How To Fix ESH_QL_MSG012 - Query log aggregation already running, process is locked

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_QL_MSG - ESH Query Logging

• Message number: 012

• Message text: Query log aggregation already running, process is locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_QL_MSG012 - Query log aggregation already running, process is locked ?

  The SAP error message ESH_QL_MSG012 indicates that a query log aggregation process is already running, and as a result, the system has locked the process to prevent concurrent executions. This is a common issue in systems where query log aggregation is scheduled to run periodically, and it can occur if a previous aggregation process has not completed before a new one is triggered.
  Cause:
  
  Concurrent Execution: The most common cause is that the query log aggregation job is scheduled to run at intervals that overlap, leading to multiple instances trying to run simultaneously.
  Long-Running Processes: If the previous aggregation process takes longer than expected due to a large volume of data or system performance issues, it can lead to this error.
  System Locking Mechanism: SAP uses locking mechanisms to ensure data integrity, and if a process is still running, it will prevent another instance from starting.
  
  Solution:
  
  
  Check Running Processes: 
  
  Use transaction code SM37 to check for any running or stuck jobs related to query log aggregation. If you find a job that is still running, you may need to wait for it to complete or investigate why it is taking so long.
  
  
  
  Adjust Scheduling:
  
  If the aggregation job is scheduled to run too frequently, consider adjusting the schedule to allow more time between executions. This can help prevent overlap.
  
  
  
  Manual Execution:
  
  If you need to run the aggregation immediately and the previous job is stuck, you may need to terminate the running job (if it is safe to do so) and then manually start the aggregation process again.
  
  
  
  Monitor System Performance:
  
  Investigate system performance issues that may be causing the aggregation process to run longer than expected. This could involve checking for database locks, resource bottlenecks, or other performance-related issues.
  
  
  
  Review Logs:
  
  Check the application logs for any additional error messages or warnings that might provide more context about why the aggregation process is taking longer than expected.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM37: Job Monitoring
  SM21: System Log
  ST22: Dump Analysis
  SLG1: Application Log
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide patches related to query log aggregation.
  
  
  Documentation: Review the SAP Help Portal for documentation on query log aggregation and best practices for scheduling and monitoring jobs.
  
  
  By following these steps, you should be able to resolve the issue related to the ESH_QL_MSG012 error message and ensure that your query log aggregation processes run smoothly.