Re: Oracle RAC on VM

From: Justin Mungal <justin_at_n0de.ws>
Date: Fri, 22 Aug 2014 04:27:58 -0500
Message-ID: <CAO9=aUxvei=J8X-0LqQ9P_GtaSnYK8xKaF8Bxj1f_zb6-x9Jfw_at_mail.gmail.com>

If you open an SR and Oracle thinks it's the hypervisor, they will tell you to reproduce the issue in a non-virtualized environment in order to continue getting support. This has never happened to me, but we don't have that many virtualized systems running Oracle.

On Thu, Aug 21, 2014 at 5:14 PM, Kevin Lidh <kevin.lidh_at_gmail.com> wrote:

> As a DBA, I never wanted to work on Oracle on VMware but it seems to be
> the trend. Now that I’m a manager, I’m looking to propose moving to RAC
> for HA and also back to physical machines. Since this goes against the
> strategic direction of our organization, I’m sure I’ll be asked why we
> can’t do RAC on VMs. I have my personal opinions about this but I was
> wondering what the broader audience of experts believe.
>
>
>
> Factors I’m considering are:
>
> 1) Servers closer to the storage for performance. In
> virtualization, you have an intermediary processing your requests and
> responses.
>
> 2) Access to all resources licensed. We keep a certain percentage
> of our hosts free to handle the load in case one in the cluster fails.
> With RAC, you have access to all the resources all the time. And since you
> have to pay for it all anyway, I see that as a good thing.
>
> 3) Performance in general. I don’t have any evidence but I can’t
> believe that another layer between my OS calls and the hardware could be as
> fast as not having that layer.
>
>
>
> Thanks in advance,
>
>
>
> Kevin
>

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Received on Fri Aug 22 2014 - 11:27:58 CEST