How To Fix RT821 - Performance attribute CPU: average utilization (user)

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 821

• Message text: Performance attribute CPU: average utilization (user)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT821 - Performance attribute CPU: average utilization (user) ?

  The SAP error message RT821, which indicates an issue with the performance attribute CPU: average utilization (user), typically arises when the CPU utilization for user processes exceeds a certain threshold. This can lead to performance degradation in the SAP system, affecting the overall user experience.
  Cause:
  
  High User Load: A large number of concurrent users or processes can lead to increased CPU utilization.
  Inefficient Code: Poorly optimized ABAP code or inefficient SQL queries can consume excessive CPU resources.
  Background Jobs: Resource-intensive background jobs running at the same time can spike CPU usage.
  System Configuration: Inadequate hardware resources or improper system configuration can lead to high CPU utilization.
  External Factors: Other applications running on the same server or network issues can also contribute to high CPU usage.
  
  Solution:
  
  Analyze Workload: Use transaction codes like ST03N (Workload Analysis) and ST04 (Database Performance Analysis) to analyze the workload and identify the processes consuming the most CPU.
  Optimize Code: Review and optimize ABAP programs and SQL queries to reduce CPU consumption. Use tools like the ABAP Runtime Analysis (transaction SE30) to identify performance bottlenecks.
  Schedule Background Jobs: If background jobs are causing spikes in CPU usage, consider rescheduling them to off-peak hours.
  Increase Hardware Resources: If the system consistently runs at high CPU utilization, consider upgrading the hardware (CPU, RAM) or scaling out to additional application servers.
  System Configuration: Review and adjust system parameters in the SAP kernel and database settings to optimize performance.
  Monitor Regularly: Implement regular monitoring of CPU utilization and set up alerts for when thresholds are exceeded.
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may provide specific guidance or patches related to performance issues.
  SAP Community: Engage with the SAP Community for insights and shared experiences from other users facing similar issues.
  Performance Tuning Guides: Refer to SAP's performance tuning guides for best practices on optimizing SAP systems.
  
  By addressing the underlying causes and implementing the suggested solutions, you can effectively manage and reduce CPU utilization, thereby improving the performance of your SAP system.