with RHEL a not free OS
The old Oracle 11g database also a not free database
The 12 g database is the current and 11 or 12 should !
be ran on Oracle's rebuild of RHEL
"oracle 'unbreakable' linux" ( also a not free OS ) . It is designed TO RUN their database very fast and very well
as in it is optimized FOR the 12 g database
and vmware a not free VM
have you contacted all 3 software providers
you do need support contracts from all 3
you need to build "bridges" for the vm's to contact the outside world
these are virtual network cards
I've been investigating the configuration of VMware vSwitch and RHEL virtual network interface and have made progress in my understanding of the failure of the LLT/GAB network to connect the 2 virtual machines. So much for that.
this is a bit beyond my skill level
i only connect single virtual os's to the network.
getting "heartbeat" going on a VM ???? is not something i have done
i would start with VMware
-- RHEL 6
-- oracle 6
and have a look at the vmware knowledge base
you might also want to have a look at symantec's documentation and support