Configuring Tomcat session timeout
By default, the session timeout is set to 30 minutes.
To change the Tomcat session timeout, edit the $TOMCAT_HOME/conf/web.xml and change the values in the session section:
<!-- You can set the default session timeout (in minutes) for all newly --><!-- created sessions by modifying the value below. --><session-config> <session-timeout>30</session-timeout></session-config>