How To Fix CRMS4_PS_TOOLS151 - Enqueue error; internal error from enqueue server

SAP Error Message - Details

• Message type: E = Error

• Message class: CRMS4_PS_TOOLS - Message Class for Periods & Due Date Tools

• Message number: 151

• Message text: Enqueue error; internal error from enqueue server

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CRMS4_PS_TOOLS151 - Enqueue error; internal error from enqueue server ?

  The SAP error message CRMS4_PS_TOOLS151 indicates an enqueue error, which typically occurs when there is an issue with the enqueue server in the SAP system. This error can arise due to various reasons, including system configuration issues, resource limitations, or problems with the enqueue server itself.
  Causes:
  
  Enqueue Server Issues: The enqueue server may not be running or may have encountered an internal error.
  Lock Table Overflow: The lock table may be full, preventing new locks from being created.
  Network Issues: There may be network connectivity problems between the application server and the enqueue server.
  Configuration Issues: Incorrect configuration settings in the SAP system can lead to enqueue errors.
  Resource Limitations: Insufficient system resources (CPU, memory) can affect the performance of the enqueue server.
  
  Solutions:
  
  
  Check Enqueue Server Status:
  
  Use transaction SM12 to check for any existing locks and clear unnecessary locks if needed.
  Use transaction SM51 to check the status of the enqueue server and ensure it is running.
  
  
  
  Restart Enqueue Server:
  
  If the enqueue server is not responding, consider restarting it. This can often resolve temporary issues.
  
  
  
  Check System Logs:
  
  Review the system logs (transaction SM21) for any related error messages that could provide more context about the issue.
  
  
  
  Increase Lock Table Size:
  
  If the lock table is full, you may need to increase its size. This can be done by adjusting the parameter enque/table_size in the instance profile.
  
  
  
  Check Network Connectivity:
  
  Ensure that there are no network issues affecting communication between the application server and the enqueue server.
  
  
  
  Review Configuration Settings:
  
  Verify that the configuration settings for the enqueue server are correct and aligned with SAP best practices.
  
  
  
  Monitor System Resources:
  
  Use transaction ST02 (buffer management) and ST04 (database performance) to monitor system resources and identify any bottlenecks.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM51: Display instances and their status.
  SM21: System log.
  ST02: Buffer management.
  ST04: Database performance.
  
  
  
  SAP Notes: Always check for the latest SAP Notes related to enqueue errors, as they may provide specific fixes or patches.
  
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or contact SAP support for further assistance.