How To Fix D4436 - Paging: Non-database page faults per second

SAP Error Message - Details

• Message type: E = Error

• Message class: D4 - DB2/400 specific messages

• Message number: 436

• Message text: Paging: Non-database page faults per second

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message D4436 - Paging: Non-database page faults per second ?

  The SAP error message D4436, which indicates "Paging: Non-database page faults per second," is related to performance issues in the SAP system, particularly concerning memory management. This message typically arises when the SAP system is experiencing a high number of non-database page faults, which can indicate that the system is struggling to manage its memory effectively.
  Cause:
  
  Insufficient Memory Allocation: The SAP instance may not have enough memory allocated to handle the workload, leading to excessive paging.
  High Workload: An increase in user activity or background jobs can lead to more memory being used than what is available.
  Memory Leaks: Certain applications or processes may not be releasing memory properly, causing the system to run out of available memory.
  Configuration Issues: Incorrect configuration of the SAP memory parameters (like abap/heap_area_total, abap/heap_area_dia, etc.) can lead to inefficient memory usage.
  Operating System Limits: The underlying operating system may have limits on memory usage that are being hit.
  
  Solution:
  
  Increase Memory Allocation: Review and increase the memory settings for the SAP instance. This can be done by adjusting the profile parameters in the instance profile.
  Monitor Workload: Use transaction codes like ST03N or ST06 to monitor system performance and workload. Identify any spikes in usage and consider load balancing or scheduling jobs during off-peak hours.
  Check for Memory Leaks: Use tools like transaction ST22 (dump analysis) and SM21 (system log) to check for any memory leaks or issues in the application code.
  Optimize Configuration: Review and optimize the SAP memory parameters. Ensure that they are set according to the best practices for your specific SAP version and workload.
  Operating System Tuning: Check the operating system settings for memory limits and adjust them if necessary. Ensure that the system has enough physical memory and swap space.
  Upgrade Hardware: If the system consistently runs out of memory, consider upgrading the hardware to provide more RAM.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and performance tuning for specific recommendations and best practices.
  SAP Performance Tuning: Familiarize yourself with SAP performance tuning guides that provide insights into optimizing memory usage and system performance.
  Monitoring Tools: Utilize SAP monitoring tools like SAP Solution Manager or third-party monitoring solutions to keep an eye on system performance and memory usage trends.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the D4436 error and improve the overall performance of your SAP system.