The ADMINIDLETIMEOUT option specifies the amount of time, in minutes, that an administrative client session can be idle before the server cancels the session.
If there is a heavy network load in your environment, you might want to increase the time-out value to prevent administrative clients from timing out. However, a large number of idle sessions could prevent other users from connecting to the server.
You can update this server option without stopping and restarting the server by using the SETOPT command. See SETOPT (Set a server option for dynamic update).
adminidletimeout 20