How To Fix ITS_P027 - New session was refused due to memory bottleneck

SAP Error Message - Details

• Message type: E = Error

• Message class: ITS_P - Web Gui Plug-In

• Message number: 027

• Message text: New session was refused due to memory bottleneck

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ITS_P027 - New session was refused due to memory bottleneck ?

  The SAP error message "ITS_P027 New session was refused due to memory bottleneck" typically indicates that the Internet Transaction Server (ITS) is unable to allocate sufficient memory to create a new session. This can occur due to various reasons, including high server load, insufficient memory allocation, or configuration issues.
  Causes:
  
  High Load: The server may be experiencing a high number of concurrent sessions, leading to memory exhaustion.
  Insufficient Memory: The server may not have enough physical or virtual memory allocated to handle the current load.
  Configuration Issues: The ITS configuration may not be optimized for the current usage patterns, leading to inefficient memory usage.
  Memory Leaks: There could be memory leaks in the application or the server, causing memory to be consumed without being released.
  Resource Limits: Operating system-level resource limits (like ulimit in Unix/Linux) may restrict the amount of memory that can be allocated.
  
  Solutions:
  
  Monitor Server Load: Use monitoring tools to check the current load on the server and identify if it is consistently high.
  Increase Memory Allocation: If the server has the capacity, consider increasing the memory allocated to the ITS or the underlying application server.
  Optimize Configuration: Review and optimize the ITS configuration settings. This may include adjusting parameters related to session handling and memory management.
  Check for Memory Leaks: Use profiling tools to identify and fix any memory leaks in the application or server.
  Scale Resources: If the application is expected to handle a high number of concurrent users, consider scaling up the server resources or distributing the load across multiple servers.
  Review Operating System Limits: Check and adjust any operating system-level limits that may be affecting memory allocation.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to ITS performance and memory management for specific recommendations and patches.
  System Logs: Review system logs for any additional error messages or warnings that may provide more context about the memory bottleneck.
  Performance Tuning: Consider conducting a performance tuning exercise to identify bottlenecks in the application or server configuration.
  Documentation: Refer to the official SAP documentation for best practices on configuring and managing the Internet Transaction Server.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the "ITS_P027 New session was refused due to memory bottleneck" error and improve the performance of your SAP ITS environment.