How to remove Bean from session upon leaving the web page?

Hi...
I got the following problem
I promote a user with a Datatable filled with data, each time the user enters the webpage with the table I go the DB and retrieve all relevant data again (so each time the user gets an OnLine representation of the DB)
to archive that I defined the bean that pulls data from DB in Request scope. and it worked well... but now i added an option to export the table into Pdf made by a servlet.... now to be able to get the bean from the servlet i had to change the scope of the Bean to Session Scope... and all works fine.. BUT... now the page not showing OnLine representation of the DB.. cause its only created once , cause its inside Session Scope...
My question is how can I remove the Bean from Session scope upon the user leaving the page (I don't want to remove the bean from session scope on the next called bean of the other page) i want to remove the Bean upon leaving the current web page... Or maybe force the constructor to be executed each time the Page is loaded (as if it was a Request scope bean)....
Any ideas?
Thanks ahead!
Daniel.

Hi,
When you are moving to another page, you are performing an action right ?
(i mean the request moving to Server side), if you do so, then clear the bean object values list.
for example :
private List<Integer> intList = new ArrayList<Integer>();
public void clear()
intList.clear();
or
store a new object in session, when ever u moved to the second page, so that the old object will be no longer
in use, so it will be garbage collected.Regards,
Sathya.

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