I have 2 sun machines(ultra 5) in my lab at home.
I'm fairly a newbie to UNIX Admin. and have been studying RAC on my own for some time now.

What I would like to do is to use those 2 machines to implement 9i RAC. Is this possible? If so What else(software/hardware,etc) do I need to make this possible.

I don't mind erasing everything from these machines and start all over again