Why did you chose Oracle? It's rather obscure, though I understand it's a derivative RedHat Enterprise Linux. Unless there's a specific reason you want Oracle Enterprise Linux then you might be better off with something more commonly used like openSUSE or Ubuntu.
Anyway, do you have a network connection configured at all? What's the output of
I think the GUI tool to configure the network in RedHat is
so maybe it's the same in Oracle.
In these situations it's a good idea to list what you have already done to attempt to solve the problem before you posted so people don't suggest stuff you already tried.