Session are not belong to pages, it seems you have set your scoop as request (request scoop is for a page invocation)
simply track your session with
request.getSession()
for example
in page 1:
<![CDATA[<%
request.getSession().setAttribute("name","value");
%>]]>
and then get the session values in page 2
<![CDATA[<%
String name=(String) request.getSession().getAttribute("name");
%>]]>
the default session timeout is 30 min while you can extend it, but for having long time data, use cookies instead