How To Fix VIRT401 - CPU Shares Allocated

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 401

• Message text: CPU Shares Allocated

What causes this issue?

Number of CPU shares allocated to the virtual system.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VIRT401 - CPU Shares Allocated ?

  The SAP error message "VIRT401 CPU Shares Allocated" typically relates to issues with resource allocation in a virtualized environment, particularly when using SAP applications on platforms like VMware or other virtualization technologies. This error indicates that the CPU shares allocated to the SAP instance are insufficient for its performance needs.
  Cause:
  
  Insufficient CPU Shares: The virtual machine (VM) running the SAP instance may not have enough CPU shares allocated to it compared to other VMs running on the same host.
  High Resource Demand: The SAP application may be experiencing high load or demand for CPU resources, leading to contention with other applications or VMs.
  Configuration Issues: Misconfiguration in the virtualization environment or resource management settings can lead to improper allocation of CPU shares.
  
  Solution:
  
  
  Increase CPU Shares:
  
  Access the virtualization management console (e.g., VMware vSphere).
  Locate the VM running the SAP instance.
  Adjust the CPU shares settings to allocate more shares to the SAP VM. This can be done by increasing the number of shares or changing the resource allocation settings to a higher priority.
  
  
  
  Monitor Resource Usage:
  
  Use monitoring tools to analyze CPU usage and performance metrics for the SAP instance and other VMs.
  Identify if other VMs are consuming excessive CPU resources and adjust their allocations if necessary.
  
  
  
  Optimize SAP Performance:
  
  Review and optimize the SAP application configuration to ensure it is running efficiently.
  Consider scaling up the VM by adding more virtual CPUs if the workload justifies it.
  
  
  
  Review Virtualization Settings:
  
  Ensure that the virtualization host has adequate resources available and is not overcommitted.
  Check for any resource pools or limits that may be affecting the CPU allocation for the SAP instance.
  
  
  
  Consult Documentation:
  
  Refer to SAP and virtualization platform documentation for best practices on resource allocation and performance tuning.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to performance issues and resource allocation.
  Virtualization Best Practices: Review best practices for configuring SAP applications in virtualized environments, including CPU, memory, and storage considerations.
  Performance Monitoring Tools: Utilize tools like SAP Solution Manager, SAP EarlyWatch Alert, or third-party monitoring solutions to keep track of system performance and resource utilization.
  
  By addressing the CPU share allocation and ensuring that the SAP instance has the necessary resources, you can resolve the VIRT401 error and improve the overall performance of your SAP applications.