How To Fix ICM603 - Number of used MPI buffers has exceeded the threshold value

ICM603 - Overview

• Message type: E = Error

• Message class: ICM - Messages for ICM Monitor

• Message number: 603

• Message text: Number of used MPI buffers has exceeded the threshold value

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ICM603 - Number of used MPI buffers has exceeded the threshold value ?

  The SAP error message ICM603 indicates that the number of used MPI (Message Passing Interface) buffers has exceeded a predefined threshold value. This typically occurs in the context of the Internet Communication Manager (ICM) in SAP systems, which handles HTTP requests and responses.
  
  Cause:
  
  High Load: The system is experiencing a high volume of requests, leading to an increased number of MPI buffers being utilized.
  
  Configuration Issues: The threshold for MPI buffers may be set too low for the current workload.
  Memory Leaks: There could be an underlying issue in the application or configuration that is causing memory leaks, leading to excessive buffer usage.
  Inefficient Code: Poorly optimized code or inefficient handling of requests can lead to excessive use of MPI buffers.
  
  
  Solution:
  
  
  Increase MPI Buffer Threshold:
  
  You can increase the threshold value for MPI buffers in the ICM configuration. This can be done by adjusting the parameter icm/HTTP/mpi_buffer_size in the SAP profile.
  Example: You can set it to