How To Fix VIRT421 - Memory Ballooned

VIRT421 - Overview

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 421

• Message text: Memory Ballooned

What causes this issue?

Amount of memory that is seen by the OS but currently loaned to other
VSs (Ballooned)
.&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 VIRT421 - Memory Ballooned ?

  The SAP error message "VIRT421 Memory Ballooned" typically indicates that the virtual machine (VM) running the SAP system is experiencing memory pressure. This situation arises when the hypervisor (like VMware or another virtualization platform) is reclaiming memory from the VM to allocate it to other VMs that may need it more urgently. This process is known as "memory ballooning."
  
  Cause:
  
  Memory Overcommitment: The hypervisor has allocated more memory to VMs than is physically available on the host. When the host runs low on memory, it starts reclaiming memory from VMs using ballooning.
  High Memory Usage: The SAP application or other processes running on the VM are consuming a significant amount of memory, leading to pressure on the available resources.
  Insufficient Physical Memory: The physical memory on the host server may be insufficient to support the workloads of all running VMs.
  
  
  Solution:
  
  Increase Physical Memory: If possible, add more physical RAM to the host server to alleviate