How To Fix VIRT312 - Avg. Number of CP

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 312

• Message text: Avg. Number of CP

Avg. Number of CP
Average of the number of logical processors(CP) online to the partition
within the last collection interval.

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VIRT312 - Avg. Number of CP ?

  The SAP error message VIRT312, which refers to "Avg. Number of CP," typically relates to issues with the average number of communication processes (CP) in the SAP system. This error can occur in various contexts, often related to performance or configuration settings in the SAP environment.
  Cause:
  
  Insufficient Resources: The average number of communication processes may exceed the configured limits due to insufficient system resources (CPU, memory).
  Configuration Issues: The settings for the number of dialog or background processes may not be optimized for the workload.
  High Load: A sudden increase in user activity or background jobs can lead to a spike in the average number of communication processes.
  System Bottlenecks: Other system bottlenecks, such as database performance issues, can also contribute to this error.
  
  Solution:
  
  
  Check Configuration:
  
  Review the configuration of the instance profile parameters related to the number of dialog and background processes. Key parameters include rdisp/wp_no_dia (number of dialog work processes) and rdisp/wp_no_btc (number of background work processes).
  Adjust these parameters based on the system's workload and resource availability.
  
  
  
  Monitor System Performance:
  
  Use transaction codes like ST03N (Workload Analysis) and ST06 (Operating System Monitor) to analyze system performance and identify bottlenecks.
  Check for any long-running transactions or background jobs that may be consuming excessive resources.
  
  
  
  Increase Resources:
  
  If the system is consistently under heavy load, consider scaling up the hardware resources (CPU, memory) or optimizing the existing resources.
  
  
  
  Review Workload:
  
  Analyze the workload patterns to identify peak usage times and adjust the scheduling of background jobs accordingly.
  
  
  
  SAP Notes and Support:
  
  Check for any relevant SAP Notes that may address specific issues related to VIRT312. SAP Notes often provide patches or configuration recommendations.
  If the issue persists, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: ST03N, ST06, SM50, SM66 (for monitoring work processes).
  SAP Documentation: Refer to the official SAP documentation for detailed information on configuring work processes and performance tuning.
  Performance Tuning: Regularly perform system health checks and tuning to ensure optimal performance.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the VIRT312 error and improve the performance of your SAP system.