How To Fix BRAIN347 - The maximum number of temporary join hierarchies is &1

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN -

• Message number: 347

• Message text: The maximum number of temporary join hierarchies is &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN347 - The maximum number of temporary join hierarchies is &1 ?

  The SAP error message BRAIN347 indicates that the maximum number of temporary join hierarchies has been exceeded in your SAP BW (Business Warehouse) system. This typically occurs when you are trying to execute a query that involves too many temporary join hierarchies, which can happen in complex queries or when there are multiple joins between InfoObjects.
  Cause:
  
  Exceeding Limits: The system has a predefined limit for the number of temporary join hierarchies that can be created during query execution. When this limit is exceeded, the error is triggered.
  Complex Queries: Queries that involve multiple InfoProviders or complex joins can lead to the creation of many temporary join hierarchies.
  Data Model Design: Poorly designed data models or excessive use of joins in queries can contribute to this issue.
  
  Solution:
  
  Optimize Queries: Review and optimize the queries that are causing the error. Try to simplify the query by reducing the number of joins or InfoProviders involved.
  Use Aggregates: If possible, use aggregates instead of detailed queries to reduce the complexity and number of joins.
  Check Data Model: Analyze the data model to identify any unnecessary joins or InfoObjects that can be removed or consolidated.
  Increase Limits: If necessary and feasible, consult with your SAP Basis team to see if the limit for temporary join hierarchies can be increased in the system settings. However, this should be done with caution and understanding of the potential impact on system performance.
  Use BEx Query Designer: Utilize the BEx Query Designer to create more efficient queries, ensuring that you are not inadvertently creating excessive joins.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  Performance Monitoring: Use transaction codes like ST03N or ST04 to monitor performance and identify bottlenecks in query execution.
  Documentation: Refer to SAP BW documentation for best practices in query design and data modeling to avoid such issues in the future.
  
  By addressing the complexity of your queries and optimizing your data model, you can mitigate the occurrence of the BRAIN347 error and improve overall system performance.