How To Fix TQ239 - Logging off from SAP System RFC

SAP Error Message - Details

• Message type: E = Error

• Message class: TQ - SAPup Messages

• Message number: 239

• Message text: Logging off from SAP System RFC

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message TQ239 - Logging off from SAP System RFC ?

  The SAP error message TQ239, which indicates "Logging off from SAP System RFC," typically occurs in the context of Remote Function Call (RFC) communications between SAP systems or between an SAP system and an external system. This error can arise due to various reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Causes of TQ239 Error
  
  
  Network Issues: Connectivity problems between the SAP systems or between an SAP system and an external system can lead to this error. This includes issues like network outages, firewall restrictions, or incorrect network configurations.
  
  
  Timeouts: If the RFC connection times out due to inactivity or long-running processes, the system may log off the session, resulting in this error.
  
  
  Configuration Issues: Incorrect settings in the RFC destination configuration (transaction code SM59) can lead to communication failures. This includes incorrect user credentials, incorrect target host or service settings, or missing authorizations.
  
  
  System Load: High load on the SAP system can cause performance issues, leading to timeouts or disconnections.
  
  
  SAP Kernel or Software Bugs: Occasionally, bugs in the SAP kernel or related software components can cause unexpected disconnections.
  
  
  Solutions to TQ239 Error
  
  
  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 the connection parameters (like target host, service, and user credentials) are correct.
  Test the connection using the "Connection Test" feature in SM59.
  
  
  
  Increase Timeout Settings: If timeouts are a frequent issue, consider increasing the timeout settings in the RFC destination configuration.
  
  
  Monitor System Performance: Use transaction SM37 to check for long-running jobs that might be causing system load. If necessary, optimize or schedule these jobs during off-peak hours.
  
  
  Check SAP Notes: Look for relevant SAP Notes that might address known issues related to the TQ239 error. SAP frequently releases updates and patches that can resolve bugs.
  
  
  Review System Logs: Check the system logs (transaction SM21) for any additional error messages or warnings that might provide more context about the disconnection.
  
  
  Consult with Basis Team: If the issue persists, it may be necessary to involve your SAP Basis team or support for further investigation, especially if it involves system configuration or performance tuning.
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destination Configuration
  SM21: System Log
  SM37: Job Monitoring
  ST22: Dump Analysis
  
  
  
  SAP Notes: Always check the SAP Support Portal for the latest notes related to RFC issues and the specific error message.
  
  
  Documentation: Refer to SAP Help documentation for detailed information on RFC and troubleshooting connectivity issues.
  
  
  By following these steps, you should be able to identify and resolve the underlying cause of the TQ239 error in your SAP environment.