How To Fix S_UNIFIED_CON109 - Set Lock has failed because one single processing action &1 is running

SAP Error Message - Details

• Message type: E = Error

• Message class: S_UNIFIED_CON - Message Class for Unified Connectivity

• Message number: 109

• Message text: Set Lock has failed because one single processing action &1 is running

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message S_UNIFIED_CON109 - Set Lock has failed because one single processing action &1 is running ?

  The SAP error message S_UNIFIED_CON109 indicates that a lock could not be set because a single processing action is already running. This typically occurs in scenarios where multiple processes or transactions are trying to access the same resource or data simultaneously, leading to a conflict.
  Cause:
  
  Concurrent Processing: The error usually arises when a transaction or process is already being executed, and another attempt is made to execute the same transaction or process that requires a lock on the same resource.
  Long-Running Transactions: If a transaction takes a long time to complete, it can block other transactions from acquiring the necessary locks.
  Deadlocks: In some cases, deadlocks can occur if two or more processes are waiting for each other to release locks.
  
  Solution:
  
  Wait and Retry: If the process is expected to complete soon, you can wait for a while and then retry the operation.
  Check Running Processes: Use transaction codes like SM50 (Process Overview) or SM66 (Global Process Overview) to check for any long-running processes that might be holding the lock. If you identify a process that can be safely terminated, you can do so.
  Optimize Long-Running Transactions: If certain transactions are consistently taking too long, consider optimizing them to reduce their execution time.
  Review Lock Entries: Use transaction SM12 to review and manage lock entries. You can see which user or process is holding the lock and take appropriate action if necessary.
  Increase System Resources: If the issue is frequent, consider increasing system resources (CPU, memory) to handle more concurrent processes.
  Consult with Basis Team: If the issue persists, it may be necessary to consult with your SAP Basis team to analyze the system's performance and locking behavior.
  
  Related Information:
  
  Transaction Codes:
  
  SM50: Monitor active processes.
  SM66: Monitor global processes.
  SM12: Manage lock entries.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to locking and performance.
  Performance Tuning: Consider reviewing performance tuning guides for your specific SAP environment to improve overall system efficiency.
  
  By following these steps, you should be able to resolve the S_UNIFIED_CON109 error and prevent it from occurring in the future.