How To Fix 0S109 - Enqueue Trace switched off

SAP Error Message - Details

• Message type: E = Error

• Message class: 0S - Messages for the SQL trace

• Message number: 109

• Message text: Enqueue Trace switched off

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 0S109 - Enqueue Trace switched off ?

  The SAP error message "0S109 Enqueue Trace switched off" typically indicates that the enqueue trace, which is used for monitoring and debugging the enqueue mechanism in SAP, has been disabled. This can happen for various reasons, and it may affect the ability to diagnose issues related to locking and concurrency in the SAP system.
  Cause:
  
  Configuration Settings: The enqueue trace may have been turned off in the system configuration settings.
  Performance Considerations: In some cases, the trace may be disabled to improve system performance, especially in production environments where extensive logging can lead to overhead.
  System Administration Actions: An administrator may have intentionally disabled the trace for maintenance or troubleshooting purposes.
  
  Solution:
  To resolve the issue and enable the enqueue trace, you can follow these steps:
  
  
  Check Configuration:
  
  Go to transaction code RZ10 (Profile Parameter Maintenance).
  Look for the parameter enque/trace and check its current value.
  If it is set to 0, it means the trace is disabled. Change it to 1 to enable the trace.
  
  
  
  Modify the Profile:
  
  If you need to change the parameter, you can do so by editing the instance profile.
  After making changes, save the profile and restart the SAP instance for the changes to take effect.
  
  
  
  Monitor the Trace:
  
  Once the trace is enabled, you can monitor it using transaction SM12 (Display and Delete Locks) or by checking the enqueue logs.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes for any specific recommendations or considerations regarding the enqueue trace.
  
  
  
  Related Information:
  
  Enqueue Mechanism: The enqueue mechanism in SAP is responsible for managing locks on objects to ensure data consistency and integrity during concurrent access.
  Performance Impact: While enabling the enqueue trace can help in troubleshooting, it may also impact system performance. It is advisable to enable it only when necessary and to disable it afterward.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to the enqueue trace and its configuration.
  
  If you continue to experience issues or if enabling the trace does not resolve your problem, consider reaching out to SAP support for further assistance.