How To Fix VIRT340 - Min. Unreferenced Interval Count

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 340

• Message text: Min. Unreferenced Interval Count

Min. Unreferenced Interval Count
The average high unreferenced interval count (UIC) is an indicator of
central storage contention. A low UIC count indicates that storage
contention is high and you might experience storage problems. (Minimum
value within the last collection interval)

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VIRT340 - Min. Unreferenced Interval Count ?

  The SAP error message VIRT340: Min. Unreferenced Interval Count typically relates to issues with the SAP system's virtual memory management, particularly in the context of the SAP kernel and its interaction with the operating system's memory allocation.
  Cause:
  The error message indicates that the minimum unreferenced interval count has been reached. This can occur due to several reasons, including:
  
  Memory Configuration Issues: The SAP system may not have enough memory allocated to handle the current workload, leading to inefficient memory management.
  High Load: A sudden increase in workload or transactions can lead to memory being consumed faster than it can be released.
  Memory Leaks: There may be a memory leak in the application or in the SAP kernel, causing memory to be consumed without being released.
  Improper System Settings: The configuration settings for memory management in the SAP system may not be optimized for the current environment.
  
  Solution:
  To resolve the VIRT340 error, consider the following steps:
  
  
  Check Memory Allocation:
  
  Review the memory settings in the SAP profile parameters (e.g., abap/heap_area_total, abap/heap_area_dia, etc.) and ensure they are set appropriately for your system's workload.
  Increase the memory allocation if necessary.
  
  
  
  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.
  Check for any long-running transactions or background jobs that may be consuming excessive memory.
  
  
  
  Review and Optimize Code:
  
  If you suspect a memory leak, review custom ABAP code or third-party add-ons for inefficiencies or memory leaks.
  Optimize the code to ensure that memory is being released properly after use.
  
  
  
  Adjust Kernel Parameters:
  
  Review and adjust kernel parameters related to memory management. Consult SAP Notes or documentation for recommended settings based on your version and environment.
  
  
  
  System Restart:
  
  In some cases, a system restart may help clear up memory issues temporarily, but this should not be a long-term solution.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Engage SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. They can provide more tailored guidance based on your specific system configuration and logs.
  
  
  
  Related Information:
  
  Transaction Codes: ST02, ST03, SM50, SM66 (for monitoring processes), and SM21 (for system logs).
  SAP Notes: Search for specific SAP Notes related to VIRT340 or memory management issues in the SAP Support Portal.
  Documentation: Review SAP documentation on memory management and performance tuning for your specific SAP version.
  
  By following these steps, you should be able to diagnose and resolve the VIRT340 error effectively.