How To Fix RSDD_ZA169 - Delete any unneeded indexes

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 169

• Message text: Delete any unneeded indexes

What causes this issue?

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

System Response

How to fix this error?

Delete any physical indexes that are no longer assigned to a logical
index and are therefore no longer available for executing BEx queries.

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 RSDD_ZA169 - Delete any unneeded indexes ?

  The SAP error message RSDD_ZA169, which states "Delete any unneeded indexes," typically occurs in the context of SAP BW (Business Warehouse) when there are too many indexes on a particular InfoProvider or when the existing indexes are not being used efficiently. This can lead to performance issues and can hinder the system's ability to process queries effectively.
  Cause:
  
  Excessive Indexes: The InfoProvider may have too many indexes created, which can slow down data retrieval and processing.
  Unused Indexes: Some indexes may not be utilized by any queries or reports, leading to unnecessary overhead.
  Data Model Changes: Changes in the data model or InfoProvider structure may render some indexes obsolete.
  
  Solution:
  
  
  Identify Unused Indexes:
  
  Use transaction codes like RSOS or RSRT to analyze the usage of indexes.
  Check the performance of queries to see which indexes are being used and which are not.
  
  
  
  Delete Unneeded Indexes:
  
  Once you have identified the indexes that are not being used, you can delete them.
  This can typically be done through the Data Warehousing Workbench (transaction RSA1), where you can navigate to the InfoProvider and manage its indexes.
  
  
  
  Optimize Remaining Indexes:
  
  After deleting unnecessary indexes, consider optimizing the remaining ones to ensure they are configured for optimal performance.
  This may involve adjusting the index settings or creating new indexes that better suit the current data model.
  
  
  
  Regular Maintenance:
  
  Implement a regular maintenance schedule to review and manage indexes, ensuring that only necessary indexes are retained.
  Monitor performance regularly to catch any potential issues early.
  
  
  
  Related Information:
  
  Performance Tuning: Regularly monitor the performance of your BW system and adjust indexes as needed.
  Documentation: Refer to SAP documentation for best practices on managing indexes in BW.
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or solutions related to this error message.
  Consulting SAP Support: If the issue persists or if you are unsure about which indexes to delete, consider reaching out to SAP support for assistance.
  
  By following these steps, you should be able to resolve the RSDD_ZA169 error and improve the performance of your SAP BW system.