How To Fix VIRT428 - Memory Assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 428

• Message text: Memory Assigned

What causes this issue?

On Hyper-V: the amount of physical memory (RAM) currently assigned to
the virtual machine by the hypervisor.
This value is valid with activated Dynamic Memory only.

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 VIRT428 - Memory Assigned ?

  The SAP error message VIRT428, which indicates "Memory Assigned," typically occurs when the SAP system is unable to allocate the required memory for a process. This can happen due to various reasons, including insufficient memory resources on the server, configuration issues, or limitations set within the SAP system itself.
  Causes of VIRT428 Error
  
  
  Insufficient Physical Memory: The server may not have enough physical memory (RAM) available to meet the demands of the SAP processes.
  
  
  Memory Configuration: The SAP memory parameters (like abap/heap_area_dia, abap/heap_area_nondia, etc.) may not be configured optimally for the workload.
  
  
  Operating System Limits: The operating system may impose limits on the amount of memory that can be allocated to a single process.
  
  
  High Load: A sudden increase in user load or background jobs can lead to memory exhaustion.
  
  
  Memory Leaks: Certain programs or transactions may have memory leaks, causing them to consume more memory over time.
  
  
  Solutions to VIRT428 Error
  
  
  Increase Physical Memory: If the server is running low on physical memory, consider adding more RAM to the server.
  
  
  Adjust SAP Memory Parameters: Review and adjust the SAP memory parameters in the instance profile. You can use transaction RZ10 to modify the instance profile settings. Key parameters to check include:
  
  abap/heap_area_dia
  abap/heap_area_nondia
  abap/heap_area_total
  
  
  
  Monitor Memory Usage: Use transaction ST02 (Tune Summary) to monitor memory usage and identify any areas where memory is being consumed excessively.
  
  
  Check Operating System Settings: Ensure that the operating system settings allow for sufficient memory allocation. This may involve adjusting kernel parameters or system limits.
  
  
  Review Background Jobs: Check for any long-running or resource-intensive background jobs that may be consuming excessive memory. Optimize or schedule them during off-peak hours.
  
  
  Analyze Code for Memory Leaks: If specific programs are causing the issue, analyze the code for potential memory leaks and optimize it accordingly.
  
  
  Restart the SAP Instance: In some cases, a simple restart of the SAP instance can free up memory and resolve temporary issues.
  
  
  Related Information
  
  
  SAP Notes: Check SAP Notes related to memory management and the VIRT428 error for specific guidance and updates. You can search for relevant notes in the SAP Support Portal.
  
  
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  
  
  System Monitoring Tools: Utilize SAP's monitoring tools (like Solution Manager) to keep track of system performance and memory usage over time.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the VIRT428 error and improve the overall performance of your SAP system.