How To Fix SWF_RUN665 - Workflow runtime system terminated following enqueue loss; call TA SM21

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_RUN - Workflow Runtime System

• Message number: 665

• Message text: Workflow runtime system terminated following enqueue loss; call TA SM21

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 SWF_RUN665 - Workflow runtime system terminated following enqueue loss; call TA SM21 ?

  The SAP error message SWF_RUN665 indicates that the workflow runtime system has been terminated due to an enqueue loss. This typically occurs when there is a problem with the SAP enqueue server, which is responsible for managing locks on objects in the SAP system. When the enqueue server fails or loses its connection, it can lead to inconsistencies and the termination of workflow processes.
  Cause:
  
  Enqueue Server Failure: The enqueue server may have crashed or become unresponsive.
  Network Issues: There may be network connectivity problems between the application server and the enqueue server.
  Resource Limitations: The system may be running low on resources (CPU, memory, etc.), causing the enqueue server to fail.
  Database Issues: Problems with the database can also lead to enqueue loss.
  Configuration Issues: Incorrect configuration settings in the SAP system can lead to enqueue server instability.
  
  Solution:
  
  Check SM21 Logs: As suggested in the error message, check the system log (transaction code SM21) for any related error messages or warnings that can provide more context about the enqueue loss.
  Restart Enqueue Server: If the enqueue server is down, restart it. This can often resolve temporary issues.
  Check System Resources: Monitor system resources (CPU, memory, disk space) to ensure that the system is not overloaded. If necessary, optimize performance or allocate more resources.
  Network Connectivity: Verify network connections between application servers and the enqueue server. Ensure that there are no firewalls or network issues causing disruptions.
  Database Health: Check the health of the database and ensure that it is functioning correctly. Look for any locks or long-running transactions that may be causing issues.
  Review Configuration: Review the configuration settings for the enqueue server and ensure they are set correctly. Consult SAP documentation for best practices.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches or updates.
  
  Related Information:
  
  
  Transaction Codes:
  
  SM21: System Log - to check for errors and warnings.
  SM12: Display and delete lock entries - to check for any locks that may be causing issues.
  SM37: Job Monitoring - to check for any failed jobs that may be related to the workflow.
  SM50/SM66: Process Overview - to monitor running processes and identify any that may be causing resource issues.
  
  
  
  SAP Documentation: Refer to SAP Help Portal for detailed documentation on workflow management and enqueue server configuration.
  
  
  SAP Community: Engage with the SAP Community forums for insights from other users who may have experienced similar issues.
  
  
  If the problem persists after following these steps, it may be necessary to involve SAP support for further investigation and assistance.