If you want to learn about basics of Oracle running on VMware vSphere, check out the video below where Jeff Browning and I discuss the concepts to do this.
First, consider running both RAC and non-RAC implementations on virtualized infrastructure, which could lead to reduced licensing costs. Take advantage of the innate resource management capabilities in vSphere which may lead to further cost reduction and simplicity. Also, implement the system's controls to allow for the satisfaction of HA and Performance SLAs with minimal setup effort and greater system impact. These are just some of the highlights.
To learn more and to read the entire article at its source, please refer to the following page, VMware Global Alliances Blog: EMC and VMware – Virtualizing Business Critical Applications- VMware Blogs