How To Fix DBMAN149 - The MultiProvider query is executed in parallel (DEGREE = &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: DBMAN - Data Manager Message Class

• Message number: 149

• Message text: The MultiProvider query is executed in parallel (DEGREE = &1)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DBMAN149 - The MultiProvider query is executed in parallel (DEGREE = &1) ?

  The SAP error message DBMAN149 indicates that a MultiProvider query is being executed in parallel with a specified degree of parallelism. This message typically arises in the context of SAP BW (Business Warehouse) when a query is executed that involves multiple data sources, and the system is attempting to optimize performance by executing the query in parallel.
  Cause:
  
  Parallel Execution: The error is triggered when the query is set to run with a certain degree of parallelism, which may not be supported by the underlying database or the configuration of the BW system.
  Database Limitations: Some databases have limitations on the number of parallel processes that can be executed simultaneously, which can lead to this error if the query exceeds those limits.
  Resource Constraints: The system may not have enough resources (CPU, memory) to handle the requested degree of parallelism, leading to performance issues or failures.
  
  Solution:
  
  
  Adjust Query Settings: 
  
  Review the query settings in the SAP BW Query Designer. You can adjust the degree of parallelism to a lower value that is supported by your database and system resources.
  In the query properties, look for options related to parallel execution and modify them accordingly.
  
  
  
  Database Configuration: 
  
  Check the database configuration settings to ensure that it can handle the desired degree of parallelism. This may involve consulting with your database administrator to optimize settings.
  
  
  
  System Resources: 
  
  Monitor system resources (CPU, memory, I/O) during query execution. If resources are constrained, consider optimizing the system or scheduling the query during off-peak hours.
  
  
  
  Update SAP Notes: 
  
  Check for any relevant SAP Notes that may address this specific error or provide patches that improve the handling of parallel queries.
  
  
  
  Testing: 
  
  After making adjustments, test the query execution to ensure that the changes have resolved the issue.
  
  
  
  Related Information:
  
  SAP BW Documentation: Review the official SAP BW documentation for best practices on query performance and parallel execution.
  Database Documentation: Consult the documentation for your specific database (e.g., HANA, Oracle, SQL Server) for guidelines on configuring parallel execution.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  
  By following these steps, you should be able to address the DBMAN149 error and improve the performance of your MultiProvider queries in SAP BW.