How To Fix RSCV191 - Star transformation is not switched on

SAP Error Message - Details

• Message type: E = Error

• Message class: RSCV - Analysis of BW objects (InfoCubes...)

• Message number: 191

• Message text: Star transformation is not switched on

What causes this issue?

An ORACLE system parameter is incorrectly set.

How to fix this error?

Please insert the following line in the ORACLE initialization file
'init<SID>.ora' (where <SID> is the name of your database):
star_transformation_enabled=true

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSCV191 - Star transformation is not switched on ?

  The SAP error message RSCV191, which states "Star transformation is not switched on," typically occurs in the context of SAP BW (Business Warehouse) when you are trying to execute a query that involves star schema transformations, but the necessary settings for star transformation are not enabled.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Star Transformation Not Activated: The star transformation feature is not activated in the SAP BW system.
  Query Settings: The query you are trying to execute may not be configured to use star transformation.
  Data Source Configuration: The InfoProvider or the data source may not be set up to support star transformation.
  
  Solution:
  To resolve the RSCV191 error, you can follow these steps:
  
  
  Activate Star Transformation:
  
  Go to the SAP BW system and navigate to the relevant InfoProvider (e.g., InfoCube).
  Check the settings for the InfoProvider and ensure that the star transformation is activated. This can usually be done in the InfoProvider settings under the "General" tab or similar.
  
  
  
  Check Query Settings:
  
  Open the query in the Query Designer.
  Ensure that the query is set to use star transformation. This can typically be found in the properties of the query or in the settings related to performance optimization.
  
  
  
  Review Data Source Configuration:
  
  Ensure that the data source (e.g., InfoCube, DSO) is properly configured to support star transformation.
  Check if there are any restrictions or settings that might prevent the use of star transformation.
  
  
  
  Check for Updates:
  
  Ensure that your SAP BW system is up to date with the latest support packages and patches, as there may be bug fixes or enhancements related to star transformation.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation or notes related to star transformation for any specific configurations or requirements that may apply to your version of SAP BW.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to RSCV191 for any specific guidance or updates from SAP.
  Performance Optimization: Star transformation is a performance optimization technique in SAP BW that can significantly improve query performance by reducing the amount of data processed.
  SAP Community: Engage with the SAP Community forums for discussions and solutions shared by other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the RSCV191 error and successfully utilize star transformation in your SAP BW queries.