How To Fix RZ553 - Enqueue qu.

SAP Error Message - Details

• Message type: E = Error

• Message class: RZ - Messages for Computing Center Management System

• Message number: 553

• Message text: Enqueue qu.

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 RZ553 - Enqueue qu. ?

  The SAP error message RZ553, which refers to "Enqueue queue," typically indicates an issue related to the enqueue mechanism in SAP. This mechanism is responsible for managing locks on objects in the SAP system to ensure data consistency and integrity during concurrent access.
  Cause:
  The RZ553 error can occur due to several reasons, including:
  
  Lock Table Overflow: The enqueue lock table may be full, which means that no more locks can be acquired.
  Long-Running Transactions: A transaction may be holding locks for an extended period, preventing other transactions from acquiring necessary locks.
  System Configuration Issues: Incorrect configuration settings for the enqueue server or the overall SAP system can lead to this error.
  Network Issues: Problems with network connectivity between application servers and the enqueue server can also cause this error.
  Database Issues: If the underlying database has issues, it may affect the enqueue mechanism.
  
  Solution:
  To resolve the RZ553 error, you can take the following steps:
  
  
  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 profile parameters (e.g., enque/table_size).
  
  
  
  Release Unnecessary Locks:
  
  In SM12, you can identify and delete unnecessary locks held by users or processes that are no longer active.
  
  
  
  Monitor Long-Running Transactions:
  
  Use transaction SM66 or SM50 to monitor active processes and identify any long-running transactions that may be holding locks. If necessary, terminate these processes.
  
  
  
  Check System Configuration:
  
  Review the configuration of the enqueue server and ensure that it is set up correctly. Check the instance profile parameters related to enqueue.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction SM21) for any related error messages that might provide additional context for the issue.
  
  
  
  Network and Database Checks:
  
  Ensure that there are no network issues affecting communication between application servers and the enqueue server. Also, check the database for any performance issues.
  
  
  
  Restart Enqueue Server:
  
  If the issue persists, consider restarting the enqueue server. This can sometimes clear up transient issues.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM21: System log.
  SM50: Process overview.
  SM66: Global process overview.
  
  
  
  SAP Notes: Check SAP Notes related to enqueue issues for specific patches or updates that may address known problems.
  
  
  Documentation: Refer to SAP Help documentation for detailed information on enqueue mechanisms and troubleshooting steps.
  
  
  If the problem continues after trying these solutions, it may be necessary to contact SAP support for further assistance.