How To Fix DBMAN151 - Query cannot be materialized. Reason &1. Characteristic &2

SAP Error Message - Details

• Message type: E = Error

• Message class: DBMAN - Data Manager Message Class

• Message number: 151

• Message text: Query cannot be materialized. Reason &1. Characteristic &2

What causes this issue?

The result of the MultiProvider query is to be written to a database
table. This is not possible because the MultiProvider mapping is too
complex.
Reason 1:
Due to the MultiProvider mapping, the data has to be modified after the
included InfoProvider is accessed. However, this is not possible because
it is already written to the results table at this point.
This postprocessing is necessary when the system is reading the SIDs of
compound characteristics that do not exist with all compound components
in the included InfoProviders.
Reason 2:
Characteristic A in the MultiProvider is mapped to characteristic B in
the included InfoProvider; characteristic B in the MultiProvider is not
mapped to any characteristic in the included InfoProvider.

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

System Response

The system terminates the request.

How to fix this error?

Read the data in an internal table and write the contents of the table
to a database table yourself.

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 DBMAN151 - Query cannot be materialized. Reason &1. Characteristic &2 ?

  The SAP error message DBMAN151 indicates that a query cannot be materialized due to specific reasons related to the characteristics involved in the query. This error typically arises in the context of SAP BW (Business Warehouse) or SAP HANA when the system is unable to generate a result set for a query due to certain constraints or issues.
  Cause:
  The error message DBMAN151 usually has two parameters:
  
  
  Reason &1: This indicates the specific reason why the query cannot be materialized. Common reasons include:
  
  The query involves too many characteristics or key figures that exceed system limits.
  There are issues with the data model, such as missing or inconsistent data.
  The query is too complex, involving too many joins or aggregations that cannot be processed efficiently.
  The characteristics involved may not be compatible with the query execution.
  
  
  
  Characteristic &2: This specifies the characteristic that is causing the issue. It could be a specific dimension or attribute in the data model that is problematic.
  
  
  Solution:
  To resolve the DBMAN151 error, consider the following steps:
  
  
  Review the Query Design:
  
  Simplify the query by reducing the number of characteristics or key figures.
  Check if any characteristics can be removed or if the query can be broken down into smaller, more manageable parts.
  
  
  
  Check Data Consistency:
  
  Ensure that the data in the InfoProviders is consistent and complete. Look for missing values or inconsistencies in the characteristic that is causing the issue.
  
  
  
  Optimize the Data Model:
  
  Review the underlying data model (InfoCubes, DSOs, etc.) to ensure that it is optimized for the query. This may involve adjusting indexes, aggregations, or partitioning.
  
  
  
  Analyze Performance:
  
  Use transaction codes like RSRT (Query Monitor) to analyze the performance of the query and identify bottlenecks.
  Check for any performance issues in the database that may be affecting query execution.
  
  
  
  Check System Limits:
  
  Review the system settings and limits for query execution. There may be configuration parameters that need to be adjusted to allow for more complex queries.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support notes related to the specific error message for additional guidance and troubleshooting steps.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists, consider reaching out to SAP support for assistance, providing them with the error details and any relevant logs.
  
  
  
  Related Information:
  
  Transaction Codes: Use transaction codes like RSRT (Query Monitor) and RSA1 (Data Warehousing Workbench) to analyze and troubleshoot queries.
  SAP Notes: Check for relevant SAP Notes that may address known issues related to DBMAN151.
  Performance Tuning: Familiarize yourself with best practices for performance tuning in SAP BW or HANA environments.
  
  By following these steps, you should be able to identify the root cause of the DBMAN151 error and implement a suitable solution.