You Are Trying To Access a Page That Is No Longer Active.The Referring Page May Have Come From a Previous Session. Please Select Home To Proceed

Shahed pinged me about this error.  It was coming after logging in.  This R12.1.3 instance had just migrated from an old server to a new one. Once you logged in this error would be displayed:

You Are Trying To Access a Page That Is No Longer Active.The Referring Page May Have Come From a Previous Session. Please Select Home To Proceed

The hits on support.oracle.com were not helpful, but a gave a clue that it may have something to do with session cookie.  So I used Firefox to check http headers.  If you press Ctrl+Shift+K, you will get a panel at the bottom of the browser. Click on Network tab, click on the AppsLocalLogin.jsp and on the right side of the pane, you'll see a cookie tab.

The domain appearing in the cookie tab was from the old server.  So I checked:

select session_cookie_domain from icx_parameters;
olddomain.justanexample.com

So I nullified it:

update icx_parameters set session_cookie_domain=null;

commit;

Restarted Apache

cd $ADMIN_SCRIPTS_HOME
adapcctl.sh stop
adapcctl.sh start

No more error.  I was able to log in and so was Shahed.