How To Fix GW466 - Maximum number of connections reached; try logging on later

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 466

• Message text: Maximum number of connections reached; try logging on later

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 GW466 - Maximum number of connections reached; try logging on later ?

  The SAP error message GW466: Maximum number of connections reached; try logging on later typically indicates that the maximum number of allowed connections to the SAP Gateway has been reached. This can happen in environments where many users are trying to access the system simultaneously, or if there are lingering connections that have not been properly closed.
  Causes:
  
  High User Load: Too many users are trying to connect to the SAP system at the same time.
  Lingering Connections: Connections that are not properly terminated may still be counted against the maximum limit.
  Configuration Limits: The SAP Gateway may be configured with a low limit for the maximum number of connections.
  Network Issues: Network problems can cause connections to hang, leading to a higher number of active connections than expected.
  
  Solutions:
  
  
  Increase Maximum Connections:
  
  You can increase the maximum number of connections allowed by adjusting the configuration in the SAP system. This is typically done in the instance profile parameters.
  The parameter to look for is gw/max_conn. You can increase this value to allow more connections.
  
  
  
  Monitor and Terminate Idle Connections:
  
  Use transaction SM04 (User Overview) or SMGW (Gateway Monitor) to monitor active connections.
  Identify and terminate any idle or unnecessary connections.
  
  
  
  Check for Long-Running Sessions:
  
  Investigate if there are any long-running sessions that are holding onto connections. You can use transaction SM50 (Process Overview) to check for long-running processes.
  
  
  
  Review System Logs:
  
  Check the system logs for any errors or warnings that might indicate issues with the Gateway or network.
  
  
  
  Schedule Off-Peak Logins:
  
  If possible, schedule heavy usage during off-peak hours to reduce the load on the system.
  
  
  
  Consult Basis Team:
  
  If you are not able to resolve the issue, consult your SAP Basis team for further analysis and assistance.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error.
  Documentation: Review SAP documentation regarding Gateway configuration and connection management.
  Performance Monitoring: Implement performance monitoring tools to keep track of connection usage and system performance.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the GW466 error and improve the overall connectivity to your SAP system.