How To Fix BGRFC655 - Number of running outbound schedulers

SAP Error Message - Details

• Message type: E = Error

• Message class: BGRFC - qRFC - New Background RFC

• Message number: 655

• Message text: Number of running outbound schedulers

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message BGRFC655 - Number of running outbound schedulers ?

  The SAP error message BGRFC655 indicates that the number of running outbound schedulers has reached its limit. This is related to the background RFC (BGRFC) mechanism in SAP, which is used for asynchronous communication between different SAP systems or between different instances of the same system.
  Cause:
  
  Configuration Limits: The system has a predefined limit on the number of outbound schedulers that can run simultaneously. If this limit is reached, new requests cannot be processed until some of the existing ones complete.
  Long-Running Processes: If there are long-running outbound processes, they can occupy the available slots, leading to this error.
  System Load: High system load or resource contention can also cause delays in processing, leading to the maximum number of schedulers being reached.
  Deadlocks or Errors: If there are deadlocks or errors in the existing outbound processes, they may not complete, thus blocking new requests.
  
  Solution:
  
  Increase the Limit: You can increase the number of allowed outbound schedulers by adjusting the configuration settings in the SAP system. This can be done in transaction RZ10 or RZ11 by changing the parameter bgRFC/OUTBOUND/NUM_SCHEDULERS.
  Monitor and Optimize Processes: Use transaction SM58 to monitor the status of outbound RFC calls. Identify any long-running or stuck processes and resolve them.
  Check System Performance: Analyze system performance and resource usage. If the system is under heavy load, consider optimizing the workload or scaling resources.
  Review Logs: Check the BGRFC logs for any errors or warnings that might indicate why the outbound schedulers are not completing. This can provide insights into specific issues that need to be addressed.
  Restart the BGRFC: In some cases, restarting the BGRFC can help clear any stuck processes. This can be done using transaction SM58 or SLG1 for logging.
  
  Related Information:
  
  Transaction Codes: 
  
  SM58: Monitor outbound RFC calls.
  SLG1: View application logs.
  RZ10 or RZ11: Change system parameters.
  
  
  SAP Notes: Check for relevant SAP Notes that may provide additional guidance or patches related to BGRFC issues.
  Documentation: Refer to SAP Help documentation for BGRFC for detailed information on configuration and troubleshooting.
  
  By following these steps, you should be able to resolve the BGRFC655 error and ensure that your outbound processes are functioning correctly.