How To Fix BGRFC109 - Queue &1 of destination &2 locked for further units

SAP Error Message - Details

• Message type: E = Error

• Message class: BGRFC - qRFC - New Background RFC

• Message number: 109

• Message text: Queue &1 of destination &2 locked for further units

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message BGRFC109 - Queue &1 of destination &2 locked for further units ?

  The SAP error message BGRFC109 indicates that a queue in the background RFC (bRFC) system is locked for further units. This typically occurs when there is an issue with the processing of the bRFC queue, which is used for asynchronous communication between different SAP systems or between different processes within the same system.
  Cause:
  
  Queue Locking: The queue may be locked due to a previous error or an ongoing process that has not completed. This can happen if there are unprocessed units in the queue or if a transaction is holding a lock on the queue.
  System Errors: There may be underlying system errors or issues with the RFC destination that prevent further processing.
  Configuration Issues: Incorrect configuration of the bRFC settings or the RFC destination can lead to locking issues.
  Resource Constraints: If the system is under heavy load or if there are resource constraints (like memory or CPU), it may lead to locking of queues.
  
  Solution:
  
  Check Queue Status: Use transaction SM58 to check the status of the bRFC queues. Look for any entries that are stuck or have errors.
  Release Locks: If you identify that the queue is locked, you may need to release the lock. This can be done by:
  
  Using transaction SMQ1 (for outbound queues) or SMQ2 (for inbound queues) to monitor and manage the queues.
  If necessary, you can delete or process the stuck entries manually.
  
  
  Analyze Logs: Check the application logs (transaction SLG1) for any related error messages that might provide more context on why the queue is locked.
  Check RFC Destination: Ensure that the RFC destination is correctly configured and that the target system is available and responsive.
  System Performance: Monitor system performance and resource usage to ensure that the system is not overloaded. If necessary, optimize performance or increase resources.
  Restart Services: In some cases, restarting the relevant background jobs or services may help to clear the lock.
  
  Related Information:
  
  bRFC Overview: Background RFC (bRFC) is a mechanism in SAP that allows for asynchronous communication between different processes. It is designed to ensure that messages are processed reliably and in the correct order.
  Transaction Codes:
  
  SMQ1: Monitor outbound queues.
  SMQ2: Monitor inbound queues.
  SM58: Monitor and manage asynchronous RFC calls.
  SLG1: View application logs for error messages.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to bRFC and the specific error message.
  
  If the issue persists after trying the above solutions, it may be necessary to consult with SAP support or your system administrator for further assistance.