How To Fix DB6PM158 - Buffer pool &1 is still in use, deletion not possible

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 158

• Message text: Buffer pool &1 is still in use, deletion not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB6PM158 - Buffer pool &1 is still in use, deletion not possible ?

  The SAP error message DB6PM158 indicates that a buffer pool (identified by &1) is still in use, and therefore, it cannot be deleted. This error typically arises in the context of database management within SAP systems, particularly when dealing with buffer pools in the database.
  Cause:
  
  Active Connections: The buffer pool is still being referenced by active database connections or sessions. This means that there are processes or transactions that are currently utilizing the buffer pool.
  Pending Transactions: There may be ongoing transactions that are using the buffer pool, preventing its deletion.
  Configuration Issues: There might be configuration settings that are preventing the buffer pool from being released properly.
  
  Solution:
  
  Check Active Sessions: Use database management tools or SQL queries to check for active sessions that are using the buffer pool. You may need to terminate these sessions if they are no longer needed.
  Wait for Transactions to Complete: If there are ongoing transactions, wait for them to complete before attempting to delete the buffer pool again.
  Force Disconnect: If necessary, you can forcefully disconnect users or sessions that are holding onto the buffer pool, but this should be done with caution as it may lead to data loss or corruption.
  Review Configuration: Check the configuration settings related to buffer pools in your SAP system and database. Ensure that they are set correctly and that there are no restrictions preventing the deletion.
  Restart Database: As a last resort, if the buffer pool is still in use and cannot be released, consider restarting the database. This will terminate all sessions and transactions, allowing you to delete the buffer pool afterward.
  
  Related Information:
  
  Database Documentation: Refer to the documentation for your specific database (e.g., SAP HANA, Oracle, SQL Server) for more details on managing buffer pools and understanding their usage.
  SAP Notes: Check SAP Notes for any known issues or patches related to buffer pool management that may address this error.
  Monitoring Tools: Utilize SAP monitoring tools (like SAP Solution Manager) to keep track of database performance and buffer pool usage, which can help prevent such issues in the future.
  
  Always ensure that you have proper backups and that you understand the implications of terminating sessions or restarting the database before proceeding with any corrective actions.