This is an interesting comment I found at http://tardate.blogspot.com/ about the perception of where oracle vm will go. I think it is very true.
“Virtualization – The announcement of Oracle VM may prove to be a blockbuster if it is widely adopted in practice, I think once it is fully integrated with Enterprise Manager. It promises to completely change the game for how we build and maintain applications and technology infrastructure – from the bare-metal up, from one vendor.”
Watch this space Enterprise Manager working with oracle vm virtual machines! My guess is that sometime in 2008 this will be ready.