How To Fix CNV_10020566 - Total and available memory could not be calculated

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 566

• Message text: Total and available memory could not be calculated

What causes this issue?

Calling of the function module for calculating total and available
memory space failed. Probably the "OS collector" is not running.

How to fix this error?

Use transaction ST06 to check if the "OS collector" is running.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020566 - Total and available memory could not be calculated ?

  The SAP error message CNV_10020566 indicates that the system is unable to calculate the total and available memory. This issue typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools.
  Causes:
  
  Insufficient Memory Allocation: The system may not have enough memory allocated to perform the required operations.
  Configuration Issues: There may be misconfigurations in the SAP system settings related to memory management.
  System Resource Limitations: The underlying operating system or database may have resource limitations that prevent the calculation of memory.
  Kernel or Software Bugs: There could be bugs in the SAP kernel or the specific software version being used.
  
  Solutions:
  
  
  Check Memory Allocation:
  
  Ensure that the SAP system has sufficient memory allocated. You can check the instance profile parameters (e.g., abap/heap_area_total, abap/heap_area_dia, etc.) to see if they are set appropriately.
  Increase the memory parameters if they are set too low.
  
  
  
  Review System Configuration:
  
  Verify the configuration settings in the SAP system related to memory management. Ensure that they are set according to SAP recommendations.
  
  
  
  Monitor System Resources:
  
  Use monitoring tools to check the overall system resource usage (CPU, memory, disk I/O) to identify any bottlenecks.
  Ensure that the operating system and database are not hitting their resource limits.
  
  
  
  Update SAP Kernel:
  
  Check if you are using the latest version of the SAP kernel. If not, consider updating to the latest version, as it may contain fixes for known issues.
  
  
  
  Check for Notes and Patches:
  
  Look for SAP Notes related to this error message. SAP frequently releases notes that address specific issues, including memory-related problems.
  Apply any relevant patches or updates as recommended by SAP.
  
  
  
  Consult SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed logs and system information to help diagnose the problem.
  
  
  
  Related Information:
  
  SAP Notes: Search for SAP Notes related to memory management and the specific error message. This can provide insights into known issues and recommended fixes.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for guidelines on memory management and best practices for data migration.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.