How To Fix /BOBF/COM_GENERATOR174 - Lock object &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /BOBF/COM_GENERATOR -

• Message number: 174

• Message text: Lock object &1 already exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /BOBF/COM_GENERATOR174 - Lock object &1 already exists ?

  The SAP error message /BOBF/COM_GENERATOR174 Lock object &1 already exists typically occurs in the context of Business Object Framework (BOBF) when there is an attempt to create or modify a lock object that is already in use or has not been released properly. This can happen during the generation of business objects or when multiple processes are trying to access the same lock object simultaneously.
  Cause:
  
  Concurrent Access: Multiple sessions or processes are trying to create or access the same lock object at the same time.
  Improper Release: A previous process that created the lock object did not release it properly, leading to it being in a locked state.
  System Issues: There may be underlying issues with the SAP system or database that are causing locks to persist longer than expected.
  
  Solution:
  
  
  Check for Active Sessions: Use transaction codes like SM12 (to check for lock entries) to see if there are any active sessions holding the lock object. If you find any, you may need to terminate those sessions if they are no longer needed.
  
  
  Release Locks: If you identify that a lock is held unnecessarily, you can manually release it using transaction SM12. Be cautious when doing this, as it may affect other users or processes.
  
  
  Review Code: If you are developing or modifying BOBF objects, ensure that your code properly handles lock creation and release. Make sure that locks are released in all scenarios, including error handling.
  
  
  System Restart: In some cases, a system restart may be necessary to clear persistent locks, especially if they are caused by system issues.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant notes or patches that may address this specific error. There may be updates or fixes available that can resolve the issue.
  
  
  Increase Lock Timeout: If the issue is due to long-running processes, consider increasing the lock timeout settings in your SAP system configuration.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related errors or warnings.
  SE80: To access the Object Navigator for BOBF objects.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for BOBF and locking mechanisms for more detailed information on how locks are managed within the framework.
  
  
  Performance Monitoring: Use transaction ST22 (Dump Analysis) and SM37 (Job Monitoring) to check for any background jobs or dumps that may be related to the locking issue.
  
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.