How To Fix RT605 - &1 &3 > &2 &3 (15 Min.) Number of paged out pages exceeds threshold

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 605

• Message text: &1 &3 > &2 &3 (15 Min.) Number of paged out pages exceeds threshold

What causes this issue?

Paging Out occurs when a process requires access to data that is not
currently in the main memory while the main memory is full. Before the
operating system can page in the requested data, it must swap out other
pages that are currently not required.

System Response

In principle, paging always reduce performance. Paging out is
especially critical: If the Virtual Memory Management has to store a
page in the Swap Space several times, it leads to a memory bottleneck
that significantly reduces performance. The critical level of paging
out depends on the operaitng system.
If the paging out is higher than the paging in, the system increases
the size of the paging file - the main memory's overload.

How to fix this error?

High levels of paging can have the following causes:
Too many processes are running on the server
The server's main memory is too small for the current demand
You can avoid high levels of paging by taking the following measures:
Better distribution of running processes to various servers
Better distribution of running processes to periods of low load
Install more main memory

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 RT605 - &1 &3 > &2 &3 (15 Min.) Number of paged out pages exceeds threshold ?

  The SAP error message RT605 indicates that the number of paged-out pages in the system has exceeded a predefined threshold. This typically relates to memory management within the SAP system, particularly in the context of the SAP kernel and the underlying database.
  Cause:
  
  Memory Pressure: The system is experiencing high memory usage, leading to excessive paging. This can occur when there are not enough resources (RAM) allocated to the SAP instance, or when the workload is too high for the available memory.
  Configuration Issues: The SAP instance may not be optimally configured for the workload it is handling. This includes parameters related to memory allocation, buffer sizes, and paging thresholds.
  High Workload: A sudden increase in user activity or background jobs can lead to increased memory consumption, causing the system to page out more memory than usual.
  Inefficient Queries: Poorly optimized database queries can consume excessive memory, leading to paging issues.
  
  Solution:
  
  Increase Memory Allocation: If possible, increase the physical memory (RAM) available to the SAP instance. This can help reduce paging and improve performance.
  Tune SAP Parameters: Review and adjust SAP memory parameters such as abap/heap_area_total, abap/heap_area_dia, and abap/heap_area_nondia to ensure they are set appropriately for your workload.
  Monitor Workload: Use transaction codes like ST03N or ST04 to monitor system performance and identify any spikes in workload or memory usage. This can help in diagnosing the root cause of the paging issue.
  Optimize Queries: Analyze and optimize any long-running or resource-intensive database queries that may be contributing to high memory usage.
  Check for Background Jobs: Review background jobs running in the system to ensure they are not consuming excessive resources. Consider scheduling them during off-peak hours.
  Review Operating System Settings: Ensure that the operating system is configured to handle memory efficiently. This may include adjusting swap space settings or other OS-level memory management configurations.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and performance tuning for specific recommendations and best practices.
  Monitoring Tools: Utilize SAP monitoring tools like SAP Solution Manager or third-party monitoring solutions to gain insights into system performance and memory usage.
  Documentation: Refer to SAP documentation for guidelines on memory management and performance tuning specific to your SAP version and database.
  
  By addressing the underlying causes of the paging issue and implementing the suggested solutions, you can mitigate the RT605 error and improve the overall performance of your SAP system.