You can define the session timeout for the Rational ClearQuest server by editing the filermmanager.properties.
C:\Program Files\Rational\ClearQuest\cqweb\cqserver\config\rmmanager.properties
/opt/rational/clearquest/cqweb/cqserver/config/rmmanager.properties
The default session timeout is 60 minutes. To change the timeout, modify the property SESSION_INACTIVE_LIFETIME_IN_CACHE such that its value is equal to or greater than the HTTP Session timeout value. (For details, see Modifying the HTTP session timeout setting.
It is possible to connect to multiple databases within the same session. If you leave one database to work on another and exceed the timeout period for the first database without any direct activity from your Web session, you must reconnect to that database.
For more information about setting timeouts in a Rational ClearQuest database, see the help on database configuration.