How To Fix RH034 - Internal error - the enqueue lock can not be removed

SAP Error Message - Details

• Message type: E = Error

• Message class: RH - BW: Hierarchies ( basic functions )

• Message number: 034

• Message text: Internal error - the enqueue lock can not be removed

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 RH034 - Internal error - the enqueue lock can not be removed ?

  The SAP error message RH034, which states "Internal error - the enqueue lock cannot be removed," typically indicates an issue with the enqueue mechanism in the SAP system. This error can occur due to various reasons, including:
  Causes:
  
  System Lock Issues: The enqueue lock may not be released properly due to a system error or a crash.
  Database Issues: Problems with the database can lead to inconsistencies in the lock table.
  Transport Issues: If there are issues during a transport process, it may lead to locks not being released.
  Program Errors: Bugs in custom programs or standard SAP programs can lead to this error.
  Concurrency Issues: Multiple processes trying to access the same resource can lead to lock contention.
  
  Solutions:
  
  Check System Logs: Review the system logs (transaction SM21) for any related errors or warnings that could provide more context.
  Release Locks Manually: Use transaction SM12 to check for and manually delete any stale locks that may be causing the issue.
  Restart Enqueue Server: If the enqueue server is not functioning correctly, restarting it can help. This can be done through transaction SMMS or by restarting the SAP instance.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and support packages, as this may resolve known bugs.
  Review Custom Code: If the error is related to custom development, review the code for any potential issues that could lead to improper lock handling.
  Database Consistency Check: Run database consistency checks to ensure that there are no underlying issues with the database that could be causing the lock problem.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for further assistance, especially if it appears to be a bug or a deeper system issue.
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM21: To check system logs.
  SM37: To monitor background jobs that may be related to the issue.
  SMMS: To manage the enqueue server.
  
  
  
  Documentation: Refer to SAP Notes and documentation related to enqueue locks and error RH034 for more detailed troubleshooting steps.
  
  
  System Monitoring: Regularly monitor the system for lock contention and performance issues to prevent such errors from occurring in the future.
  
  
  By following these steps, you should be able to diagnose and resolve the RH034 error in your SAP system.