How To Fix ICM505 - Current number of open connections

SAP Error Message - Details

• Message type: E = Error

• Message class: ICM - Messages for ICM Monitor

• Message number: 505

• Message text: Current number of open connections

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 ICM505 - Current number of open connections ?

  The SAP error message ICM505 typically indicates that the Internet Communication Manager (ICM) has reached the maximum number of open connections allowed. This can happen in scenarios where there are many concurrent users or processes trying to access the SAP system, leading to resource exhaustion.
  Cause:
  
  High Traffic: A sudden increase in user requests or background jobs can lead to a spike in open connections.
  Configuration Limits: The maximum number of connections allowed by the ICM may be set too low for the current usage patterns.
  Resource Leaks: There may be issues in the application or configuration that are causing connections to not close properly.
  Network Issues: Problems in the network can lead to connections being held open longer than necessary.
  
  Solution:
  
  
  Increase Maximum Connections:
  
  You can increase the maximum number of connections allowed by adjusting the ICM parameters in the SAP profile. The relevant parameters are:
  
  icm/max_conn: This parameter defines the maximum number of connections that the ICM can handle.
  icm/conn_timeout: This parameter defines the timeout for idle connections.
  
  
  To change these parameters, you can use transaction RZ10 to edit the instance profile and then restart the ICM.
  
  
  
  Monitor and Optimize Usage:
  
  Use transaction SMICM to monitor the current connections and analyze the usage patterns.
  Identify any long-running transactions or processes that may be holding connections open unnecessarily.
  
  
  
  Check for Resource Leaks:
  
  Review the application code and configuration for any potential resource leaks that may be causing connections to remain open.
  Ensure that all connections are properly closed after use.
  
  
  
  Load Balancing:
  
  If applicable, consider implementing load balancing to distribute the load across multiple application servers, which can help reduce the number of connections to a single ICM instance.
  
  
  
  Review Network Configuration:
  
  Ensure that there are no network issues that could be causing connections to hang or not close properly.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to ICM issues.
  Documentation: Refer to the official SAP documentation for ICM configuration and performance tuning.
  Monitoring Tools: Utilize SAP monitoring tools like Solution Manager or other third-party tools to keep track of system performance and connection usage.
  
  By addressing the underlying causes and optimizing the configuration, you can resolve the ICM505 error and improve the overall performance of your SAP system.