How To Fix VIRT325 - Max. log. CP Usage

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 325

• Message text: Max. log. CP Usage

Max. log. CP Usage
MVS view of CPU utilization (Maximum percentage within the last
collection interval).
For example, if an MVS partition has 5% of the processor capacity and
the physical CPU utilization reported by RMF for the partition is 5%,
this indicates an MVS view of 100% CPU utilization.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VIRT325 - Max. log. CP Usage ?

  The SAP error message VIRT325: Max. log. CP Usage typically indicates that the maximum number of logical CPUs (CPUs) that can be used by a particular SAP instance has been exceeded. This can occur in environments where there are resource constraints or misconfigurations in the system settings.
  Cause:
  
  Resource Limits: The system may have reached the maximum limit of logical CPUs that can be allocated for processing.
  Configuration Issues: The configuration settings for the instance may not be optimized for the available hardware resources.
  High Load: A sudden increase in workload or concurrent users can lead to excessive CPU usage.
  System Parameters: The parameters related to CPU usage in the SAP profile may not be set correctly.
  
  Solution:
  
  
  Check System Configuration:
  
  Review the instance profile parameters related to CPU usage, such as rdisp/num_cpus and rdisp/num_vcpus.
  Ensure that these parameters are set according to the available hardware resources.
  
  
  
  Monitor CPU Usage:
  
  Use transaction codes like SM50 or SM66 to monitor the active processes and their CPU usage.
  Identify any long-running or resource-intensive processes that may be consuming excessive CPU resources.
  
  
  
  Adjust Workload:
  
  If the system is under heavy load, consider redistributing the workload or scheduling batch jobs during off-peak hours.
  Implement load balancing if multiple application servers are available.
  
  
  
  Increase Hardware Resources:
  
  If the current hardware is insufficient, consider upgrading the server or adding more CPUs to handle the workload.
  
  
  
  SAP Notes and Support:
  
  Check for any relevant SAP Notes that may address this specific error or provide guidance on configuration best practices.
  If the issue persists, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  SAP Documentation: Review the official SAP documentation for guidelines on configuring CPU resources and performance tuning.
  Performance Monitoring Tools: Utilize SAP's performance monitoring tools to analyze system performance and identify bottlenecks.
  System Logs: Check system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to diagnose and resolve the VIRT325 error effectively.