The cat is now out of the bag here at JavaOne/OpenWorld : Oracle Public Cloud is here.
This cloud is very complete with an Oracle Database service, a Java PaaS service, Fusion HCM and CRM apps, and even a social network. Of course with integrated identity, and full manageability with Oracle Enterprise Manager this is obviously meant to be an enterprise cloud.
All this is available for a monthly fee with a 30-day trial. Check it out.