How To Fix RS_DB_DB6527 - Too many MDC block indexes exist

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_DB_DB6 - DB6-Specific Messages in SAP BW

• Message number: 527

• Message text: Too many MDC block indexes exist

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?

Report an incident on component BW-SYS-DB-DB6.

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 RS_DB_DB6527 - Too many MDC block indexes exist ?

  The SAP error message RS_DB_DB6527, which states "Too many MDC block indexes exist," typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when there are too many Multi-Dimensional Cube (MDC) block indexes created for a particular InfoCube or data model. This can lead to performance issues and may hinder the ability to process queries efficiently.
  Cause:
  
  
  Excessive Block Indexes: The primary cause of this error is the creation of too many block indexes for a single InfoCube. This can happen due to:
  
  Frequent data loads that create new block indexes.
  Poorly designed data models that lead to unnecessary block index creation.
  High cardinality of dimensions or attributes in the InfoCube.
  
  
  
  Data Volume: Large volumes of data being loaded into the InfoCube can also contribute to the creation of multiple block indexes.
  
  
  Configuration Issues: Incorrect configuration settings in the data model or InfoCube can lead to excessive block index generation.
  
  
  Solution:
  
  
  Delete Unused Block Indexes: You can delete unnecessary or unused block indexes. This can be done through transaction codes like RSA1 (Data Warehousing Workbench) or using specific BW administration tools.
  
  
  Optimize Data Model: Review and optimize the data model to reduce the number of block indexes. This may involve:
  
  Reducing the number of dimensions or attributes in the InfoCube.
  Consolidating InfoCubes if possible.
  
  
  
  Adjust Load Processes: Modify the data load processes to minimize the creation of new block indexes. This can include:
  
  Scheduling data loads during off-peak hours.
  Using delta loads instead of full loads when possible.
  
  
  
  Monitor and Analyze: Use monitoring tools to analyze the performance and usage of block indexes. This can help identify which indexes are frequently used and which are not.
  
  
  Consult SAP Notes: Check for any relevant SAP Notes or updates that may address this issue. SAP frequently releases patches and updates that can resolve known issues.
  
  
  Database Maintenance: Perform regular database maintenance tasks, such as reorganization and optimization, to ensure that the database is running efficiently.
  
  
  Related Information:
  
  SAP BW Documentation: Refer to the official SAP BW documentation for best practices on InfoCube design and data loading processes.
  SAP Community: Engage with the SAP Community forums to find discussions and solutions related to similar issues.
  Performance Tuning: Consider performance tuning techniques for SAP BW and HANA to improve overall system efficiency.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support for further assistance.