How To Fix ICM504 - Max. number of threads reached

SAP Error Message - Details

• Message type: E = Error

• Message class: ICM - Messages for ICM Monitor

• Message number: 504

• Message text: Max. number of threads reached

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ICM504 - Max. number of threads reached ?

  The SAP error message ICM504: Max. number of threads reached typically occurs in the Internet Communication Manager (ICM) when the maximum number of threads that can be created for handling requests has been reached. This can lead to performance issues or the inability to process new incoming requests.
  Causes:
  
  High Load: The system is experiencing a high volume of requests, which exceeds the configured maximum number of threads.
  Configuration Limits: The ICM is configured with a low maximum number of threads, which may not be sufficient for the current workload.
  Resource Constraints: The underlying operating system or hardware may have limitations on the number of threads that can be created.
  Long-Running Requests: If requests take a long time to process, they can occupy threads for extended periods, leading to exhaustion of available threads.
  Memory Issues: Insufficient memory can prevent the creation of new threads.
  
  Solutions:
  
  
  Increase Maximum Threads:
  
  You can increase the maximum number of threads in the ICM