How To Fix 00631 - Maximum number of SAP gateways reached

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 631

• Message text: Maximum number of SAP gateways 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 00631 - Maximum number of SAP gateways reached ?

  The SAP error message "00631 Maximum number of SAP gateways reached" indicates that the maximum number of SAP gateway connections has been reached. This typically occurs when the number of active connections to the SAP system exceeds the configured limit, preventing new connections from being established.
  Causes:
  
  High User Load: A large number of users or processes trying to connect to the SAP system simultaneously.
  Configuration Limits: The SAP gateway has a predefined limit on the number of concurrent connections, which may be set too low for the current usage.
  Unreleased Connections: Connections that are not properly closed or released can accumulate, leading to the maximum limit being reached.
  Network Issues: Problems in the network can cause connections to hang, which may also contribute to reaching the maximum limit.
  
  Solutions:
  
  
  Increase Gateway Limit:
  
  You can increase the maximum number of allowed connections by adjusting the parameter gw/max_conn in the SAP profile. This requires access to the SAP system configuration and may need a restart of the SAP instance.
  To change this parameter, you can use transaction RZ10 to edit the instance profile.
  
  
  
  Monitor and Manage Connections:
  
  Use transaction SM04 to monitor active user sessions and identify any users or processes that are holding connections unnecessarily.
  Use transaction SMGW to monitor the SAP gateway and check the number of active connections.
  
  
  
  Close Idle Connections:
  
  Identify and terminate idle or inactive sessions that are no longer needed. This can help free up connections for new users.
  
  
  
  Review Application Logic:
  
  If specific applications or processes are causing excessive connections, review their logic to ensure they are efficiently managing connections.
  
  
  
  Network Configuration:
  
  Ensure that network configurations are optimized to prevent connection issues that could lead to hanging connections.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error. SAP frequently updates its knowledge base with solutions for common issues.
  Documentation: Review the SAP Basis documentation for detailed information on configuring the SAP gateway and managing connections.
  Performance Monitoring: Implement performance monitoring tools to keep track of connection usage and system performance, which can help in proactive management of the SAP environment.
  
  By addressing the underlying causes and implementing the suggested solutions, you can resolve the "Maximum number of SAP gateways reached" error and improve the overall performance and reliability of your SAP system.