How To Fix D3821 - No active group buffer pool

SAP Error Message - Details

• Message type: E = Error

• Message class: D3 - CCMS - DB2 on OS390

• Message number: 821

• Message text: No active group buffer pool

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message D3821 - No active group buffer pool ?

  The SAP error message D3821, which states "No active group buffer pool," typically occurs in the context of SAP systems that utilize the group buffer pool (GBP) for managing shared data across multiple application servers. This error indicates that the system is unable to find an active group buffer pool for the specified group, which can lead to issues with data consistency and performance.
  Causes:
  
  Configuration Issues: The group buffer pool may not be properly configured in the SAP system. This can happen if the GBP is not defined or if there are issues with the configuration parameters.
  Inactive GBP: The group buffer pool may be inactive due to system changes, such as a restart or a configuration change that has not been properly applied.
  Memory Issues: Insufficient memory allocation for the group buffer pool can lead to it being unable to function correctly.
  Database Issues: Problems with the underlying database or connectivity issues can also lead to this error.
  Transport Issues: If there are transport requests that have not been properly imported, it may lead to inconsistencies in the GBP.
  
  Solutions:
  
  
  Check Configuration: Verify the configuration of the group buffer pool in the SAP system. Ensure that it is correctly defined and active.
  
  Use transaction code RZ10 to check the profile parameters related to GBP.
  Ensure that the parameters gbp/enable and gbp/size are set correctly.
  
  
  
  Activate GBP: If the group buffer pool is inactive, you may need to activate it. This can often be done through the SAP GUI or by restarting the application server.
  
  
  Memory Allocation: Ensure that there is sufficient memory allocated for the group buffer pool. You may need to adjust the memory settings in the instance profile.
  
  
  Check Database Connectivity: Ensure that the database is running correctly and that there are no connectivity issues. Check the database logs for any errors.
  
  
  Transport Management: If the issue arose after a transport, check the transport logs to ensure that all necessary objects were transported correctly. Re-import any missing transports if necessary.
  
  
  System Restart: In some cases, a system restart may resolve temporary issues with the GBP.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that can resolve the issue.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on configuring and managing the group buffer pool.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Monitoring Tools: Use SAP monitoring tools (like ST02, ST04) to analyze memory usage and performance metrics related to the group buffer pool.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.