How To Fix CSM_VMC045 - Size of Shared Pool (Shared Memory for All VMs)

SAP Error Message - Details

• Message type: E = Error

• Message class: CSM_VMC - Messages for VM Container Monitoring

• Message number: 045

• Message text: Size of Shared Pool (Shared Memory for All VMs)

System Response

Size of the shared pool in kilobytes. The value cannot be changed while
the VM Container is running. It can only be changed in the profile and
by restarting the VM Container.
For information about the shared pool and the other memory types see the
online documentation under <DS:KENO.001560AA0E081DEB91E241270609CAF7>
Memory Management in the VM Container.</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CSM_VMC045 - Size of Shared Pool (Shared Memory for All VMs) ?

  The SAP error message CSM_VMC045, which indicates an issue with the "Size of Shared Pool (Shared Memory for All VMs)," typically arises in the context of SAP's Virtual Machine Container (VMC) or when dealing with memory allocation for SAP applications running on a virtualized environment. This error suggests that the shared memory pool allocated for the virtual machines is either insufficient or improperly configured.
  Cause:
  
  Insufficient Memory Allocation: The shared memory pool may not have enough memory allocated to accommodate the needs of all running virtual machines.
  Configuration Issues: Incorrect configuration settings in the SAP system or the underlying operating system can lead to this error.
  Resource Contention: Other applications or processes running on the same server may be consuming memory resources, leading to insufficient memory for the SAP VMC.
  Memory Leaks: If there are memory leaks in the application or the underlying system, it can lead to exhaustion of the shared memory pool.
  
  Solution:
  
  
  Increase Shared Memory Allocation:
  
  Adjust the configuration settings to increase the size of the shared memory pool. This can typically be done in the SAP profile parameters (e.g., abap/heap_area_total or abap/heap_area_dia).
  You may also need to adjust the operating system settings to allow for larger shared memory segments.
  
  
  
  Check Configuration Settings:
  
  Review the SAP instance profile and ensure that the parameters related to memory allocation are set correctly.
  Ensure that the vm.max_map_count and other relevant kernel parameters are set appropriately for your environment.
  
  
  
  Monitor Resource Usage:
  
  Use monitoring tools to check the memory usage of the SAP system and other applications running on the server. This can help identify if other processes are consuming excessive memory.
  Consider using tools like SAP Solution Manager or operating system-level monitoring tools to track memory usage.
  
  
  
  Optimize Application Performance:
  
  Review the application for any potential memory leaks or inefficient memory usage patterns.
  Optimize the code and configurations to reduce memory consumption.
  
  
  
  Restart the SAP System:
  
  In some cases, a simple restart of the SAP system or the affected virtual machines can resolve temporary memory allocation issues.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and the specific error message for any patches or updates that may address the issue.
  Documentation: Refer to the SAP Basis documentation for guidelines on configuring memory settings and managing shared memory.
  Operating System Settings: Depending on the operating system (Linux, Windows, etc.), you may need to adjust system-level parameters related to shared memory.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support or your system administrator for further assistance.