DMZ/External URL redirecting to Internal SSO login page

Issue :
In EBS 12.2, External URL pointing to SSO even though external node not registered with OID. Instead of pointing to SSO URL, external login URL should redirect to AppsLocalLogin.jsp

Cause: 
In EBS 12.2 and Later, intergration of SSO/OID/OAM/OIM can be done at site level only and not at server level. We can have a separate OID/OAM for external users and register the external node with the OID/OAM intended for external users.


Fix:
In all cases, since integration is done at site level, by default the external URL also redirects to SSO URL. To avoid that, update the s_login_page context variable on external node to point to http://hostname:port/OA_HTML/AppsLocalLogin.jsp.

In EBS 12.2 with DMZ, internal URL is redirecting to external and vice versa.

Issue : In EBS 12.2 with DMZ, internal URL is redirecting to external and vice versa.

Cause : When autoconfig has been run on internal, external and internal nodes; entries of external node are added in mod_wl_ohs.conf which is causing the URL to redirect while login.

Fix : Make sure the mod_wl_ohs.conf does not have entries of the external node in internal application tier and vice versa. Take a backup and remove them manually (if any).
And restart the services and check.