How To Fix VIRT423 - Memory Shares Allocated

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 423

• Message text: Memory Shares Allocated

What causes this issue?

On VMware, this is the number of memory shares allocated to the virtual
system.

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 VIRT423 - Memory Shares Allocated ?

  The SAP error message VIRT423, which indicates "Memory Shares Allocated," typically relates to issues with memory allocation in the SAP system, particularly in environments where SAP is running on virtualized infrastructure. This error can occur when the system is unable to allocate the required memory resources for its operations.
  Causes:
  
  Insufficient Memory Allocation: The virtual machine (VM) may not have enough memory allocated to meet the demands of the SAP application.
  Memory Limits: There may be limits set on the memory usage for the VM or the host machine, preventing SAP from accessing the necessary memory.
  Resource Contention: Other applications or VMs running on the same host may be consuming excessive memory, leading to contention and insufficient resources for SAP.
  Configuration Issues: Incorrect configuration settings in the SAP system or the underlying virtualization platform can lead to memory allocation problems.
  
  Solutions:
  
  Increase Memory Allocation: Review and increase the memory allocated to the SAP VM. Ensure that it meets the recommended requirements for the SAP application you are running.
  Check Host Resources: Ensure that the host machine has sufficient physical memory available and is not overcommitted. If necessary, add more physical memory to the host.
  Adjust Resource Limits: If there are resource limits set on the VM or host, consider adjusting these limits to allow for more memory allocation to the SAP system.
  Optimize Other VMs: If other VMs are consuming too much memory, consider optimizing their configurations or shutting down unnecessary VMs to free up resources.
  Monitor Memory Usage: Use monitoring tools to track memory usage patterns in the SAP system and the host environment. This can help identify peak usage times and potential bottlenecks.
  Review SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or updates that may address known issues related to memory allocation.
  
  Related Information:
  
  SAP Memory Management: Understanding how SAP manages memory can help in configuring the system appropriately. SAP uses different memory types, such as heap memory, roll memory, and extended memory.
  Virtualization Best Practices: Familiarize yourself with best practices for running SAP on virtualized environments, including proper sizing and resource allocation.
  SAP Basis Administration: Engage with your SAP Basis team to ensure that the system is configured correctly and that any necessary adjustments are made to support optimal performance.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with SAP support or your infrastructure team for further assistance.