How To Fix VIRT180 - Percentage of Host Mem Claimed by The Virt Server

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 180

• Message text: Percentage of Host Mem Claimed by The Virt Server

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message VIRT180 - Percentage of Host Mem Claimed by The Virt Server ?

  The SAP error message VIRT180, which indicates that the percentage of host memory claimed by the virtual server is too high, typically arises in environments where SAP applications are running on virtual machines (VMs). This error is related to the management of memory resources in a virtualized environment, and it can lead to performance issues if not addressed.
  Cause:
  
  High Memory Usage: The virtual server is consuming a significant portion of the host's available memory, which can lead to resource contention and performance degradation.
  Configuration Issues: The virtual machine may be configured with more memory than the host can efficiently manage, or there may be insufficient memory allocated to the host.
  Memory Leaks: Applications running on the virtual server may have memory leaks, causing them to consume more memory over time.
  Overcommitment: The host may be overcommitted in terms of memory, meaning that the total memory allocated to all VMs exceeds the physical memory available on the host.
  
  Solution:
  
  Monitor Memory Usage: Use monitoring tools to track memory usage on both the host and the virtual server. Identify which applications are consuming the most memory.
  Adjust VM Configuration: 
  
  Reduce the memory allocated to the virtual server if it is higher than necessary.
  Ensure that the host has enough memory to support all running VMs without overcommitting.
  
  
  Optimize Applications: Review and optimize the applications running on the virtual server to reduce memory consumption. This may involve tuning configurations or updating to newer versions that are more efficient.
  Increase Host Memory: If feasible, consider adding more physical memory to the host to accommodate the needs of the virtual servers.
  Use Memory Management Features: Utilize features such as ballooning or swapping if supported by your virtualization platform to manage memory more effectively.
  Review Virtualization Settings: Check the settings of the virtualization platform (e.g., VMware, Hyper-V) to ensure that memory management settings are optimized for performance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and performance tuning for specific recommendations based on your SAP version and environment.
  Virtualization Documentation: Refer to the documentation of your virtualization platform for best practices on memory management and resource allocation.
  Performance Monitoring Tools: Consider using tools like SAP Solution Manager, or third-party monitoring solutions to gain insights into memory usage patterns and performance bottlenecks.
  
  By addressing the underlying causes of the VIRT180 error and implementing the suggested solutions, you can improve the performance of your SAP applications running in a virtualized environment.