How To Fix RSM1166 - Delta queue deleted in OLTP

SAP Error Message - Details

• Message type: E = Error

• Message class: RSM1 - Messages for AWB, Scheduler and Monitor (new)

• Message number: 166

• Message text: Delta queue deleted in OLTP

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSM1166 - Delta queue deleted in OLTP ?

  The SAP error message RSM1166, which states "Delta queue deleted in OLTP," typically occurs in the context of SAP's data extraction processes, particularly when using the SAP Business Warehouse (BW) system. This error indicates that the delta queue for a specific data source has been deleted in the Online Transaction Processing (OLTP) system, which can disrupt the data extraction process.
  Cause:
  
  Manual Deletion: The delta queue may have been manually deleted by an administrator or during a maintenance operation.
  Data Source Configuration Changes: Changes in the configuration of the data source in the OLTP system can lead to the deletion of the delta queue.
  System Errors: System errors or inconsistencies in the OLTP system can also result in the delta queue being deleted.
  Data Transfer Issues: If there are issues with the data transfer process, it may lead to the delta queue being cleared or deleted.
  
  Solution:
  
  
  Reinitialize the Delta Queue:
  
  You may need to reinitialize the delta queue for the affected data source. This can be done by:
  
  Going to the DataSource in the SAP BW system.
  Selecting the option to "Initialize" the delta queue.
  This process will create a new delta queue and allow for data extraction to resume.
  
  
  
  
  
  Check for Manual Deletions:
  
  Investigate if there were any manual deletions or changes made to the delta queue. If so, ensure that proper procedures are followed to avoid such issues in the future.
  
  
  
  Monitor Data Source Configuration:
  
  Review the configuration of the data source in the OLTP system to ensure that it is set up correctly and that no changes have inadvertently led to the deletion of the delta queue.
  
  
  
  Check for System Errors:
  
  Look into system logs and error messages in both the OLTP and BW systems to identify any underlying issues that may have caused the delta queue to be deleted.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  
  
  Re-run Data Extraction:
  
  After reinitializing the delta queue, re-run the data extraction process to ensure that data is being captured correctly.
  
  
  
  Related Information:
  
  Delta Queue: The delta queue is a temporary storage area in the OLTP system that holds changes (inserts, updates, deletes) made to the data since the last extraction. It is crucial for efficient data transfer to the BW system.
  DataSource: A DataSource in SAP BW defines the structure of the data that is extracted from the OLTP system.
  Monitoring Tools: Use transaction codes like RSA1 (Data Warehousing Workbench) and RSMO (Monitor Delta Queue) to monitor and manage data extraction processes.
  
  If the problem persists after following these steps, it may be necessary to engage SAP support for further assistance.