How To Fix VIRT203 - Pool CPUs

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 203

• Message text: Pool CPUs

What causes this issue?

Denotes the number of physical CPU's assigned to the shared processor
pool from which this partition receives it resources. This metric is
specific to Shared Processor LPARs

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 VIRT203 - Pool CPUs ?

  The SAP error message VIRT203, which refers to "Pool CPUs," typically indicates an issue related to the allocation of virtual CPUs in a SAP system running on a virtualized environment. This error can occur in various scenarios, particularly when the system is unable to allocate the required number of virtual CPUs for processing.
  Cause:
  
  Resource Limitation: The virtual machine (VM) may not have enough allocated CPU resources to meet the demands of the SAP workload.
  Configuration Issues: Misconfiguration in the virtualization platform (e.g., VMware, Hyper-V) can lead to insufficient CPU allocation.
  Overcommitment: If the physical host is overcommitted in terms of CPU resources, it may not be able to provide the necessary virtual CPUs to the SAP instance.
  High Load: A sudden spike in workload or inefficient processing can lead to CPU resource exhaustion.
  
  Solution:
  
  Check Resource Allocation: Verify the CPU allocation for the SAP instance in the virtualization platform. Ensure that the VM has enough virtual CPUs assigned.
  Monitor CPU Usage: Use monitoring tools to check the CPU usage of the SAP system and the underlying host. Identify if the system is under heavy load and if there are any bottlenecks.
  Adjust Resource Settings: If necessary, adjust the resource settings in the virtualization platform to allocate more CPUs or reduce the load on the existing CPUs.
  Optimize Workload: Review the workload running on the SAP system. Optimize any long-running or inefficient processes that may be consuming excessive CPU resources.
  Scale Up/Out: If the current configuration is insufficient for the workload, consider scaling up (adding more resources to the existing VM) or scaling out (adding more VMs) to distribute the load.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to CPU allocation issues.
  Virtualization Documentation: Refer to the documentation of the virtualization platform being used for best practices on resource allocation and management.
  SAP Basis Team: Collaborate with the SAP Basis team to ensure that the system is configured optimally and that any necessary adjustments are made to the infrastructure.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the VIRT203 error and ensure that your SAP system operates smoothly.