Change Process to:
wwv_flow_custom_auth_std.login( P_UNAME => :101_USERNAME, P_PASSWORD => :101_PASSWORD, P_SESSION_ID => v('APP_SESSION'), P_FLOW_PAGE => :APP_ID||':9' );
Whenever somebody logs in we want him to go to page 9.
2) Shared Components > Security > Edit Security Attributes
Change the Home Link to: f?p=&APP_ID.:9:&SESSION.
in oracle apex 4.2 the path used for change the Home Link changed to the following path:
Shared Components >User Interface Attributes > Click: Desktop link or Mobile -> change value in “Home URL”