Happy New Year Everybody!

I am looking for certification information for Oracle 10gR2 64-bit, especially to see if RHEL 5.4 is certified for 10gR2 64-bit. On Oracle Support, I only found that "Linux x86-64 Red Hat Enterprise 5/Oracle VM" is certified. Does that mean I have to install Oracle VM on RHEL 5 to be certified? What would be the consequence without installing Oracle VM?

Thank you for advice.