How To Fix RSD_TREX143 - Large indexes must be recreated; job will be started

SAP Error Message - Details

• Message type: E = Error

• Message class: RSD_TREX - Messages from TREX Aggregate Area

• Message number: 143

• Message text: Large indexes must be recreated; job will be started

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSD_TREX143 - Large indexes must be recreated; job will be started ?

  The SAP error message RSD_TREX143 indicates that large indexes in the SAP BW (Business Warehouse) system need to be recreated. This typically occurs when the system detects that the existing indexes are either corrupted, outdated, or not optimized for performance. The message suggests that a job will be started to handle the recreation of these indexes.
  Cause:
  
  Index Corruption: The indexes may have become corrupted due to system crashes, improper shutdowns, or other issues.
  Data Changes: Significant changes in the underlying data or structure may require the indexes to be rebuilt to ensure optimal performance.
  Performance Optimization: The system may determine that the current indexes are not performing efficiently, prompting a rebuild.
  Database Maintenance: Regular maintenance tasks may have flagged the need for index recreation.
  
  Solution:
  
  Automatic Job Execution: The system will typically start a background job to recreate the indexes automatically. You can monitor this job in the SAP system.
  Manual Index Recreation: If the automatic job does not start or fails, you can manually trigger the index recreation:
  
  Go to the transaction code RSA1 (Data Warehousing Workbench).
  Navigate to the InfoProvider that is causing the issue.
  Right-click on the InfoProvider and select the option to "Rebuild Index" or "Rebuild Aggregates."
  
  
  Check Job Status: After the job has been executed, check the job status in transaction SM37 to ensure it completed successfully.
  Monitor Performance: After the indexes are recreated, monitor the performance of the queries and reports that utilize the affected InfoProviders to ensure that performance has improved.
  
  Related Information:
  
  Transaction Codes:
  
  RSA1: Data Warehousing Workbench for managing InfoProviders.
  SM37: Job Monitoring to check the status of background jobs.
  
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to index management and performance issues.
  Database Maintenance: Regularly perform database maintenance tasks to prevent index issues, including statistics updates and database optimization.
  System Logs: Review system logs for any additional errors or warnings that may provide context for the index recreation requirement.
  
  Best Practices:
  
  Schedule regular maintenance windows to perform index checks and rebuilds as necessary.
  Monitor system performance and set up alerts for any unusual behavior that may indicate index issues.
  Keep your SAP BW system and database up to date with the latest patches and updates to minimize the risk of index-related problems.
  
  By following these steps, you should be able to resolve the RSD_TREX143 error and ensure that your SAP BW system operates efficiently.