How To Fix MLT606 - A statistics update is already running

SAP Error Message - Details

• Message type: E = Error

• Message class: MLT - Messages for Translation Tools

• Message number: 606

• Message text: A statistics update is already running

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MLT606 - A statistics update is already running ?

  The SAP error message MLT606, which states "A statistics update is already running," typically occurs when there is an attempt to start a statistics update process while another instance of the same process is already in progress. This can happen in various SAP modules, particularly in logistics and inventory management, where statistics updates are crucial for performance and reporting.
  Cause:
  
  Concurrent Execution: The most common cause is that a statistics update job is already running in the background. This can happen if the job was triggered manually or scheduled to run at a specific time.
  Long-Running Jobs: If a previous statistics update job is taking longer than expected due to large volumes of data or system performance issues, it may block subsequent attempts to start another update.
  System Configuration: In some cases, system settings or configurations may lead to multiple attempts to start the same job.
  
  Solution:
  
  Check Running Jobs: Use transaction codes like SM37 to check for any running background jobs. Look for jobs related to statistics updates and see if they are still active.
  Wait for Completion: If a statistics update is currently running, you may need to wait for it to complete before starting another one.
  Terminate Stuck Jobs: If you find that a job is stuck or taking too long, you can terminate it from the SM37 transaction. Be cautious when doing this, as it may lead to data inconsistencies if the job was in the middle of processing.
  Schedule Jobs Appropriately: If this error occurs frequently, consider scheduling statistics updates during off-peak hours to minimize the chances of overlap.
  Review Job Scheduling: Ensure that your job scheduling does not overlap with other critical processes that may also require statistics updates.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM37 (Job Monitoring), SM21 (System Log), and ST22 (Dump Analysis) for troubleshooting.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Performance Monitoring: Regularly monitor system performance and job execution times to identify any bottlenecks that may lead to this error.
  Documentation: Review SAP documentation related to statistics updates for your specific module to understand the best practices and configurations.
  
  By following these steps, you should be able to resolve the MLT606 error and ensure that your statistics updates run smoothly.