How To Fix RT060 - Available Swap Space

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 060

• Message text: Available Swap Space

What causes this issue?

This monitoring tree element (MTE) shows the absolute amount of swap
space available in a particular host system.
Swap space is the amount of disk storage available for swapping or
paging out data from main memory. Because of its high-performance
memory management design, the SAP system makes intensive use of swap
space.

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?

A swap space alert means that swap space is becoming critically short in
your system. Exhausting swap space in a system that is hosting an SAP
application server causes severe problems in the system. There should
always be a minimum of 100 MB of free swap space on a system that is
hosting an application server or database.
See the memory management documentation (Help -> SAP Library, SAP
NetWeaver -> ABAP Technology -> Client/Server Technology -> SAP Memory
Management) for help in preventing and correcting swap space problems.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RT060 - Available Swap Space ?

  The SAP error message RT060, which indicates "Available Swap Space," typically arises when the system is running low on available swap space. This can lead to performance issues or even system crashes if not addressed. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Insufficient Swap Space: The system has not been allocated enough swap space to handle the current workload.
  High Memory Usage: Applications or processes running on the server may be consuming a significant amount of memory, leading to a shortage of available swap space.
  Configuration Issues: The swap space may not be configured correctly, or the system may not be utilizing the available swap space efficiently.
  Memory Leaks: Certain applications may have memory leaks, causing them to consume more memory over time without releasing it.
  
  Solutions:
  
  
  Increase Swap Space:
  
  Linux: You can increase swap space by creating a new swap file or partition. For example:
  sudo fallocate -l 4G /swapfile
  sudo chmod 600 /swapfile
  sudo mkswap /swapfile
  sudo swapon /swapfile
  
  Windows: Adjust the virtual memory settings in the system properties to increase the paging file size.
  
  
  
  Monitor and Optimize Memory Usage:
  
  Use tools like top, htop, or vmstat on Linux to monitor memory usage and identify processes consuming excessive memory.
  On Windows, use Task Manager or Resource Monitor to check memory usage.
  
  
  
  Review and Optimize SAP Configuration:
  
  Check SAP parameters related to memory allocation (e.g., abap/heap_area_total, abap/heap_area_dia, etc.) and adjust them as necessary.
  Ensure that the SAP instance is configured to use the available memory efficiently.
  
  
  
  Restart Services:
  
  If specific processes are consuming too much memory, consider restarting those services or the entire SAP system to free up memory.
  
  
  
  Check for Memory Leaks:
  
  Investigate any custom code or third-party applications that may be causing memory leaks and address them accordingly.
  
  
  
  Upgrade Hardware:
  
  If the system consistently runs out of memory, consider upgrading the server's RAM or adding additional swap space.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and performance tuning for specific recommendations based on your SAP version.
  Operating System Documentation: Refer to the documentation for your operating system for best practices on managing swap space.
  Performance Monitoring Tools: Utilize SAP's performance monitoring tools (like ST03N, ST06) to analyze system performance and identify bottlenecks.
  
  By addressing the underlying causes of the RT060 error and implementing the suggested solutions, you can help ensure that your SAP system runs smoothly and efficiently.