How To Fix VIRT304 - CPU Capacity

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 304

• Message text: CPU Capacity

What causes this issue?

CPU capacity in Millions of Service Units (MSU) / hour.

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 VIRT304 - CPU Capacity ?

  The SAP error message VIRT304, which indicates a CPU capacity issue, typically arises when the system is experiencing performance problems due to insufficient CPU resources. This can happen in various scenarios, such as during peak processing times, when running resource-intensive transactions, or when the system is not properly sized for the workload it is handling.
  Causes of VIRT304 CPU Capacity Error
  
  High Workload: The system is processing a high volume of transactions or batch jobs that exceed the available CPU capacity.
  Insufficient Hardware Resources: The underlying hardware may not have enough CPU cores or processing power to handle the current workload.
  Inefficient Code: Poorly optimized ABAP code or inefficient queries can lead to excessive CPU usage.
  Configuration Issues: Incorrect system configuration or parameters may lead to suboptimal CPU utilization.
  Background Jobs: A large number of background jobs running simultaneously can consume CPU resources.
  
  Solutions to VIRT304 CPU Capacity Error
  
  
  Analyze Workload:
  
  Use transaction codes like ST03N (Workload Analysis) to analyze the workload and identify which transactions or jobs are consuming the most CPU resources.
  Check for any long-running or resource-intensive jobs that can be rescheduled or optimized.
  
  
  
  Optimize Code:
  
  Review and optimize ABAP programs and queries that are consuming excessive CPU time.
  Use performance analysis tools like SAT (ABAP Runtime Analysis) or SE30 (Runtime Analysis) to identify bottlenecks.
  
  
  
  Increase Hardware Resources:
  
  If the workload consistently exceeds the current CPU capacity, consider upgrading the hardware by adding more CPU cores or moving to a more powerful server.
  Evaluate the possibility of scaling out by adding additional application servers.
  
  
  
  Adjust System Configuration:
  
  Review and adjust SAP parameters related to CPU utilization, such as rdisp/num_wp (number of work processes) and rdisp/wp_no_btc (number of background work processes).
  Ensure that the system is configured to make optimal use of available resources.
  
  
  
  Schedule Jobs Wisely:
  
  Reschedule batch jobs to run during off-peak hours to reduce the load on the system during peak times.
  Limit the number of concurrent background jobs to prevent CPU saturation.
  
  
  
  Monitor System Performance:
  
  Continuously monitor system performance using tools like SAP Solution Manager or other monitoring solutions to proactively identify and address CPU capacity issues.
  
  
  
  Related Information
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to CPU capacity issues.
  SAP Community: Engage with the SAP Community for insights and shared experiences from other users who may have faced similar issues.
  Performance Tuning: Consider engaging with SAP Basis or performance tuning experts if the issue persists despite optimization efforts.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the VIRT304 CPU capacity error and improve the overall performance of your SAP system.