How To Fix DT165 - A canonical memory work area was calculated.

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 165

• Message text: A canonical memory work area was calculated.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DT165 - A canonical memory work area was calculated. ?

  The SAP error message DT165, which states "A canonical memory work area was calculated," typically relates to issues with memory allocation or configuration in the SAP system. This error can occur in various contexts, often during data processing or when the system is trying to allocate memory for certain operations.
  Cause:
  
  Memory Configuration Issues: The error may arise due to insufficient memory allocation in the SAP system or incorrect configuration settings.
  Data Volume: Large volumes of data being processed can lead to memory allocation problems.
  System Parameters: Certain system parameters related to memory management may not be optimally set.
  Kernel or Software Bugs: Sometimes, bugs in the SAP kernel or specific software components can lead to this error.
  
  Solution:
  
  
  Check Memory Settings:
  
  Review and adjust the memory settings in the SAP system. This includes parameters like abap/heap_area_dia, abap/heap_area_nondia, and rdisp/PG_SHM.
  Ensure that the instance has enough memory allocated based on the workload.
  
  
  
  Monitor System Performance:
  
  Use transaction codes like ST02 (Tune Summary) and ST03 (Workload Analysis) to monitor memory usage and identify any bottlenecks.
  Check for any long-running processes that may be consuming excessive memory.
  
  
  
  Adjust Data Processing:
  
  If the error occurs during data processing, consider breaking down large data sets into smaller batches to reduce memory load.
  
  
  
  Update SAP Kernel:
  
  Ensure that you are running the latest version of the SAP kernel and other relevant components. Sometimes, upgrading can resolve underlying bugs.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. There may be patches or recommendations available.
  
  
  
  System Restart:
  
  In some cases, a system restart may help clear memory issues and reset the memory allocation.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on memory management and configuration.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if it impacts critical business processes.
  
  By following these steps, you should be able to diagnose and resolve the DT165 error in your SAP environment.