How To Fix VIRT348 - Max. Pagein Rate

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 348

• Message text: Max. Pagein Rate

Max. Pagein Rate
The maximum rate of total system pages per second read into central
storage (within the last collection interval). The rate excludes
swap-in, vio and hiperspace page-ins.

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.

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• What is the cause and solution for SAP error message VIRT348 - Max. Pagein Rate ?

  The SAP error message VIRT348, which indicates "Max. Pagein Rate," typically relates to issues with memory management in the SAP system. This error occurs when the system exceeds the maximum allowed page-in rate, which can lead to performance degradation and instability.
  Cause:
  
  Memory Pressure: The system is experiencing high memory usage, leading to excessive paging. This can happen if there are too many processes running or if the allocated memory is insufficient for the workload.
  Configuration Issues: The SAP system may not be optimally configured for the available hardware resources, leading to inefficient memory usage.
  High Workload: A sudden spike in workload or inefficiently designed programs can lead to increased memory consumption.
  Insufficient Hardware Resources: The underlying hardware may not have enough RAM or CPU resources to handle the current workload.
  
  Solution:
  
  Increase Memory Allocation: If possible, increase the memory allocated to the SAP instance. This can be done by adjusting the instance profile parameters (e.g., abap/heap_area_total, abap/heap_area_dia, etc.).
  Optimize Workload: Analyze the workload and identify any long-running or resource-intensive transactions. Optimize these transactions or schedule them during off-peak hours.
  Review Configuration: Check the SAP instance configuration and ensure that it is optimized for the available hardware. This includes reviewing parameters related to memory management.
  Monitor System Performance: Use transaction codes like ST03N (Workload Analysis) and ST06 (Operating System Monitor) to monitor system performance and identify bottlenecks.
  Increase Hardware Resources: If the system consistently runs into memory issues, consider upgrading the hardware (adding more RAM or CPU resources).
  Adjust Paging Parameters: If applicable, adjust the operating system's paging parameters to better handle memory management.
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may provide additional insights or specific fixes related to the VIRT348 error.
  Transaction Codes: Familiarize yourself with transaction codes such as ST02 (Tune Summary) and SM50 (Process Overview) to monitor and manage memory usage.
  Performance Tuning: Regularly perform performance tuning and system checks to prevent memory-related issues from arising.
  Documentation: Refer to SAP documentation for best practices on memory management and system configuration.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the VIRT348 error and improve the overall performance of your SAP system.