How To Fix BRAIN230 - Could not buffer query structures. Buffer too small

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN -

• Message number: 230

• Message text: Could not buffer query structures. Buffer too small

What causes this issue?

To improve the runtime, the structures needed by the OLAP engine are
stored in the shared memory. This query requires &V1& bytes. This is
more space than is available in the shared memory.

System Response

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

How to fix this error?

Procedure for System Administrators

Make sure that the value (in KB) of the profile parameter
<AB>rsdb/obj/buffersize</> is 4.5 times larger than the space required
by this query. For information on this parameter, see transaction RZ11.
However, remember that for performance reasons an individual object can
not occupy the majority of the buffer, so the maximum permitted object
size is considerably less that the total size of the buffer.
If you do not increase the parameter, the necessary structures must be
read from the database.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN230 - Could not buffer query structures. Buffer too small ?

  The SAP error message BRAIN230: Could not buffer query structures. Buffer too small typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when there is an issue with the memory allocation for query execution. This error indicates that the buffer size allocated for the query structures is insufficient to handle the data being processed.
  Causes:
  
  Large Query Result Set: The query being executed may be returning a large volume of data that exceeds the buffer size.
  Insufficient Memory Allocation: The system may not have enough memory allocated for processing the query.
  Configuration Issues: There may be configuration settings in the SAP BW system that limit the buffer size for query execution.
  Complex Queries: Queries with multiple joins, aggregations, or complex calculations can require more memory than simpler queries.
  
  Solutions:
  
  
  Increase Buffer Size:
  
  You can increase the buffer size for query execution in the SAP BW system. This can typically be done by adjusting the settings in the SAP BW configuration.
  Check the settings in transaction RSCUSTV10 (for query settings) or RSADMIN (for general BW settings) to see if you can increase the buffer size.
  
  
  
  Optimize the Query:
  
  Review the query design and try to optimize it. This may involve reducing the number of key figures, limiting the number of dimensions, or simplifying calculations.
  Consider breaking down complex queries into smaller, more manageable queries.
  
  
  
  Check System Resources:
  
  Ensure that the SAP BW system has adequate memory and resources allocated. This may involve checking the server's physical memory and adjusting the SAP memory parameters.
  Monitor the system performance to identify any bottlenecks.
  
  
  
  Use Aggregates:
  
  If applicable, consider using aggregates to pre-calculate and store summary data, which can reduce the amount of data processed during query execution.
  
  
  
  Update SAP Notes:
  
  Check for any relevant SAP Notes that may address this issue. Sometimes, SAP releases patches or updates that can resolve specific errors.
  
  
  
  Consult SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. They may provide specific guidance based on your system configuration and version.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSRT (to run queries), RSCUSTV10 (to customize query settings), and RSADMIN (to manage BW settings).
  Performance Monitoring: Use tools like ST03N (Workload Analysis) and ST04 (Database Performance Analysis) to monitor system performance and identify potential issues.
  Documentation: Refer to SAP documentation and guides on query performance optimization and memory management in SAP BW.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the BRAIN230 error and improve the performance of your queries in SAP BW.