How To Fix KM062 - Max. number of program locks for background processing has been reached

SAP Error Message - Details

• Message type: E = Error

• Message class: KM - Error messages for Profit Center Accounting

• Message number: 062

• Message text: Max. number of program locks for background processing has been reached

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message KM062 - Max. number of program locks for background processing has been reached ?

  The SAP error message KM062, which states "Max. number of program locks for background processing has been reached," typically occurs when the maximum number of program locks for background processing has been exceeded. This can happen in scenarios where multiple background jobs are trying to acquire locks on the same resources, leading to contention and ultimately reaching the limit set by the system.
  Cause:
  
  Excessive Background Jobs: Too many background jobs are running simultaneously, each trying to acquire locks on the same resources.
  Lock Table Size: The lock table size may be insufficient for the number of concurrent locks being requested.
  Long-Running Jobs: Background jobs that take a long time to complete can hold locks for extended periods, preventing new jobs from acquiring the necessary locks.
  Configuration Issues: The system may not be optimally configured to handle the expected load of background processing.
  
  Solution:
  
  
  Increase Lock Table Size:
  
  You can increase the size of the lock table in the SAP system. This is done by adjusting the parameter enque/table_size in the instance profile. After making changes, you will need to restart the instance for the changes to take effect.
  
  
  
  Monitor and Optimize Background Jobs:
  
  Review the background jobs that are currently running. Identify any long-running jobs and optimize them if possible.
  Schedule jobs to run at different times to reduce contention for locks.
  
  
  
  Check for Job Failures:
  
  Ensure that there are no failed jobs that are holding locks. If a job fails, it may not release its locks properly.
  
  
  
  Use Transaction SM12:
  
  Use transaction SM12 to monitor and manage locks. You can see which locks are currently held and by which users or jobs. If necessary, you can delete locks that are no longer needed.
  
  
  
  Adjust Job Scheduling:
  
  If you have control over job scheduling, consider staggering the execution of jobs to avoid peak contention times.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may provide additional guidance or patches related to this issue.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM37: To monitor background jobs.
  SM21: To check system logs for any related errors or warnings.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for more details on lock management and background processing.
  
  
  Performance Monitoring: Regularly monitor system performance and background job execution to proactively manage locks and prevent this error from occurring in the future.
  
  
  By following these steps, you should be able to resolve the KM062 error and improve the handling of background processing in your SAP system.