How To Fix RT068 - Application server: Number of logged-on users

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 068

• Message text: Application server: Number of logged-on users

What causes this issue?

This monitoring tree element shows the number of users logged on to a
particular application server.
Users are automatically distributed at logon to application servers
according to the quality (response time) at each server and according to
any logon groups that you have created.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

You can use this information to check the effectiveness of your logon
groups. If, for example, a logon group does not offer enough servers
for the number of users of the group, then you will be able to see the
imbalance in logons per server across your system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RT068 - Application server: Number of logged-on users ?

  The SAP error message RT068 indicates that the number of logged-on users has reached the limit set for the application server. This can occur in environments where there are restrictions on the number of concurrent users that can be logged into a particular application server instance.
  Cause:
  
  User Limit Reached: The primary cause of this error is that the maximum number of users allowed to log on to the application server has been reached. This limit is defined in the SAP system configuration.
  Configuration Settings: The settings for the maximum number of users can be configured in the instance profile of the application server.
  Session Management: If users do not log off properly or if there are many idle sessions, it can lead to reaching the user limit.
  
  Solution:
  
  
  Increase User Limit:
  
  You can increase the maximum number of users allowed to log on to the application server by modifying the instance profile.
  Go to the SAP system profile parameters (transaction code RZ10) and look for the parameter rdisp/mshost or rdisp/num_abap.
  Adjust the value to allow more users to log in.
  
  
  
  Log Off Idle Users:
  
  Check for any idle or inactive sessions and log them off to free up space for new users.
  You can use transaction code SM04 to monitor active users and sessions.
  
  
  
  Load Balancing:
  
  If you have multiple application servers, consider implementing load balancing to distribute user sessions across different servers, which can help alleviate the issue.
  
  
  
  Session Timeout Settings:
  
  Review and adjust session timeout settings to ensure that inactive sessions are terminated after a certain period, freeing up resources for new users.
  
  
  
  Monitor User Activity:
  
  Regularly monitor user activity and session usage to identify patterns that may lead to reaching the user limit.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM04: Monitor active users and sessions.
  RZ10: Change instance profile parameters.
  RZ11: Display and change profile parameters dynamically.
  
  
  
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to user limits and session management.
  
  
  Documentation: Refer to SAP documentation for detailed information on user management and system configuration.
  
  
  By following these steps, you should be able to resolve the RT068 error and manage user sessions more effectively in your SAP environment.