How To Fix RSD_TREX633 - All BWA hierarchy buffer entries will be deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: RSD_TREX - Messages from TREX Aggregate Area

• Message number: 633

• Message text: All BWA hierarchy buffer entries will be deleted

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSD_TREX633 - All BWA hierarchy buffer entries will be deleted ?

  The SAP error message RSD_TREX633 indicates that all BWA (Business Warehouse Accelerator) hierarchy buffer entries will be deleted. This message typically arises in the context of SAP BW (Business Warehouse) when there are issues related to the hierarchy data in the BWA.
  Cause:
  
  Hierarchy Changes: The error often occurs when there are changes made to the hierarchy structure, such as adding, deleting, or modifying nodes in the hierarchy.
  Buffer Invalidation: The BWA uses a buffer to store hierarchy data for performance reasons. When the underlying hierarchy changes, the buffer becomes invalid, prompting the system to delete the existing entries.
  Data Consistency: The system ensures data consistency by clearing the buffer to avoid discrepancies between the hierarchy data in the database and the data in the buffer.
  
  Solution:
  
  Rebuild the Buffer: After the buffer entries are deleted, the system will automatically rebuild the buffer when the next query is executed. You can also manually trigger the buffer rebuild by executing a query that uses the affected hierarchy.
  Check Hierarchy Changes: Review any recent changes made to the hierarchy. If changes were made unintentionally, consider reverting them or ensuring that they are correctly implemented.
  Monitor Performance: After the buffer is cleared and rebuilt, monitor the performance of queries that utilize the hierarchy to ensure that they are running efficiently.
  Update Statistics: If necessary, update the statistics for the InfoObjects involved in the hierarchy to ensure optimal performance.
  
  Related Information:
  
  BWA and Hierarchies: The BWA is designed to accelerate query performance in SAP BW by storing pre-aggregated data and hierarchies. Understanding how BWA interacts with hierarchies can help in troubleshooting similar issues.
  Transaction Codes: You can use transaction codes like RSBBS (for BWA administration) to monitor and manage BWA settings and performance.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or patches related to this error message. SAP Notes can be found in the SAP Support Portal.
  
  If the issue persists or if you encounter further complications, consider reaching out to SAP support for more detailed assistance tailored to your specific environment and configuration.