How To Fix RT311 - Error getting list of active application servers from monitor segment

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 311

• Message text: Error getting list of active application servers from monitor segment

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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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT311 - Error getting list of active application servers from monitor segment ?

  The SAP error message RT311, which states "Error getting list of active application servers from monitor segment," typically indicates an issue with the SAP system's ability to retrieve information about active application servers. This can occur due to various reasons, including network issues, configuration problems, or issues with the SAP kernel.
  Causes:
  
  Network Issues: There may be connectivity problems between the SAP application server and the message server.
  Configuration Problems: Incorrect settings in the instance profile or the SAP system configuration can lead to this error.
  Message Server Issues: The message server may not be running or may be experiencing issues.
  Kernel Problems: An outdated or corrupted SAP kernel can cause communication issues.
  Load Balancing Issues: Problems with load balancing configurations can prevent the application server from being recognized.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that the application server can communicate with the message server. You can use tools like ping or telnet to check connectivity.
  Verify that there are no firewall rules blocking the communication.
  
  
  
  Review Configuration Settings:
  
  Check the instance profile settings for the application server and ensure that they are correctly configured.
  Verify the SAP Message Server settings in the SAP GUI or SAP Management Console.
  
  
  
  Restart the Message Server:
  
  If the message server is not running, restart it. You can do this through the SAP Management Console or by using command-line tools.
  
  
  
  Check SAP Kernel Version:
  
  Ensure that you are using a supported and up-to-date version of the SAP kernel. If necessary, apply the latest patches or updates.
  
  
  
  Review Load Balancing Configuration:
  
  If you are using a load balancer, ensure that it is correctly configured to route requests to the active application servers.
  
  
  
  Check SAP Notes:
  
  Look for relevant SAP Notes in the SAP Support Portal that may address this specific error. SAP frequently updates their knowledge base with solutions for known issues.
  
  
  
  System Logs:
  
  Check the system logs (transaction SM21) for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like SM51 (to view active servers) and SM12 (to check for locks) to gather more information about the system's status.
  SAP Community: Engaging with the SAP Community forums can also provide insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the RT311 error in your SAP environment.