How To Fix PF064 - Error when determining the active servers

SAP Error Message - Details

• Message type: E = Error

• Message class: PF - System parametrization messages in Computing Ctr Mgmt System

• Message number: 064

• Message text: Error when determining the active servers

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 PF064 - Error when determining the active servers ?

  The SAP error message PF064 typically indicates an issue with the system's ability to determine the active servers in a distributed environment, such as when using SAP's Central Instance and Application Servers. This error can arise due to various reasons, including configuration issues, network problems, or issues with the SAP kernel.
  Causes of PF064 Error
  
  
  Network Issues: Problems with network connectivity between the Central Instance and Application Servers can lead to this error. This could be due to firewalls, routing issues, or DNS problems.
  
  
  Configuration Errors: Incorrect settings in the SAP profile parameters or in the instance configuration can prevent the system from correctly identifying active servers.
  
  
  SAP Kernel Issues: An outdated or corrupted SAP kernel can cause communication problems between instances.
  
  
  Load Balancer Issues: If you are using a load balancer, misconfigurations can lead to the inability to determine active servers.
  
  
  Instance Not Running: If the application server instance is not running or has crashed, the central instance will not be able to detect it.
  
  
  Solutions to PF064 Error
  
  
  Check Network Connectivity:
  
  Ensure that all servers can communicate with each other. Use tools like ping or traceroute to verify connectivity.
  Check firewall settings to ensure that the necessary ports are open.
  
  
  
  Review Configuration Settings:
  
  Check the instance profile parameters in the SAP system. Ensure that parameters like rdisp/mshost, rdisp/msserv, and rdisp/mspass are correctly configured.
  Verify that the SAP message server is running and properly configured.
  
  
  
  Update SAP Kernel:
  
  If the kernel is outdated, consider updating it to the latest version. This can resolve compatibility issues and bugs.
  
  
  
  Check Load Balancer Configuration:
  
  If using a load balancer, ensure that it is correctly configured to route traffic to the active application servers.
  
  
  
  Restart Instances:
  
  If an instance is not running, try restarting it. Check the logs for any errors that might indicate why it failed to start.
  
  
  
  Check SAP Logs:
  
  Review the developer traces (dev_* files) and system logs (SM21) for any additional error messages that could provide more context about the issue.
  
  
  
  SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that might address this specific error. SAP frequently updates their knowledge base with solutions for known issues.
  
  
  
  Related Information
  
  Transaction Codes: You can use transaction codes like SM51 to view the list of application servers and their statuses.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed logs and error messages.
  Documentation: Refer to the official SAP documentation for your specific version to understand the configuration and troubleshooting steps better.
  
  By following these steps, you should be able to diagnose and resolve the PF064 error in your SAP environment.