How To Fix QEHH020 - System error in lock management

SAP Error Message - Details

• Message type: E = Error

• Message class: QEHH - QM Handheld

• Message number: 020

• Message text: System error in lock management

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 QEHH020 - System error in lock management ?

  The SAP error message QEHH020 indicates a system error in lock management. This error typically occurs when there is an issue with the locking mechanism in the SAP system, which is responsible for ensuring data consistency during concurrent access by multiple users or processes.
  Causes of QEHH020
  
  Database Lock Issues: The error may arise due to problems with database locks, such as deadlocks or lock timeouts.
  System Resource Limitations: Insufficient system resources (like memory or CPU) can lead to issues in managing locks.
  Configuration Issues: Incorrect configuration settings in the SAP system or database can lead to lock management errors.
  Transport Issues: If there are issues with transport requests or changes being moved between systems, it can cause inconsistencies in lock management.
  Software Bugs: There may be bugs in the SAP software or specific patches that need to be applied.
  
  Solutions to QEHH020
  
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. You can delete any unnecessary locks that may be causing the issue.
  Review System Logs: Check the system logs (transaction code SM21) for any related error messages that could provide more context about the issue.
  Monitor System Performance: Use transaction codes like ST22 (dump analysis) and SM37 (job monitoring) to identify any performance issues or dumps that may be related to the error.
  Restart the Application Server: Sometimes, restarting the application server can resolve temporary lock management issues.
  Database Administration: If the issue persists, consult with your database administrator to check for any database-level issues or locks that may need to be resolved.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. Applying the latest patches or updates may resolve the issue.
  Contact SAP Support: If the problem continues after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  Related Information
  
  
  Transaction Codes:
  
  SM12: Display and manage lock entries.
  SM21: System log analysis.
  ST22: Dump analysis.
  SM37: Job monitoring.
  
  
  
  SAP Notes: Regularly check for updates and patches related to lock management issues in the SAP Support Portal.
  
  
  Documentation: Review SAP documentation related to lock management and database performance tuning for best practices.
  
  
  By following these steps, you should be able to diagnose and resolve the QEHH020 error effectively.