How To Fix ATO117 - Multiplexer did not start after &1 seconds.

SAP Error Message - Details

• Message type: E = Error

• Message class: ATO - Adaptation Transport Organizer Messages

• Message number: 117

• Message text: Multiplexer did not start after &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 ATO117 - Multiplexer did not start after &1 seconds. ?

  The SAP error message ATO117 indicates that the multiplexer did not start within the expected time frame (in this case, after a specified number of seconds). This can occur in various scenarios, particularly when dealing with SAP GUI connections or when the SAP system is trying to establish a connection to a database or application server.
  Causes:
  
  Network Issues: There may be network connectivity problems between the client and the SAP server.
  Server Overload: The SAP server may be overloaded or experiencing high traffic, causing delays in starting the multiplexer.
  Configuration Issues: Incorrect configuration settings in the SAP system or the multiplexer itself can lead to startup failures.
  Resource Limitations: Insufficient system resources (CPU, memory) on the server can prevent the multiplexer from starting.
  Firewall or Security Settings: Firewalls or security settings may be blocking the necessary ports for the multiplexer to start.
  Software Bugs: There may be bugs in the SAP software or the operating system that affect the multiplexer.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the client and the SAP server. You can use tools like ping or traceroute to diagnose connectivity.
  Monitor Server Performance: Check the performance of the SAP server to see if it is overloaded. You can use transaction codes like SM50 or SM66 to monitor active processes.
  Review Configuration Settings: Verify the configuration settings for the multiplexer in the SAP system. Ensure that all parameters are set correctly.
  Increase Resource Allocation: If the server is under heavy load, consider increasing the resources (CPU, memory) allocated to the SAP system.
  Check Firewall Settings: Ensure that the necessary ports for the multiplexer are open and not being blocked by a firewall.
  Review Logs: Check the SAP system logs (transaction SM21) and the multiplexer logs for any error messages that could provide more insight into the issue.
  Restart the Multiplexer: If the multiplexer is stuck, you may need to restart it. This can often resolve temporary issues.
  Update Software: Ensure that you are running the latest version of the SAP software and apply any relevant patches that may address known issues.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to the ATO117 error message. SAP frequently updates their knowledge base with solutions and workarounds.
  SAP Community: Engage with the SAP Community forums to see if other users have experienced similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for the multiplexer and related components to ensure proper configuration and usage.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.