How To Fix SODQ121 - Delta extraction locked by request &1. Only this request can be repeated

SAP Error Message - Details

• Message type: E = Error

• Message class: SODQ - Operational Delta Queue

• Message number: 121

• Message text: Delta extraction locked by request &1. Only this request can be repeated

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SODQ121 - Delta extraction locked by request &1. Only this request can be repeated ?

  The SAP error message SODQ121 indicates that a delta extraction process is locked by a specific request, and only that request can be repeated. This typically occurs in the context of data extraction from SAP systems, particularly when using SAP Data Warehousing solutions like SAP BW (Business Warehouse) or SAP HANA.
  Cause:
  
  Delta Queue Lock: The delta queue for the data source is locked by a specific request. This can happen if a previous delta extraction is still in progress or has not been completed successfully.
  Request Status: The request that is locking the delta queue may be in a status that prevents other requests from being processed (e.g., it may be in a "processing" or "error" state).
  Concurrency Issues: Multiple processes trying to access the same delta queue simultaneously can lead to locking issues.
  
  Solution:
  
  Check the Request Status: Use transaction codes like RSA1 (Data Warehousing Workbench) or SM37 (Job Monitoring) to check the status of the request that is locking the delta queue. If it is still running, you may need to wait for it to complete.
  Repeat the Request: If the request has failed or is in an error state, you can try to repeat that specific request. This can often resolve the issue.
  Unlock the Delta Queue: If the request is stuck and cannot be completed, you may need to manually unlock the delta queue. This can be done by:
  
  Deleting the request if it is not needed.
  Using transaction SMQ1 (for outbound queues) or SMQ2 (for inbound queues) to check for any stuck queues and resolve them.
  
  
  Check for Errors: Review the logs for any errors that may have occurred during the extraction process. This can provide insights into why the request is locked.
  Consult Documentation: Refer to SAP documentation or support notes related to delta extraction and the specific data source you are working with for additional troubleshooting steps.
  
  Related Information:
  
  Delta Extraction: Delta extraction is a method used to extract only the changes (new or modified records) from a source system since the last extraction. This is more efficient than full data extraction.
  Data Sources: Different data sources may have specific configurations and behaviors regarding delta extraction. Ensure that you are familiar with the data source you are working with.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message SODQ121. SAP frequently updates its knowledge base with solutions to common problems.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further assistance.