Actually my requirement is to hide the url(ie...session id ,application id) in address bar...
and we can work on apex through hosted environment ie oracle providing (http://apex.oracle.com/)
or locally which is known by everyone ...
You should not use http://apex.oracle.com/ for production applications
Hiding app_id, session_id etc. from URL - it's been discussed several time in forum, see Nicer URL for an Oracle APEX application | Inside Oracle APEX by Patrick Wolf
for more examples, see http://www.google.co.in/search?sourceid=chrome&ie=UTF-8&q=nice+apex+urls