How To Fix DMCLG268 - Calculation cannot be executed as block size limit is exceeded

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 268

• Message text: Calculation cannot be executed as block size limit is exceeded

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG268 - Calculation cannot be executed as block size limit is exceeded ?

  The SAP error message DMCLG268, which states "Calculation cannot be executed as block size limit is exceeded," typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when a calculation or data processing operation exceeds the predefined limits for block sizes. This can happen during data loading, transformation, or when executing queries that involve large datasets.
  Cause:
  
  Block Size Limit Exceeded: The error indicates that the operation you are trying to perform is attempting to process more data than the system's configured block size limit allows. This can happen during calculations, aggregations, or data loads.
  Large Data Volume: If the dataset being processed is particularly large, it may exceed the limits set for memory or processing in the system.
  Configuration Settings: The default settings for block sizes may not be suitable for the volume of data being processed, leading to this error.
  
  Solution:
  
  
  Increase Block Size Limit:
  
  You can adjust the block size settings in the SAP BW or HANA configuration. This may involve changing parameters in the system settings to allow for larger block sizes.
  For SAP HANA, you can modify the max_block_size parameter in the system configuration.
  
  
  
  Optimize Queries:
  
  Review and optimize the queries or calculations being executed. Try to break down large queries into smaller, more manageable parts.
  Use filters to limit the amount of data being processed at one time.
  
  
  
  Data Partitioning:
  
  If applicable, consider partitioning large datasets to improve performance and reduce the likelihood of exceeding block size limits.
  
  
  
  Batch Processing:
  
  If you are loading data, consider using batch processing techniques to load data in smaller chunks rather than all at once.
  
  
  
  Monitor System Resources:
  
  Ensure that the system has adequate resources (memory, CPU) to handle large calculations. Sometimes, increasing the hardware resources can help alleviate the issue.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support notes for specific guidance on adjusting block size limits and optimizing performance for your specific version of SAP BW or HANA.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or patches related to this error.
  Performance Monitoring: Use SAP's performance monitoring tools to analyze the workload and identify bottlenecks in data processing.
  Community Forums: Engage with SAP community forums or support channels for shared experiences and solutions from other users who may have encountered the same issue.
  
  If the problem persists after trying these solutions, it may be beneficial to reach out to SAP support for further assistance.