I am having the same trouble as well with 12.1.2
We used ADF framework and Jdeveloper 12.1.2 to construct our application and departmental constraints mean that we use basic authentication and login is handled external to the application at the F5 gateway.
We use Active Directory to assign group permissions.
In web.xml we set our session timeout to 30 minutes and this matches the F5 timeout.
I was a bit suspicious that this model is causing our Http session invalidations.
How do you do your authentication and manage timeouts?
the session was invalidated manual?
Hi , I have the same issue . Did anyone find a solution for this error please?