How To Fix RSMSS_ANALYZER_MSG015 - Partitioned F-Fact tables that can be unpartitioned

SAP Error Message - Details

• Message type: E = Error

• Message class: RSMSS_ANALYZER_MSG - Messages for RSMSS_ANALYZER

• Message number: 015

• Message text: Partitioned F-Fact tables that can be unpartitioned

Check description
This check returns a list of partitioned F-Fact tables (SAP standard).
You can unpartition selected F-Fact tables with the repair option.
<ZH>Unpartitioning of an F-Fact table should only be executed by SAP
Support for a specific customer problem. </>
Repair description
With the repair option, you can unpartition an F-Fact table. The
original table is backed up to a /BI0/06* temporary table that is not
automatically deleted after the unpartitioning has been completed.
The data of the original table is copied to the new unpartitioned table
in several data packages based on the cube request. Each package
transfer is committed in the database.
In the event of an error ? for example, a full transaction log during
data transfer ? you can re-run the repair. The repair continues with the
package that aborted during the previous run.
After all data has been transferred, a data consistency check is
triggered to compare the number of rows in the new unpartitioned table
with the number of rows in the backup table.
The complete unpartitioning process is documented in the application log
and in the repair result log. There you can also find the names of the
backup tables as well as the transferred packages.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSMSS_ANALYZER_MSG015 - Partitioned F-Fact tables that can be unpartitioned ?

  The SAP error message RSMSS_ANALYZER_MSG015 indicates that there are partitioned fact tables in your SAP system that can be unpartitioned. This typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA environments where data modeling and performance optimization are critical.
  Cause:
  The error arises when the system detects that certain fact tables, which are currently partitioned, do not require partitioning based on the current data model or usage patterns. This can happen due to:
  
  Data Volume Changes: The volume of data in the fact table may have decreased, making partitioning unnecessary.
  Performance Issues: The performance of queries may not benefit from partitioning, leading to the recommendation to unpartition.
  Modeling Changes: Changes in the data model or the way data is accessed can render partitioning redundant.
  
  Solution:
  To resolve this error, you can consider the following steps:
  
  
  Analyze the Need for Partitioning:
  
  Review the usage patterns of the fact tables in question.
  Check if the performance of queries is affected by the current partitioning.
  
  
  
  Unpartition the Fact Tables:
  
  If you determine that unpartitioning is appropriate, you can proceed to unpartition the fact tables. This can typically be done through the Data Warehousing Workbench or the relevant transaction codes in SAP BW.
  Use the appropriate tools or transaction codes (like RSA1) to manage the data model and adjust the partitioning settings.
  
  
  
  Re-evaluate Data Model:
  
  After unpartitioning, monitor the performance of the queries and data loads to ensure that the changes have a positive impact.
  If necessary, consider re-partitioning in the future if data volumes or access patterns change again.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to partitioning and performance optimization for best practices and guidelines.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or updates regarding this error message.
  Performance Tuning: Consider engaging in performance tuning activities to optimize your data model and query performance.
  Data Modeling Best Practices: Familiarize yourself with best practices for data modeling in SAP BW or HANA to avoid similar issues in the future.
  
  By following these steps, you should be able to address the RSMSS_ANALYZER_MSG015 error effectively.