How To Fix D4634 - &1 is not an active application server

SAP Error Message - Details

• Message type: E = Error

• Message class: D4 - DB2/400 specific messages

• Message number: 634

• Message text: &1 is not an active application server

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

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.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message D4634 - &1 is not an active application server ?

  The SAP error message D4634 indicates that the specified application server is not active. This can occur for various reasons, and understanding the cause is essential for troubleshooting and resolving the issue. Here’s a breakdown of the potential causes, solutions, and related information:
  Causes:
  
  Server Down: The application server may be down or not started properly.
  Network Issues: There could be network connectivity issues preventing access to the application server.
  Configuration Issues: The server may not be correctly configured in the SAP system or in the instance profile.
  Load Balancer Issues: If a load balancer is used, it may not be routing requests to the correct server.
  SAP Instance Not Registered: The instance may not be registered in the SAP message server.
  
  Solutions:
  
  
  Check Server Status:
  
  Use transaction code SM51 to check the status of application servers. Ensure that the server you are trying to connect to is listed and active.
  If the server is down, you may need to start it using the appropriate command or through the SAP Management Console.
  
  
  
  Network Connectivity:
  
  Verify that there are no network issues preventing access to the application server. You can use tools like ping or traceroute to check connectivity.
  
  
  
  Review Configuration:
  
  Check the instance profile and ensure that the application server is correctly configured. Look for any discrepancies in the configuration files.
  Ensure that the server is correctly defined in the SAP system landscape.
  
  
  
  Load Balancer Configuration:
  
  If using a load balancer, ensure that it is correctly configured to route requests to the active application servers.
  
  
  
  Check SAP Message Server:
  
  Use transaction code SMLG to check the load balancing configuration and ensure that the application server is registered with the message server.
  If the server is not registered, you may need to restart the message server or check the instance configuration.
  
  
  
  Restart Services:
  
  If all else fails, consider restarting the SAP services on the application server or the entire SAP system.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. You can search for D4634 in the SAP Support Portal.
  Logs: Review the developer trace files (dev_* files) and system logs (transaction SM21) for any additional error messages or warnings that could provide more context.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the D4634 error and implement a solution to resolve it.