How To Fix VIRT426 - Target Memory Buffer

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 426

• Message text: Target Memory Buffer

What causes this issue?

On Hyper-V: the number shows the portion (in percent) of the Memory
Demand value that the hypervisor should add as memory buffer to the VM
if there are sufficient physical memory resources available on the
virtualization host. So, the hypervisor tries to assign an amount of
memory (Target Memory) to the VM according the formula:
Target Memory = Memory Demand + (Memory Demand * Target Memory
Buffer)/100
However, the Target Memory is not guaranteed when the virtualization
host is under memory pressure.
This value is valid with activated Dynamic Memory only.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

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 VIRT426 - Target Memory Buffer ?

  The SAP error message VIRT426, which refers to "Target Memory Buffer," typically occurs in the context of SAP's Virtual Memory Management. This error indicates that the system has encountered an issue related to memory allocation for a specific process or operation.
  Cause:
  
  Insufficient Memory Allocation: The most common cause of this error is that the system does not have enough memory allocated to handle the current workload or the specific operation being performed.
  Configuration Issues: Incorrect configuration settings in the SAP system related to memory management can lead to this error.
  High Load: A sudden spike in system load or resource-intensive operations can exhaust available memory resources.
  Memory Leaks: Applications or processes that do not release memory properly can lead to exhaustion of available memory.
  
  Solution:
  
  Increase Memory Allocation: Review and increase the memory settings in the SAP system configuration. This can involve adjusting parameters such as abap/heap_area_total, abap/heap_area_dia, and abap/heap_area_nondia.
  Monitor System Performance: Use transaction codes like ST02 (Tune Summary) and ST03 (Workload Analysis) to monitor memory usage and identify any bottlenecks or high memory consumption areas.
  Optimize Code: If the error is related to a specific program or transaction, review the code for inefficiencies or memory leaks and optimize it accordingly.
  Check Background Jobs: If the error occurs during background processing, check the background jobs for any that may be consuming excessive memory and adjust their scheduling or resource allocation.
  Restart the System: In some cases, a system restart may help clear temporary memory issues and free up resources.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that address this specific error or related memory management issues.
  
  Related Information:
  
  SAP Memory Management: Understanding how SAP manages memory can help in troubleshooting. SAP uses different memory areas for different types of processes (dialog, background, etc.).
  Transaction Codes: Familiarize yourself with transaction codes like ST02, ST03, SM37 (for job monitoring), and SM50 (for process overview) to analyze memory usage and system performance.
  SAP Community: Engaging with the SAP Community can provide insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.