You mentioned "Site", do you mean Oracle WebCenter Portal and Oracle WebCenter Sites have been installed in the Same WebLogic Domain?
Yes, all the WebCenter package including WebCenter Content, WebCenter Portal and WebCenter Site has been installed in one domain, and exactly based on the oracle installation documents & recommendations.
Oracle WebCenter Portal & Content can be installed in the same WebLogic Domain. However, Oracle WebCenter Sites cannot be installed in the same domain as Oracle WebCenter Portal due to some classpath issues.
My recommendation (instead of fixing classpath issues manually) is that you install WebCenter Portal and Sites in separate WebLogic domains.
In addition, there is an article in MoS (My Oracle Support) where Oracle confirms that Portal and Sites must be installed in separate WebLogic Domains.
Thank you so much for your help. As I mentioned earlier, the portal server is in "RUNNING" mode and healthy as good as the WebCenter Content servers. In addition, you mentioned that oracle WebCenter Portal & Content can be installed in the same WebLogic domain. Finally, after starting the WebCenter Portal server, it goes to the "RUNNING" status, but when I try to access the portal via http://hostname:8888/webcenter, the login.jsp page isn't working (The full URL is: http://hostname:8888/webcenter/system/login.jsp, the login page can not be loaded; the error message is:
This page isn’t working
host is currently unable to handle this request.
HTTP ERROR 500
Kindly advise is it possible to load the portal login-page truly or not. If I uninstall the WebCenter Sites, then is it possible to load the portal login page?
Thank you again..
Uninstalling WebCenter Sites or having a fresh installation of Portal with Content in a separate domain will load the Login Page properly.