How To Fix C_328 - Start of delta queues failed - processing stopped

SAP Error Message - Details

• Message type: E = Error

• Message class: C_ - CRM Integration Messages

• Message number: 328

• Message text: Start of delta queues failed - processing stopped

Self-Explanatory Message

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• What is the cause and solution for SAP error message C_328 - Start of delta queues failed - processing stopped ?

  The SAP error message C_328, which indicates that the "Start of delta queues failed - processing stopped," typically occurs in the context of SAP Data Warehousing or SAP BW (Business Warehouse) when there are issues with the delta queue processing. This error can prevent data from being extracted and loaded into the data warehouse, which can impact reporting and analytics.
  Causes:
  
  Technical Issues: There may be underlying technical issues with the delta queue, such as corruption or misconfiguration.
  Locking Issues: If there are locks on the delta queue or related tables, it can prevent the delta process from starting.
  Data Consistency: Inconsistencies in the data or issues with the source system can lead to failures in the delta queue.
  System Performance: High system load or performance issues can also cause the delta queue to fail to start.
  Transport Issues: If there have been recent transports or changes in the system, they may have affected the delta queue configuration.
  
  Solutions:
  
  Check Delta Queue Status: Use transaction codes like SMQ1 (for outbound queues) and SMQ2 (for inbound queues) to check the status of the delta queues. Look for any stuck or failed entries.
  Reprocess the Queue: If there are entries in the queue that are causing issues, you may need to delete or reprocess them. This can often be done through the same transaction codes mentioned above.
  Check for Locks: Use transaction SM12 to check for any locks on the relevant tables. If locks are found, they may need to be released.
  Monitor System Performance: Check system performance metrics to ensure that the system is not overloaded. If necessary, optimize performance or schedule data loads during off-peak hours.
  Review Logs: Check the application logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the failure.
  Restart the Process: Sometimes, simply restarting the delta process can resolve transient issues.
  Consult SAP Notes: Look for relevant SAP Notes that may address known issues related to delta queues. SAP Notes can provide patches or workarounds for specific problems.
  System Configuration: Ensure that the configuration for the delta queue is correct and that all necessary settings are in place.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA7 (for monitoring delta queues), SMQ1, SMQ2, and SLG1.
  SAP BW Documentation: Review SAP BW documentation for best practices on managing delta queues and troubleshooting common issues.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation and resolution.