How To Fix CNV_00001348 - Parallel update jobs if there are more than &1 cluster blocks

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_00001 - Message class for CWB settings maintenance programs

• Message number: 348

• Message text: Parallel update jobs if there are more than &1 cluster blocks

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_00001348 - Parallel update jobs if there are more than &1 cluster blocks ?

  The SAP error message CNV_00001348 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there are too many cluster blocks being processed in parallel, which can lead to performance issues or system resource constraints.
  Cause:
  The error message CNV_00001348 is triggered when the number of cluster blocks exceeds a predefined limit during a parallel update job. This can happen due to:
  
  High Volume of Data: When migrating or converting a large volume of data, the number of cluster blocks being processed in parallel may exceed the system's capacity.
  Configuration Settings: The system may be configured to allow a certain number of parallel jobs, and if the data being processed exceeds this limit, the error will occur.
  Resource Limitations: The underlying database or application server may not have sufficient resources (CPU, memory, etc.) to handle the number of parallel jobs being requested.
  
  Solution:
  To resolve the error CNV_00001348, consider the following approaches:
  
  
  Adjust Parallel Processing Settings:
  
  Review and adjust the settings for parallel processing in the migration or conversion tool. This may involve reducing the number of parallel jobs to a level that the system can handle.
  Check the configuration parameters related to parallel processing in the SAP system (e.g., rdisp/wp_no_btc for background work processes).
  
  
  
  Optimize Data Volume:
  
  If possible, reduce the volume of data being processed in a single job. This can be done by splitting the data into smaller batches or processing it in stages.
  
  
  
  Monitor System Resources:
  
  Monitor the system's performance and resource utilization during the migration process. Ensure that there are enough resources available to handle the workload.
  Consider increasing the hardware resources (CPU, memory) if the system is consistently under heavy load.
  
  
  
  Check for Locks or Conflicts:
  
  Ensure that there are no locks or conflicts in the database that could be causing delays or issues with processing the cluster blocks.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes or documentation that may provide additional guidance or patches related to this error.
  
  
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SM37 to monitor background jobs and ST22 to check for dumps that may provide more context on the error.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with the error details and any relevant logs.
  Documentation: Review the official SAP documentation for the migration tool you are using, as it may contain specific recommendations for handling parallel processing and performance tuning.
  
  By following these steps, you should be able to address the error CNV_00001348 and successfully complete your data migration or conversion process.