How To Fix RSD_TREX138 - The amount of data to be read from the BWA server is too large

SAP Error Message - Details

• Message type: E = Error

• Message class: RSD_TREX - Messages from TREX Aggregate Area

• Message number: 138

• Message text: The amount of data to be read from the BWA server is too large

What causes this issue?

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

System Response

How to fix this error?

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 RSD_TREX138 - The amount of data to be read from the BWA server is too large ?

  The SAP error message RSD_TREX138 indicates that the amount of data being requested from the BWA (Business Warehouse Accelerator) server is too large for the system to handle in a single query. This can occur when the query is trying to retrieve a large dataset that exceeds the limits set by the BWA server or the configuration of the SAP BW system.
  Causes:
  
  Large Dataset: The query is attempting to retrieve a very large amount of data, which exceeds the maximum limit that the BWA can process in one go.
  Query Design: The design of the query may not be optimized, leading to excessive data retrieval.
  BWA Configuration: The BWA server may have configuration limits that restrict the amount of data that can be processed in a single request.
  Memory Limitations: The BWA server may be running low on memory or resources, causing it to reject large requests.
  
  Solutions:
  
  
  Optimize the Query:
  
  Review and optimize the query to reduce the amount of data being requested. This can include adding filters, reducing the number of columns, or aggregating data.
  Use variables or prompts to limit the data returned based on user input.
  
  
  
  Adjust BWA Configuration:
  
  Check the BWA configuration settings to see if there are parameters that can be adjusted to allow for larger data requests. This may involve increasing memory limits or adjusting other performance-related settings.
  
  
  
  Use Data Aggregation:
  
  If possible, aggregate the data at a higher level before querying. This can significantly reduce the volume of data being processed.
  
  
  
  Split the Query:
  
  If the dataset is inherently large, consider splitting the query into smaller parts and executing them separately. This can be done by breaking down the time periods or dimensions being queried.
  
  
  
  Monitor BWA Performance:
  
  Use monitoring tools to check the performance of the BWA server. Ensure that it has sufficient resources (CPU, memory) to handle the queries being sent to it.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes or documentation that may provide additional guidance or patches related to this error.
  
  
  
  Related Information:
  
  SAP BW and BWA: Understanding how SAP BW interacts with BWA can help in optimizing queries and configurations.
  Performance Tuning: Familiarize yourself with performance tuning techniques for SAP BW and BWA to improve overall system efficiency.
  SAP Community and Support: Engage with the SAP Community or SAP Support for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to address the RSD_TREX138 error and improve the performance of your queries in SAP BW.