What are the Pros and Cons of OVM vs Esxi?
Oracle OVM is replaced by oracle OLVM. KVM replace XEN. oracle is cheaper than VMware and Oracle allows hard partioning on their products. So the license costs for the Oracle database or WebLogic server can be reduced.
VMware is more popular. OVM or better OLVM is good for Oracle products because provides "hard paritioning".
I am just a newbie in Red Hat/Linux VM - KVM. I don’t think I can be of help here. You could ask one of the EU Red Hat representatives from the business card included for better help.
I recommend VMware, which is stable when putting it to production, you just need a server with enough memory and you will realize that VMware is the one.