APEX

Hello community,
i have a functional login process which uses my own login with username and password. After login i branch to application start page, but this session now is different from the start login session, so every login is invalid and will branch to authentication scheme invalid page.

My login url is: f?p=100:100:123456

After correct login (i have tested in the database with a lot of inserts into tmp_table)
i want to branch with the standard login procedure wwv_flow_custom_auth_std.login() to page 1000.

The correct url is shown in the browser, but the current page is the login page 100, because (i think) the session is invalid. In the authentication theme the invalid session page is set to page 100.
I have tested several pages and always this page is branched.
So im shure, that the session state is always invalid after login.

But why ????

Has anyone an idea ?

Thank you for responding.

Frank