To me the issue looks like ActiveX is blocking Java.

Out-of-date ActiveX control blocking is turned off in the Local Intranet Zone and Trusted Sites Zone. So the question for you is this:

Is your Oracle url added to the local intranet?

If not then please add that first and see if the problem is fixed.

IE->Internet Options->Security (tab)->Sites(button)->Advanced (button)

Add the url and save the work. Restart IE.

If this does not work then we will move forward.
Thanks