How To Fix UJK_EXCEPTION091 - Logic is running on too large a selection; try using MAXMEMBERS

SAP Error Message - Details

• Message type: E = Error

• Message class: UJK_EXCEPTION -

• Message number: 091

• Message text: Logic is running on too large a selection; try using MAXMEMBERS

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UJK_EXCEPTION091 - Logic is running on too large a selection; try using MAXMEMBERS ?

  The SAP error message UJK_EXCEPTION091 indicates that a logic operation is attempting to process a selection that is too large for the system to handle efficiently. This typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when executing queries or calculations that involve a large dataset.
  Cause:
  The error is caused by the logic trying to process too many records at once, which exceeds the system's memory limits or processing capabilities. This can happen in scenarios such as:
  
  Running a query that retrieves a very large number of records.
  Performing calculations or aggregations on a dataset that is too large.
  Insufficient memory allocation for the operation being performed.
  
  Solution:
  To resolve this issue, you can try the following approaches:
  
  
  Use MAXMEMBERS: 
  
  The error message suggests using the MAXMEMBERS parameter. This parameter limits the number of records processed in a single operation. You can set this parameter in your query or logic to restrict the number of records being processed at one time.
  For example, if you are using a BEx query, you can set the MAXMEMBERS in the query properties.
  
  
  
  Optimize the Query:
  
  Review the query to see if you can filter the data more effectively. Reducing the selection criteria can help limit the number of records processed.
  Consider using additional filters or parameters to narrow down the dataset.
  
  
  
  Aggregate Data:
  
  If possible, aggregate the data before running the logic. This can reduce the number of records being processed and help avoid memory issues.
  
  
  
  Increase Memory Allocation:
  
  If you have control over the system settings, consider increasing the memory allocation for the SAP BW or HANA system. This may involve adjusting parameters in the system configuration.
  
  
  
  Check for Performance Issues:
  
  Analyze the performance of the underlying data model and queries. Look for any inefficiencies that could be optimized.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support notes related to the specific version of SAP BW or HANA you are using for any additional recommendations or best practices.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Performance Monitoring: Use transaction codes like ST03N or ST04 to monitor system performance and identify bottlenecks.
  
  By following these steps, you should be able to address the UJK_EXCEPTION091 error and improve the performance of your SAP queries and logic operations.