How To Fix 6G158 - RFC connection & will be closed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 158

• Message text: RFC connection & will be closed

What causes this issue?

Timeout.
The RFC connection &V1& is closing.

System Response

If the RFC connection is not used for longer than 5 minutes, it is
closed automatically for performance reasons.
If you want to start a task in the remote system, the connection is
re-established.

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 6G158 - RFC connection & will be closed ?

  The SAP error message "6G158 RFC connection & will be closed" typically indicates that there is an issue with the Remote Function Call (RFC) connection between SAP systems. This error can occur for various reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Causes:
  
  
  Network Issues: Problems with the network connection between the SAP systems can lead to RFC connection failures. This could be due to firewalls, network outages, or misconfigured network settings.
  
  
  Timeout Settings: If the RFC connection is idle for too long, it may time out. This can happen if the timeout settings are not configured correctly.
  
  
  Resource Limitations: The SAP system may be running out of resources (e.g., memory, CPU) which can affect the ability to maintain RFC connections.
  
  
  Configuration Errors: Incorrect configuration of the RFC destination in the SAP system can lead to connection issues.
  
  
  System Load: High load on the SAP system can cause delays in processing requests, leading to timeouts and connection closures.
  
  
  Version Compatibility: Incompatibility between different SAP versions or components can also lead to RFC connection issues.
  
  
  Solutions:
  
  
  Check Network Connectivity: Ensure that there are no network issues between the systems. You can use tools like ping or traceroute to diagnose network problems.
  
  
  Review Timeout Settings: Check the timeout settings for the RFC connection. You can adjust the parameters in the RFC destination configuration (transaction SM59) to increase the timeout duration.
  
  
  Monitor System Resources: Use transaction SM50 or SM66 to monitor system performance and resource usage. If the system is under heavy load, consider optimizing performance or scaling resources.
  
  
  Verify RFC Destination Configuration: Go to transaction SM59 and check the configuration of the RFC destination. Ensure that all parameters are set correctly, including the target host, system number, and client.
  
  
  Check Logs: Review the system logs (transaction SM21) and the developer traces (transaction ST22) for any related error messages that could provide more context on the issue.
  
  
  Update SAP Components: Ensure that all relevant SAP components are up to date and compatible with each other. Check for any available patches or updates.
  
  
  Consult SAP Notes: Search the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59: RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  SM50/SM66: Process Overview
  
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  
  By following these steps, you should be able to identify the cause of the RFC connection issue and implement a suitable solution.