How To Fix VIRT020 - Number of logical CPUs

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 020

• Message text: Number of logical CPUs

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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Smart SAP Assistant

• What is the cause and solution for SAP error message VIRT020 - Number of logical CPUs ?

  The SAP error message VIRT020 typically indicates an issue related to the number of logical CPUs configured for the SAP system. This error can arise in various scenarios, particularly when the system is unable to allocate the required number of logical CPUs for the SAP application server or when the configuration exceeds the limits set by the operating system or virtualization environment.
  Cause:
  
  Insufficient Logical CPUs: The number of logical CPUs configured for the SAP instance may be less than what is required for optimal performance.
  Configuration Limits: The virtualization environment or operating system may impose limits on the number of logical CPUs that can be allocated to a single instance.
  Incorrect Configuration: The SAP instance may be incorrectly configured to use more logical CPUs than are available on the host machine.
  Resource Contention: Other applications or services running on the same host may be consuming CPU resources, leading to insufficient availability for the SAP instance.
  
  Solution:
  
  Check Configuration: Verify the number of logical CPUs assigned to the SAP instance in the instance profile. Ensure that it matches the available resources on the host machine.
  Adjust CPU Allocation: If the number of logical CPUs is too high, reduce it to a value that is supported by the host system. Conversely, if the number is too low, consider increasing it if resources allow.
  Review Virtualization Settings: If running in a virtualized environment, check the settings of the hypervisor to ensure that the virtual machine has been allocated the appropriate number of CPUs.
  Monitor Resource Usage: Use monitoring tools to check CPU usage on the host machine. If other applications are consuming too many resources, consider optimizing or reallocating resources.
  Consult Documentation: Refer to SAP Notes and documentation for specific guidance on CPU configuration for your version of SAP and the underlying operating system.
  Restart the Instance: After making changes to the CPU configuration, restart the SAP instance to apply the new settings.
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may provide additional insights or specific fixes related to the VIRT020 error.
  System Requirements: Review the system requirements for your specific SAP version to ensure compliance with CPU and memory specifications.
  Performance Tuning: Consider performance tuning best practices for SAP systems, which may include optimizing CPU allocation, memory settings, and other resource configurations.
  Support: If the issue persists after troubleshooting, consider reaching out to SAP Support for further assistance.
  
  By following these steps, you should be able to resolve the VIRT020 error and ensure that your SAP system is configured correctly for optimal performance.