How To Fix 6G159 - Close RFC connection

SAP Error Message - Details

• Message type: E = Error

• Message class: 6G - Messages for System Administration Assistant

• Message number: 159

• Message text: Close RFC connection

What causes this issue?

For performance reasons, alerts are only displayed for the current
system.

System Response

All open RFC connections to remote systems are closed.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 6G159 - Close RFC connection ?

  The SAP error message 6G159 typically indicates an issue with closing an RFC (Remote Function Call) connection. This error can arise due to various reasons, including network issues, configuration problems, or issues with the SAP system itself.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP systems can lead to difficulties in closing RFC connections.
  Timeouts: If the RFC connection times out, it may not close properly, leading to this error.
  Configuration Errors: Incorrect settings in the RFC destination configuration can cause issues when trying to close connections.
  System Performance: High load on the SAP system or the server can lead to delays or failures in closing connections.
  Resource Limitations: If the system is running out of resources (like memory or CPU), it may not be able to handle closing connections properly.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the systems involved. You can use tools like ping or traceroute to diagnose connectivity problems.
  Review RFC Destination Configuration: Go to transaction SM59 and check the configuration of the RFC destination. Ensure that all settings are correct and that the destination is reachable.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the RFC destination configuration.
  Monitor System Performance: Use transaction ST03N or SM66 to monitor system performance and check for any bottlenecks or resource issues.
  Check for Open Connections: Use transaction SM04 to check for open connections and see if there are any that are not being closed properly.
  Restart the SAP System: If the issue persists and is affecting multiple users, consider restarting the SAP system to clear any stuck processes or connections.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP frequently updates its knowledge base with solutions and workarounds for common problems.
  Logs and Traces: Review system logs (transaction SM21) and traces (transaction ST01) for any additional error messages or warnings that could provide more context about the issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.