How To Fix ITS058 - Peak of OS swap file usage

SAP Error Message - Details

• Message type: E = Error

• Message class: ITS - Messages for Agent-Based ITS Monitor

• Message number: 058

• Message text: Peak of OS swap file usage

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ITS058 - Peak of OS swap file usage ?

  The SAP error message ITS058, which indicates a "Peak of OS swap file usage," typically arises when the operating system's swap space (or virtual memory) is being heavily utilized. This can lead to performance issues and may affect the stability of the SAP system.
  Cause:
  
  
  High Memory Usage: The primary cause of this error is that the system is running out of physical memory (RAM), and the operating system is using swap space to compensate. This can happen due to:
  
  Insufficient physical memory for the workload.
  Memory leaks in applications or processes.
  High number of concurrent users or processes consuming memory.
  Inefficient memory management in the SAP application or other running services.
  
  
  
  Configuration Issues: Sometimes, the configuration of the SAP system or the underlying operating system may not be optimized for the workload, leading to excessive memory usage.
  
  
  Solution:
  
  
  Monitor Memory Usage: Use monitoring tools to analyze memory usage on the server. Identify processes that are consuming excessive memory and take appropriate action (e.g., optimizing queries, adjusting configurations).
  
  
  Increase Physical Memory: If the server is consistently running out of memory, consider upgrading the physical RAM to accommodate the workload.
  
  
  Optimize SAP Configuration: Review and optimize the SAP instance parameters related to memory allocation. This includes adjusting the buffer sizes and other memory-related settings in the SAP profile.
  
  
  Check for Memory Leaks: Investigate if there are any memory leaks in custom code or third-party applications that may be running on the server. Fixing these leaks can help reduce memory consumption.
  
  
  Adjust Swap Space: If increasing physical memory is not an option, consider increasing the swap space on the operating system. However, this is generally a temporary solution and may not resolve underlying performance issues.
  
  
  Review Workload: Analyze the workload on the system. If there are peak times with high user activity, consider load balancing or scheduling resource-intensive jobs during off-peak hours.
  
  
  System Restart: In some cases, a system restart may temporarily alleviate the issue, but it is not a long-term solution.
  
  
  Related Information:
  
  Operating System Logs: Check the operating system logs for any additional errors or warnings related to memory usage.
  SAP Notes: Look for relevant SAP Notes that may provide specific guidance or patches related to memory management and performance tuning.
  Performance Monitoring Tools: Utilize SAP's performance monitoring tools (like ST03N, ST06) to analyze system performance and identify bottlenecks.
  Documentation: Refer to SAP documentation for best practices on memory management and system configuration.
  
  By addressing the root causes of high swap file usage, you can improve the performance and stability of your SAP system.