How To Fix DB6PM178 - Index &1.&2 does not have a valid statistics in system catalog

SAP Error Message - Details

• Message type: E = Error

• Message class: DB6PM - DB2 UDB for UNIX, Windows: Performance Monitoring

• Message number: 178

• Message text: Index &1.&2 does not have a valid statistics in system catalog

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB6PM178 - Index &1.&2 does not have a valid statistics in system catalog ?

  The SAP error message DB6PM178 indicates that the specified index does not have valid statistics in the system catalog. This can occur in various database systems that SAP supports, such as Oracle, SQL Server, or others. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Outdated Statistics: The statistics for the index may not have been updated after data changes, leading to the database optimizer being unable to make informed decisions about query execution plans.
  Index Corruption: The index may be corrupted or not properly created, which can lead to the absence of valid statistics.
  Database Maintenance: Regular maintenance tasks, such as reorganization or rebuilding of indexes, may not have been performed, resulting in stale or missing statistics.
  Database Configuration: Certain database configurations may prevent the automatic gathering of statistics.
  
  Solution:
  
  
  Update Statistics:
  
  Use the database-specific command to gather statistics for the index. For example:
  
  Oracle: EXEC DBMS_STATS.GATHER_INDEX_STATS('schema_name', 'index_name');
  SQL Server: UPDATE STATISTICS schema_name.index_name;
  
  
  This will refresh the statistics and make them valid.
  
  
  
  Rebuild the Index:
  
  If updating statistics does not resolve the issue, consider rebuilding the index. This can be done using:
  
  Oracle: ALTER INDEX index_name REBUILD;
  SQL Server: ALTER INDEX index_name ON table_name REBUILD;
  
  
  
  
  
  Check Database Configuration:
  
  Ensure that the database is configured to automatically gather statistics. This may involve checking settings related to auto-update statistics.
  
  
  
  Run Database Maintenance:
  
  Schedule regular maintenance tasks to ensure that statistics are kept up to date and that indexes are optimized.
  
  
  
  Consult Database Documentation:
  
  Refer to the specific database documentation for commands and best practices related to index statistics.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message. SAP Notes often provide insights into known issues and their resolutions.
  Database Logs: Review database logs for any additional error messages or warnings that may provide context for the issue.
  Performance Monitoring: Monitor the performance of queries that utilize the affected index to determine if the lack of valid statistics is impacting performance.
  
  Conclusion:
  The DB6PM178 error indicates a problem with index statistics that can typically be resolved by updating or rebuilding the index. Regular maintenance and monitoring are essential to prevent such issues from occurring in the future. If the problem persists after attempting these solutions, consider reaching out to your database administrator or SAP support for further assistance.