How To Fix /PF1/MSG_EH055 - A lock request failed

SAP Error Message - Details

• Message type: E = Error

• Message class: /PF1/MSG_EH -

• Message number: 055

• Message text: A lock request failed

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 /PF1/MSG_EH055 - A lock request failed ?

  The SAP error message /PF1/MSG_EH055 A lock request failed typically indicates that a lock request in the SAP system could not be fulfilled. This can happen for various reasons, often related to concurrency issues where multiple processes are trying to access the same resource simultaneously.
  Causes:
  
  Lock Conflicts: Another user or process is holding a lock on the same object that you are trying to access.
  Long-Running Transactions: A transaction that takes a long time to complete may hold locks longer than expected, causing other transactions to fail.
  Deadlocks: Two or more processes are waiting for each other to release locks, leading to a deadlock situation.
  System Performance Issues: High system load or performance issues can lead to delays in lock management.
  Configuration Issues: Incorrect configuration of lock parameters or settings in the SAP system.
  
  Solutions:
  
  Identify Lock Holders: Use transaction code SM12 to check for existing locks. You can see which user or process is holding the lock and take appropriate action.
  Release Locks: If you find that a lock is held unnecessarily, you can manually delete the lock entry in SM12 (ensure you have the necessary authorizations).
  Optimize Transactions: Review and optimize long-running transactions to ensure they complete quickly and release locks promptly.
  Check for Deadlocks: Use transaction SM21 to check the system log for deadlock situations and analyze the processes involved.
  Increase Lock Timeout: If appropriate, consider increasing the lock timeout settings in the system configuration.
  System Performance Tuning: Monitor system performance and consider tuning the database or application server settings to improve overall performance.
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage lock entries.
  SM21: System log for monitoring system events.
  ST22: Dump analysis to check for ABAP runtime errors.
  SM37: Job monitoring to check for background jobs that may be causing locks.
  
  
  
  SAP Notes: Check SAP Notes related to lock management and performance issues for specific guidance and patches.
  
  
  Documentation: Refer to SAP Help documentation for detailed information on lock management and troubleshooting.
  
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.