How To Fix CSM_ENSA012 - Internal error. Could not reach standalone enqueue

SAP Error Message - Details

• Message type: E = Error

• Message class: CSM_ENSA - Standalone Enqueue Monitoring

• Message number: 012

• Message text: Internal error. Could not reach standalone enqueue

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CSM_ENSA012 - Internal error. Could not reach standalone enqueue ?

  The SAP error message CSM_ENSA012 indicates an internal error related to the enqueue server, specifically that the system could not reach the standalone enqueue server. This error typically occurs in environments where the enqueue server is configured to run separately from the application server, which is common in high-availability setups.
  Causes:
  
  Network Issues: There may be network connectivity problems between the application server and the enqueue server.
  Enqueue Server Down: The standalone enqueue server may not be running or has crashed.
  Configuration Issues: Incorrect configuration settings in the SAP system that prevent the application server from connecting to the enqueue server.
  Firewall Restrictions: Firewalls or security settings may be blocking the necessary ports for communication between the application server and the enqueue server.
  Resource Limitations: The enqueue server may be overloaded or running out of resources (e.g., memory, CPU).
  
  Solutions:
  
  
  Check Enqueue Server Status:
  
  Ensure that the standalone enqueue server is running. You can check this using transaction SM51 to see the list of application servers and their statuses.
  If the enqueue server is down, restart it.
  
  
  
  Network Connectivity:
  
  Verify that there are no network issues between the application server and the enqueue server. You can use tools like ping or telnet to check connectivity.
  Ensure that the hostname and IP address of the enqueue server are correctly configured in the SAP system.
  
  
  
  Configuration Review:
  
  Check the configuration settings in the SAP system for the enqueue server. This includes parameters in the instance profile (e.g., enq/enable).
  Ensure that the enqueue server is correctly defined in the SAP system landscape.
  
  
  
  Firewall and Security Settings:
  
  Review firewall settings to ensure that the necessary ports for SAP communication (typically port 3200 for the enqueue server) are open.
  Check for any security policies that might restrict access between the application server and the enqueue server.
  
  
  
  Resource Monitoring:
  
  Monitor the resource usage on the enqueue server to ensure it is not overloaded. Use tools like operating system monitoring tools to check CPU and memory usage.
  If resource limitations are identified, consider scaling up the server or optimizing the workload.
  
  
  
  SAP Notes and Support:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  If the issue persists, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM51: To check the status of application servers.
  SM12: To view and manage locks.
  SM21: To check system logs for any related error messages.
  
  
  
  Documentation: Review SAP documentation related to enqueue server configuration and troubleshooting.
  
  
  By following these steps, you should be able to diagnose and resolve the CSM_ENSA012 error effectively.