How To Fix ATO118 - Multiplexer did not progress for &1 seconds.

SAP Error Message - Details

• Message type: E = Error

• Message class: ATO - Adaptation Transport Organizer Messages

• Message number: 118

• Message text: Multiplexer did not progress for &1 seconds.

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 ATO118 - Multiplexer did not progress for &1 seconds. ?

  The SAP error message ATO118, which states "Multiplexer did not progress for &1 seconds," typically indicates that the SAP system's communication process is experiencing delays or hangs. This can occur in various scenarios, particularly in environments where multiple users are connected to the SAP system through a GUI or other interfaces.
  Causes:
  
  Network Issues: Poor network connectivity or high latency can cause delays in communication between the SAP GUI and the application server.
  Server Performance: If the application server is under heavy load or experiencing performance issues, it may not be able to process requests in a timely manner.
  Long-Running Transactions: Certain transactions may take longer to execute, causing the multiplexer to appear unresponsive.
  Configuration Issues: Incorrect configuration settings in the SAP system or network settings can lead to communication problems.
  Resource Contention: High CPU or memory usage on the server can lead to delays in processing requests.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the client and the server is stable. You can use tools like ping or traceroute to diagnose network issues.
  Monitor Server Performance: Use SAP transaction codes like ST03N (Workload Analysis) or SM66 (Global Work Process Overview) to monitor the performance of the application server and identify any bottlenecks.
  Review Long-Running Transactions: Identify any transactions that are taking an unusually long time to complete and investigate their performance.
  Adjust Configuration Settings: Review and adjust the configuration settings for the SAP system and network to optimize performance.
  Increase Timeout Settings: If necessary, consider increasing the timeout settings for the multiplexer in the SAP system configuration.
  Restart Services: In some cases, restarting the SAP services or the application server may resolve temporary issues.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the ATO118 error. SAP frequently updates its knowledge base with solutions for common problems.
  System Logs: Review system logs (transaction SM21) for any related error messages or warnings that could provide additional context for the issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have 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.