance jobs.
  
  
  Monitor Performance: After updating the statistics, monitor the performance of queries involving the table to ensure that the changes have had a positive effect.
  
  
  Related Information:
  
  Database Documentation: Refer to the documentation for your specific database system for detailed instructions on how to run statistics commands.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error message.
  Performance Tuning: Consider reviewing overall database performance tuning practices, including indexing strategies and query optimization, to further enhance performance.
  
  By following these steps, you should be able to resolve the D3161 error and improve the performance of queries involving the affected table.