How To Fix RSMSS_ANALYZER_MSG161 - &1 uncompressed requests left for query performance reasons

SAP Error Message - Details

• Message type: E = Error

• Message class: RSMSS_ANALYZER_MSG - Messages for RSMSS_ANALYZER

• Message number: 161

• Message text: &1 uncompressed requests left for query performance reasons

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSMSS_ANALYZER_MSG161 - &1 uncompressed requests left for query performance reasons ?

  The SAP error message RSMSS_ANALYZER_MSG161 indicates that there are uncompressed requests left for a query, which can affect performance. This message typically arises in the context of SAP BW (Business Warehouse) or SAP HANA environments where data is being processed and analyzed.
  Cause:
  The error message is triggered when the system detects that there are still uncompressed requests in the InfoCube or DataStore Object (DSO) that are impacting the performance of queries. Uncompressed requests can lead to slower query performance because they require more storage and processing power to handle the data.
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Compress the Requests:
  
  Go to the relevant InfoCube or DSO in the SAP BW system.
  Use the transaction code RSA1 to access the Data Warehousing Workbench.
  Navigate to the InfoProvider (InfoCube or DSO) and check for uncompressed requests.
  Select the uncompressed requests and initiate the compression process. This can usually be done by right-clicking on the request and selecting the "Compress" option.
  
  
  
  Check for Data Load Issues:
  
  Ensure that there are no issues with the data load process that might be causing requests to remain uncompressed. Review the data load logs for any errors or warnings.
  
  
  
  Schedule Regular Compression:
  
  To prevent this issue from recurring, consider scheduling regular compression jobs as part of your data load process. This can be done using process chains in SAP BW.
  
  
  
  Monitor Query Performance:
  
  After compressing the requests, monitor the performance of your queries to ensure that the changes have had a positive impact.
  
  
  
  Review Query Design:
  
  If performance issues persist, review the design of your queries. Complex queries or those that access large volumes of data may need optimization.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  RSA1: Data Warehousing Workbench
  RSMO: Monitor Data Loads
  RSRT: Query Monitor for analyzing query performance
  
  
  
  Documentation:
  
  Refer to SAP Help documentation for detailed steps on managing InfoProviders and data compression.
  Check SAP Notes for any specific patches or updates related to performance issues in your version of SAP BW or HANA.
  
  
  
  Performance Tuning:
  
  Consider engaging with SAP Basis or BW consultants for performance tuning if the issue is recurrent or if you are dealing with large datasets.
  
  
  
  By following these steps, you should be able to resolve the error message and improve the performance of your queries in SAP BW or HANA.