Re: oracle on VM or non-VM ?!!

From: Andrew Kerber <>
Date: Sun, 26 Nov 2017 13:35:27 -0600
Message-ID: <>

My company, House of Brick technologies specializes in virtualizing oracle. I am not a licensing expert, I specialize in Oracle, and moving from physical to virtual.
I can say that rac works just fine on VMware, but with VMware HA, the need for RAC is much reduced.

Most companies determine that VMware HA is sufficient for their needs, though we have moved several from rac on physical to rac on virtual.

The performance difference between oracle on physical and Oracle on Virtual Machines is basically nonexistent. There is a certain amount of tuning that needs to be done to optimize performance on physical machines, but once tuned the difference in performance is non-existent.

We have been around for about 20 years, so we have a lot of experience in this area.

On Sun, Nov 26, 2017 at 1:32 AM, JP . <> wrote:

> Friends,
> we want to move all our existing prod oracle databases (around 20
> instance, max db size ~500G) from our old h/w (non-VM) to new ones.
> HA,easy manageability, performance,cost being the key factors considered
> for the new machines , would like to know if VM(type-1) would suit our
> needs.
> I was looking for "VM or non-VM" kind of articles (from a license, HA ,
> performance perspective). But could not come to a conclusion. It's a bit
> confusing. Want to clarify with experts here.
> 1) Does Oracle on VM (type 1) have notable perf issues ?
> 2) Does license cost (or TCO) increase with VM/Oracle combination ?
> 3) Is RAC on VM widely used ?
> 4) RAC on non-VM or single instance on VM - which is good from a HA
> perspective ?
> 5) If VM is advisable, VMware or Oracle VM - which works best overall ?
> Your advice and inputs would be very much helpful. Thanks in advance.
> ~ JP ~

Andrew W. Kerber

'If at first you dont succeed, dont take up skydiving.'

Received on Sun Nov 26 2017 - 20:35:27 CET

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