How To Fix DT652 - MERGE_BUF: Internal error when writing the buffering parameters

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 652

• Message text: MERGE_BUF: Internal error when writing the buffering parameters

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 DT652 - MERGE_BUF: Internal error when writing the buffering parameters ?

  The SAP error message DT652, which states "MERGE_BUF: Internal error when writing the buffering parameters," typically indicates an issue related to the buffering configuration in the SAP system. This error can occur during the execution of certain transactions or when the system attempts to access buffered data.
  Causes:
  
  Buffer Configuration Issues: The error may arise from incorrect or inconsistent buffer settings in the SAP system.
  Database Issues: Problems with the underlying database, such as corruption or connectivity issues, can lead to this error.
  Transport Issues: If there have been recent transports that included changes to buffering settings or related objects, this could trigger the error.
  System Bugs: There may be bugs in the SAP kernel or specific components that lead to this internal error.
  
  Solutions:
  
  
  Check Buffer Configuration:
  
  Go to transaction code RZ10 to review the profile parameters related to buffering.
  Ensure that the buffering settings for the relevant tables are correctly configured.
  
  
  
  Reinitialize Buffer:
  
  You can try to reinitialize the buffer for the affected tables. This can be done using transaction code SE14 (Database Utility) to adjust the buffering settings.
  
  
  
  Check for Transport Issues:
  
  Review recent transports to see if any changes were made to the buffering settings or related objects. If necessary, revert or adjust these changes.
  
  
  
  Database Consistency Check:
  
  Perform a consistency check on the database to ensure there are no underlying issues. This can be done using transaction DB02 or similar tools.
  
  
  
  Kernel Upgrade:
  
  If the error is due to a known bug, consider upgrading the SAP kernel to the latest version, as SAP frequently releases patches and updates to fix known issues.
  
  
  
  SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that address this specific error. There may be specific fixes or workarounds provided by SAP.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, it may be necessary to contact SAP Support for further assistance. Provide them with detailed information about the error, including any relevant logs or screenshots.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like RZ10, SE14, and DB02 for managing buffer settings and database checks.
  SAP Notes: Regularly check for updates and notes related to your SAP version, as they can provide critical information on known issues and fixes.
  System Logs: Review system logs (transaction SM21) for any additional error messages or warnings that may provide context for the DT652 error.
  
  By following these steps, you should be able to diagnose and resolve the DT652 error in your SAP system.