How To Fix RSD_TREX066 - Delta index with main index '&1' combined. Runtime (sec.) '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: RSD_TREX - Messages from TREX Aggregate Area

• Message number: 066

• Message text: Delta index with main index '&1' combined. Runtime (sec.) '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSD_TREX066 - Delta index with main index '&1' combined. Runtime (sec.) '&2' ?

  The SAP error message RSD_TREX066 typically relates to issues encountered during the delta indexing process in SAP BW (Business Warehouse) when using the TREX search engine. This error indicates that there is a problem with the delta index being combined with the main index, and it provides runtime information that can help diagnose the issue.
  Cause:
  
  Delta Index Issues: The delta index may not be properly updated or may be corrupted. This can happen due to various reasons, such as system crashes, network issues, or data inconsistencies.
  Main Index Problems: If the main index is not in a healthy state, it can affect the delta indexing process. This could be due to previous failed updates or inconsistencies in the data.
  Performance Issues: The runtime indicated in the error message may suggest that the process is taking longer than expected, which could be due to system performance issues, large volumes of data, or resource constraints.
  Configuration Issues: Incorrect configuration settings for the indexing process or TREX settings can also lead to this error.
  
  Solution:
  
  Check Delta Queue: Ensure that the delta queue is not full and that there are no stuck requests. You can use transaction codes like RSA7 to monitor the delta queue.
  Rebuild Indexes: If the delta index or main index is suspected to be corrupted, consider rebuilding the indexes. This can be done through the relevant transaction codes in SAP BW.
  Monitor System Performance: Check system performance metrics to identify any bottlenecks. Ensure that the system has adequate resources (CPU, memory, etc.) to handle the indexing process.
  Check Logs: Review the logs for any additional error messages or warnings that could provide more context about the issue. Use transaction SLG1 to check application logs.
  Update Statistics: Sometimes, updating the statistics for the InfoProvider can help resolve indexing issues. This can be done through the relevant transaction codes.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSD1 (InfoObject Maintenance), and RSCUSTV10 (Customizing for BW).
  TREX Administration: If you are using TREX, ensure that it is properly configured and maintained. You may need to consult the TREX documentation for specific configuration settings.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to involve SAP support for further assistance.