How To Fix RSD_TREX115 - Index of table '&1' may be able to be deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: RSD_TREX - Messages from TREX Aggregate Area

• Message number: 115

• Message text: Index of table '&1' may be able to be deleted

What causes this issue?

The index for the table is no longer needed. It can thus most likely be
deleted. However, a where-used list will be created beforehand and only
when this shows that no other InfoCube needs this index will it be
deleted.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSD_TREX115 - Index of table '&1' may be able to be deleted ?

  The SAP error message RSD_TREX115 indicates that the index of a specific table may be eligible for deletion. This typically occurs in the context of SAP BW (Business Warehouse) and its interaction with the TREX search engine, which is used for text indexing and searching.
  Cause:
  The error message usually arises due to one of the following reasons:
  
  Unused Index: The index for the specified table is not being used or is outdated, which means it can be safely deleted to free up resources.
  Data Model Changes: Changes in the data model or the underlying data sources may render the index obsolete.
  Performance Optimization: SAP may suggest deleting the index as part of performance optimization efforts, especially if the index is not contributing to query performance.
  
  Solution:
  To resolve the RSD_TREX115 error, you can take the following steps:
  
  
  Check Index Usage:
  
  Verify if the index is being used by any queries or reports. If it is not being used, it can be deleted.
  Use transaction codes like RSRT (Query Monitor) to check if the index is referenced in any active queries.
  
  
  
  Delete the Index:
  
  If you confirm that the index is not needed, you can delete it. This can typically be done through the Data Warehousing Workbench (transaction RSA1).
  Navigate to the relevant InfoProvider, right-click on the index, and select the option to delete it.
  
  
  
  Rebuild Index:
  
  If you suspect that the index is outdated but still needed, consider rebuilding it. This can be done through the same interface where you manage the index.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific version of SAP BW you are using for any additional recommendations or best practices regarding index management.
  
  
  
  Monitor Performance:
  
  After deleting or rebuilding the index, monitor the performance of your queries to ensure that the changes have had the desired effect.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSRT (Query Monitor), and RSD1 (InfoObject Maintenance).
  SAP Notes: Check for any SAP Notes that may provide additional insights or updates related to this error message.
  System Logs: Review system logs for any additional error messages or warnings that may provide context for the issue.
  
  By following these steps, you should be able to address the RSD_TREX115 error effectively. If the issue persists or if you are unsure about deleting the index, consider consulting with your SAP Basis or BW team for further assistance.