The web.xml file for Tomcat specifies how long an Administration Console session can remain inactive before the session times out. The administrators must authenticate again if they are inactive for more than the specified time. The default value is 30 minutes.
Perform the following steps to change this value:
Open the web.xml file.
Search for the <session-timeout> parameter.
Modify the value and save the file.
For information about how to edit a file, see Modifying Configurations.