How To Fix S#374 - Maximum number of sessions reached

SAP Error Message - Details

• Message type: E = Error

• Message class: S# -

• Message number: 374

• Message text: Maximum number of sessions reached

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message S#374 - Maximum number of sessions reached ?

  The SAP error message S#374 "Maximum number of sessions reached" indicates that the maximum number of user sessions allowed for a particular user or for the entire SAP system has been reached. This can occur in various scenarios, such as when a user tries to log in while already having the maximum number of active sessions, or when the system itself has reached its configured limit for concurrent sessions.
  Causes:
  
  User-Specific Limit: Each user may have a limit on the number of concurrent sessions they can open. If a user tries to log in again without closing existing sessions, this error will occur.
  System-Wide Limit: The SAP system has a global limit on the number of concurrent sessions that can be active at any given time. If this limit is reached, no new sessions can be established.
  Configuration Settings: The limits for sessions can be configured in the system settings, and they may not be set high enough for the current usage patterns.
  Idle Sessions: Sometimes, sessions may remain open due to inactivity, which can contribute to reaching the maximum limit.
  
  Solutions:
  
  Close Existing Sessions: The user should log out of any existing sessions that are not in use. This can be done by using the transaction code SM04 (User Overview) to see active sessions and log off from there.
  Increase User Session Limit: If the user frequently needs more sessions, the administrator can increase the maximum number of sessions allowed for that user. This can be done in the user profile settings.
  Increase System-Wide Session Limit: If the system is reaching its overall session limit, the SAP Basis administrator can increase the maximum number of sessions allowed in the system configuration. This is typically done in the instance profile parameters (e.g., rdisp/mshost and rdisp/number_of_sessions).
  Monitor and Manage Sessions: Regularly monitor active sessions and manage them to ensure that idle sessions are closed. This can help prevent reaching the maximum limit.
  Check for Idle Sessions: Use transaction SM04 or AL08 to identify and terminate idle sessions that may be consuming session slots unnecessarily.
  
  Related Information:
  
  Transaction Codes: 
  
  SM04: User Overview - to view and manage user sessions.
  AL08: Global User Overview - to see all users logged into the system.
  
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to session management.
  Documentation: Refer to SAP Help documentation for detailed information on user management and session limits.
  
  By following these steps, you should be able to resolve the "Maximum number of sessions reached" error and manage user sessions effectively in your SAP environment.