How To Fix CNV667 - Scheduling of parallel update jobs failed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 667

• Message text: Scheduling of parallel update jobs failed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV667 - Scheduling of parallel update jobs failed ?

  The SAP error message "CNV667 Scheduling of parallel update jobs failed" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system was unable to schedule the necessary parallel update jobs for the data migration process.
  Causes:
  
  System Resource Limitations: The system may not have enough resources (CPU, memory, etc.) to handle the parallel jobs.
  Job Scheduling Conflicts: There may be existing jobs in the queue that are blocking the scheduling of new jobs.
  Configuration Issues: Incorrect configuration settings in the job scheduling parameters or in the migration cockpit.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to schedule jobs.
  Database Locks: Locks on database tables that are being updated can prevent new jobs from being scheduled.
  
  Solutions:
  
  Check System Resources: Monitor the system's performance and resource usage. If resources are low, consider increasing them or scheduling the migration during off-peak hours.
  Review Job Queue: Check the job scheduling queue for any long-running or stuck jobs. Cancel or reschedule them if necessary.
  Adjust Configuration: Review the configuration settings for the migration process. Ensure that the parameters for parallel processing are set correctly.
  User Authorizations: Verify that the user has the necessary authorizations to schedule and execute jobs. Adjust roles and permissions if needed.
  Database Locks: Use transaction codes like SM12 to check for locks on the relevant database tables. If locks are found, investigate and resolve them.
  Increase Parallel Processing Limits: If applicable, consider increasing the limits for parallel processing in the system settings.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SM37 (Job Monitoring), SM12 (Lock Entries), and ST22 (Dump Analysis) to diagnose and monitor job statuses and system performance.
  SAP Notes: Check for relevant SAP Notes that may address specific issues related to this error message. SAP Notes often provide patches or workarounds.
  Documentation: Review the official SAP documentation for the migration tool you are using, as it may provide additional insights into configuration and troubleshooting.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with SAP support or your system administrator for further assistance.