How To Fix DMCLG257 - Processing of access plans and precalculations has been cancelled

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 257

• Message text: Processing of access plans and precalculations has been cancelled

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG257 - Processing of access plans and precalculations has been cancelled ?

  The SAP error message DMCLG257, which states "Processing of access plans and precalculations has been cancelled," typically occurs in the context of data modeling and data processing within SAP BW (Business Warehouse) or SAP HANA environments. This error can arise due to various reasons, and understanding the cause is crucial for finding an appropriate solution.
  Causes:
  
  Resource Limitations: The system may be running out of memory or other resources, leading to the cancellation of the processing.
  Long Processing Times: If the access plans or precalculations take too long to execute, the system may time out and cancel the process.
  Data Model Issues: There may be issues with the data model, such as incorrect joins, missing data, or inconsistencies that prevent successful processing.
  Locks or Conflicts: Other processes or users may be locking the data or resources needed for the access plans, causing the cancellation.
  Configuration Errors: Incorrect settings in the data model or in the BW/BI configuration can lead to this error.
  
  Solutions:
  
  Check System Resources: Monitor the system's memory and CPU usage. If resources are low, consider optimizing the system or increasing the available resources.
  Optimize Queries: Review the access plans and precalculations for optimization opportunities. Simplifying complex queries or breaking them into smaller parts can help.
  Increase Timeout Settings: If the processing is timing out, consider increasing the timeout settings in the system configuration.
  Review Data Model: Check the data model for any inconsistencies or errors. Ensure that all necessary data is available and that the model is correctly configured.
  Check for Locks: Use transaction codes like SM12 to check for locks on the relevant tables or objects. If locks are found, resolve them by terminating the blocking sessions if appropriate.
  Re-run the Process: After addressing any identified issues, try re-running the access plans or precalculations to see if the error persists.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), ST22 (Dump Analysis), and SM37 (Job Monitoring) to diagnose and troubleshoot issues.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Logs and Traces: Review logs and traces for more detailed error messages that can provide insights into the root cause of the cancellation.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with SAP support or a technical consultant who specializes in SAP BW or HANA environments for further assistance.