How To Fix VIRT360 - Number of Shared CP free

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 360

• Message text: Number of Shared CP free

,,Avg. total Number of Shared CPs free on this physical host

Error message extract from SAP system. Copyright SAP SE.

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• What is the cause and solution for SAP error message VIRT360 - Number of Shared CP free ?

  The SAP error message "VIRT360 Number of Shared CP free" typically relates to issues with the virtual memory or shared memory configuration in the SAP system. This error can occur when the system runs out of available shared memory for processes, which can lead to performance issues or system instability.
  Cause:
  
  Insufficient Shared Memory Allocation: The system may not have enough shared memory allocated for the number of concurrent processes or users.
  High Load: A sudden increase in the number of users or processes can exhaust the available shared memory.
  Configuration Issues: Incorrect configuration settings in the SAP instance profile or operating system settings can lead to inadequate memory allocation.
  Memory Leaks: Applications or processes that do not release memory properly can lead to exhaustion of available shared memory.
  
  Solution:
  
  
  Increase Shared Memory Allocation:
  
  Adjust the parameters in the SAP instance profile (e.g., abap/heap_area_dia, abap/heap_area_nondia, rdisp/Shared_Pool_Size) to allocate more shared memory.
  Use transaction RZ10 to modify the instance profile and then restart the SAP instance for changes to take effect.
  
  
  
  Monitor and Optimize Memory Usage:
  
  Use transaction SM04 to monitor user sessions and identify any that are consuming excessive resources.
  Check for long-running transactions or background jobs that may be consuming memory.
  
  
  
  Review Operating System Settings:
  
  Ensure that the operating system's shared memory settings (e.g., shmmax, shmall on Unix/Linux systems) are configured to allow sufficient memory for SAP.
  Use commands like ipcs to check current shared memory usage and sysctl to adjust kernel parameters if necessary.
  
  
  
  Check for Memory Leaks:
  
  Analyze the application code for potential memory leaks, especially if custom developments are involved.
  Use tools like the SAP Memory Inspector or transaction ST02 to analyze memory usage and identify potential issues.
  
  
  
  Restart the SAP System: If the issue persists and immediate resolution is required, a restart of the SAP system may temporarily alleviate the problem, but it is essential to address the underlying cause.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and specific error messages for additional guidance and best practices.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Review SAP documentation on memory management and performance tuning for best practices.
  
  If the problem continues after trying these solutions, it may be beneficial to consult with SAP support or a professional with expertise in SAP system administration.