How To Fix 14424 - Error in semaphore lock

SAP Error Message - Details

• Message type: E = Error

• Message class: 14 - Task handler messages

• Message number: 424

• Message text: Error in semaphore lock

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 14424 - Error in semaphore lock ?

  The SAP error message 14424, which indicates "Error in semaphore lock," typically arises in the context of database operations or when multiple processes are trying to access the same resource simultaneously. Semaphore locks are used to manage access to shared resources in a multi-threaded environment, and this error suggests that there is a problem with acquiring or releasing these locks.
  Causes:
  
  Database Locking Issues: The error may occur if there are issues with database locks, such as deadlocks or contention for resources.
  System Resource Limitations: Insufficient system resources (like memory or CPU) can lead to semaphore lock errors.
  Configuration Issues: Incorrect configuration settings in the SAP system or the underlying database can lead to locking problems.
  Long-running Transactions: If a transaction takes too long to complete, it may hold onto a lock longer than expected, causing other processes to fail when trying to acquire the same lock.
  Concurrent Processes: Multiple processes trying to access the same resource simultaneously can lead to contention and semaphore lock errors.
  
  Solutions:
  
  Check for Long-running Transactions: Use transaction codes like SM12 (to check for locks) and SM21 (to check system logs) to identify any long-running transactions that may be holding locks.
  Review System Resources: Monitor system resources (CPU, memory, etc.) to ensure that the system is not under heavy load. If necessary, optimize performance or scale resources.
  Database Configuration: Review and adjust database configuration settings related to locking and concurrency. This may involve consulting with your database administrator.
  Restart the Application Server: In some cases, restarting the application server can clear up semaphore lock issues.
  Check for Deadlocks: Use tools or transaction codes to analyze and resolve any deadlocks that may be occurring in the system.
  Update SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide patches that could resolve underlying issues.
  
  Related Information:
  
  Transaction Codes: 
  
  SM12: To view and manage locks.
  SM21: To view system logs for errors and warnings.
  ST22: To check for dumps that may provide more context on the error.
  
  
  SAP Notes: Always check the SAP Support Portal for any specific notes related to error 14424, as there may be updates or patches available.
  Documentation: Review SAP documentation for best practices on managing locks and transactions in your specific SAP environment.
  
  If the issue persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.