How To Fix SQ076 - Queue & error occurred in enqueue

SAP Error Message - Details

• Message type: E = Error

• Message class: SQ - Queue Administration Transaction: Error Texts

• Message number: 076

• Message text: Queue & error occurred in 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.

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 SQ076 - Queue & error occurred in enqueue ?

  The SAP error message SQ076 indicates that there is an issue with the enqueue mechanism in the SAP system. This error typically occurs when there is a problem with the lock management system, which is responsible for managing access to shared resources in the database. Here are some common causes, potential solutions, and related information for this error:
  Causes:
  
  Lock Table Overflow: The enqueue lock table may be full, which means that no more locks can be acquired.
  Database Issues: There may be underlying database issues that are affecting the enqueue service.
  Network Issues: Network problems can lead to communication failures between the application server and the enqueue server.
  Configuration Issues: Incorrect configuration settings in the SAP system can lead to enqueue errors.
  System Load: High system load or performance issues can cause delays in lock acquisition.
  
  Solutions:
  
  
  Check Lock Table Size:
  
  Use transaction code SM12 to check for existing locks. If the lock table is full, you may need to increase its size in the system configuration.
  
  
  
  Release Unused Locks:
  
  In transaction SM12, you can also delete unnecessary locks that are no longer needed. Be cautious when doing this, as it may affect other users.
  
  
  
  Monitor System Performance:
  
  Use transaction ST02 (Tune Summary) to monitor memory and performance issues. If the system is under heavy load, consider optimizing performance or scaling resources.
  
  
  
  Check Enqueue Server:
  
  Ensure that the enqueue server is running properly. You can check the status of the enqueue server in transaction SM51 (List of SAP Servers).
  
  
  
  Review Configuration:
  
  Check the configuration settings related to the enqueue service in transaction RZ10 or RZ11. Ensure that parameters like enque/table_size are set appropriately.
  
  
  
  Restart Enqueue Server:
  
  If the issue persists, consider restarting the enqueue server. This can sometimes resolve transient issues.
  
  
  
  Check for Network Issues:
  
  Ensure that there are no network connectivity issues between the application server and the database server.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to enqueue errors.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM51: Monitor SAP application servers.
  ST02: Tune summary for performance monitoring.
  RZ10/RZ11: Profile parameters and settings.
  
  
  
  SAP Support: If the issue cannot be resolved with the above steps, consider reaching out to SAP Support for further assistance.
  
  
  Documentation: Review SAP documentation for more detailed information on enqueue management and troubleshooting.
  
  
  By following these steps, you should be able to diagnose and resolve the SQ076 error in your SAP system.