How To Fix BGRFC021 - Instance &1: bgRFC supervisor (&2) closed

SAP Error Message - Details

• Message type: E = Error

• Message class: BGRFC - qRFC - New Background RFC

• Message number: 021

• Message text: Instance &1: bgRFC supervisor (&2) closed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message BGRFC021 - Instance &1: bgRFC supervisor (&2) closed ?

  The SAP error message BGRFC021 indicates that the bgRFC (background Remote Function Call) supervisor for a specific instance has closed unexpectedly. This can lead to issues with the processing of bgRFC calls, which are used for asynchronous communication between different SAP systems or within the same system.
  Cause:
  The error can occur due to several reasons, including:
  
  Instance Shutdown: The bgRFC supervisor instance may have been shut down or restarted, either manually or due to system maintenance.
  Resource Issues: Insufficient system resources (like memory or CPU) can cause the bgRFC supervisor to terminate unexpectedly.
  Configuration Issues: Incorrect configuration settings for bgRFC or the underlying transport layer can lead to this error.
  Network Issues: Problems with network connectivity can also cause the bgRFC supervisor to fail.
  System Errors: Other underlying system errors or bugs in the SAP system can lead to the supervisor closing.
  
  Solution:
  To resolve the BGRFC021 error, you can take the following steps:
  
  
  Check Instance Status: Verify if the bgRFC supervisor instance is running. You can do this by checking the instance status in the SAP Management Console (SAP MC) or using transaction SM51 to see the list of active instances.
  
  
  Restart the Supervisor: If the bgRFC supervisor is not running, you may need to restart it. This can often be done by restarting the affected instance.
  
  
  Review Logs: Check the system logs (transaction SM21) and the bgRFC logs (transaction SLG1) for any related error messages that could provide more context on why the supervisor closed.
  
  
  Check System Resources: Monitor system resources to ensure that there are no bottlenecks. Use transaction ST02 (buffer management) and ST06 (OS monitoring) to check for memory and CPU usage.
  
  
  Configuration Review: Review the bgRFC configuration settings in transaction SICF and ensure that they are correctly set up.
  
  
  Network Check: Ensure that there are no network issues affecting communication between the SAP systems involved.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches that could resolve underlying issues.
  
  
  Consult SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance.
  
  
  Related Information:
  
  bgRFC: Background Remote Function Call is a mechanism in SAP for asynchronous communication, allowing for better performance and reliability in processing remote function calls.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM58 (for monitoring transactional RFC), SLG1 (for application logs), and SICF (for service configuration).
  Documentation: Review SAP documentation on bgRFC for a deeper understanding of its architecture and configuration.
  
  By following these steps, you should be able to diagnose and resolve the BGRFC021 error effectively.