>Thanks for your reply.
>
>I want the administrator able to see who already login and using the application. The administrator can terminate the user, who is using the application. This may change the value of the session. Can this be done by modifying the session stored in SQL Server? Or is there any better solution?

No and that's not what sessions are for. If you're using ASP.NET there are events that are associated with teh application and Session though that you can use to manage this on your own.

For for Session_Start Session_End or the OnSessionStart OnSession HttpApplication events.

+++ Rick ---