Web page expiry after 1 hour

Hi,

we have developed web application in sun javastudio creator and deploed on tomcat 5.5 also we have configured its session 180 (3 hrs.)in tomcat web.xml.

we are running some database procedures constantly.

The web page (jsp) exactly after 1 hour gets expired ,still tomat is running.

Please resolve , we are moving to production.

Please help us out

[388 byte] By [anikhindia] at [2007-11-27 6:17:21]