PortletSession.PortletScope value is not cleared when server is shutdown

[sridhar mam]

I have set a value into PortletSession's PORTLET_SCOPE. I am able to retrieve the value correctly. But, if my portal server is shutdown, and after restarting the server, if I access the value, i am seeing the old value set before shutdown of the server. I tried the same by setting value in APPLICATION_SCOPE, and this works fine.

MyPortlet:

--
int pageNum = 0;
//pageNum value is incremented/decremented by 1 based upon pagination clicks(Previous/Next)
--
PortletSession.setAttribute("pageNum", String.valueOf(pageNum)); //set the pageNum value into PortletSession's default scope - PORTLET_SCOPE

--

when "pageNum" value is 2, I shutdown the portal server, and restarted.

I logged into portal and when I access this variable, I am seeing pageNum value as "2".

If I repeat the same process, with APPLICATION_SCOPE, after restarting the server, pageNum value is "null".

Server: Tomcat 6 and Vignette Portal

Have you guys ever seen this?

thanks,
Sridhar