[jsp] How do I set session timeout of greater than 30 minutes

if you are allowed to do it globally then you can set the session time out in

TOMCAT_HOME/conf/web.xml as below

 <!-- ==================== Default Session Configuration ================= -->
  <!-- You can set the default session timeout (in minutes) for all newly   -->
  <!-- created sessions by modifying the value below.                       -->


<session-config>
        <session-timeout>60</session-timeout>
</session-config>