How To Fix RSDD_ZA083 - Reduce number of indexes

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 083

• Message text: Reduce number of indexes

What causes this issue?

How to fix this error?

Either use organizational measures to try to reduce the number of
InfoProviders loaded at one time or enhance your hardware.
You cannot start this action from the BW system. You have to run it
directly on BW Accelerator.

System Response

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

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_ZA083 - Reduce number of indexes ?

  The SAP error message RSDD_ZA083, which states "Reduce number of indexes," typically occurs in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when there are too many indexes defined for a particular InfoProvider or data model. This can lead to performance issues and can exceed system limits.
  Cause:
  
  Excessive Indexes: The primary cause of this error is that the number of indexes defined for a particular InfoProvider exceeds the allowable limit set by the system.
  Data Model Complexity: Complex data models with multiple InfoObjects and characteristics can lead to a proliferation of indexes.
  Performance Optimization: Sometimes, during performance tuning, additional indexes may be created without proper assessment of their necessity.
  
  Solution:
  
  Review Indexes: Analyze the existing indexes on the InfoProvider. You can do this through transaction codes like RSA1 (Data Warehousing Workbench) or by using the relevant BW modeling tools.
  Remove Unused Indexes: Identify and remove any indexes that are not being used or are redundant. Focus on keeping only those that are necessary for performance.
  Consolidate Indexes: If possible, consolidate multiple indexes into fewer ones. This may involve redesigning the data model or the way data is accessed.
  Optimize Data Model: Consider optimizing the data model to reduce complexity. This may involve simplifying the structure or reducing the number of characteristics.
  Consult SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or solutions specific to your version of SAP BW.
  System Configuration: If the issue persists, consult with your SAP Basis team to review system configuration settings that may impact index limits.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like RSA1 for data modeling and RSD1 for InfoObject maintenance to manage indexes.
  Performance Monitoring: Utilize tools like ST03N (Workload Analysis) to monitor performance and identify areas where indexes may be causing issues.
  SAP Documentation: Refer to SAP Help Portal for documentation on best practices for data modeling and index management in SAP BW.
  SAP Community: Engage with the SAP Community forums for insights and experiences shared by other users who may have faced similar issues.
  
  By following these steps, you should be able to address the RSDD_ZA083 error and improve the performance of your SAP BW environment.