How To Fix /PRA/PN107 - Unable to find an available resource to run aRFC

SAP Error Message - Details

• Message type: E = Error

• Message class: /PRA/PN -

• Message number: 107

• Message text: Unable to find an available resource to run aRFC

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PRA/PN107 - Unable to find an available resource to run aRFC ?

  The SAP error message /PRA/PN107 Unable to find an available resource to run aRFC typically indicates that the system is unable to find an available resource to execute an asynchronous Remote Function Call (aRFC). This can happen for several reasons, and understanding the cause is crucial for resolving the issue.
  Causes:
  
  
  Resource Limitation: The system may have reached the limit of available resources for aRFC processing. This can occur if there are too many concurrent aRFC calls or if the system is under heavy load.
  
  
  Configuration Issues: The configuration settings for aRFC may not be set correctly. This includes settings related to the number of available background work processes.
  
  
  System Performance: If the system is experiencing performance issues, it may not be able to allocate resources for new aRFC calls.
  
  
  Queue Management: If there are issues with the aRFC queue, such as it being full or not being processed correctly, this can lead to resource allocation problems.
  
  
  Network Issues: Problems with network connectivity can also affect the ability to execute aRFC calls, especially if they are dependent on remote systems.
  
  
  Solutions:
  
  
  Check System Load: Monitor the system's performance and load. If the system is under heavy load, consider optimizing the workload or increasing the resources available to the system.
  
  
  Increase Background Work Processes: If the number of background work processes is limited, consider increasing the number of background work processes in the SAP system configuration (transaction RZ10 or RZ12).
  
  
  Review aRFC Configuration: Check the configuration settings for aRFC in transaction SM59 and ensure that they are set correctly. Look for any parameters that may limit the number of concurrent aRFC calls.
  
  
  Check aRFC Queue: Use transaction SMQ1 (for outbound queues) and SMQ2 (for inbound queues) to check the status of the aRFC queues. If there are stuck or failed messages, investigate and resolve those issues.
  
  
  System Restart: In some cases, restarting the SAP system can help clear up resource allocation issues.
  
  
  Network Troubleshooting: If network issues are suspected, check the network connectivity between the SAP system and any remote systems involved in the aRFC calls.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SMQ1 and SMQ2: Monitor aRFC queues.
  RZ10 or RZ12: Adjust system parameters.
  SM37: Monitor background jobs and their statuses.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for more detailed information on aRFC and its configuration.
  
  
  Performance Monitoring Tools: Utilize SAP's performance monitoring tools to analyze system performance and identify bottlenecks.
  
  
  By following these steps, you should be able to diagnose and resolve the /PRA/PN107 Unable to find an available resource to run aRFC error in your SAP system.