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Re: Oracle RAC vs VM WARE

From: <hasta_l3_at_hotmail.com>
Date: 13 May 2007 23:46:17 -0700
Message-ID: <1179125177.649726.68370@k79g2000hse.googlegroups.com>


On 13 mai, 23:14, Valentin Minzatu <valentinminz..._at_yahoo.com> wrote:
> On May 11, 11:11 pm, EscVector <J..._at_webthere.com> wrote:
> > I have no problems running multiple instances or vm on the same
> > machines. In fact, some vm images run faster than native. It all
> > depends on how you set it up.
>
> > If you have to ask, then stay away from RAC
>
> EscVector, I am arguing on the fact that VMs can be tuned to run
> faster than the native O/S although I would have to see it (not
> intention to flame anybody here).
>
> I doubt though that 3 VMs, each with an Oracle instance running
> inside, will perform better than single Oracle instance on the same
> hardware.
>

We have so far three customer running Oracle in a W2003 vm under WMWare ESQ on Sun/SAN...

We observed that the VM is twice slower than the physical machine (despite CPU guarantee)

I realize that this is anecdotical data. However, the undisputable fact is that so far the customers using Oracle under VMWare on production systems call us a lot for performance problems :-)

Received on Mon May 14 2007 - 01:46:17 CDT

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