Thanks Frank and Andrew for your feedback
Sanjay
On Thursday, February 18, 2016 4:28 AM, Franck Pachot <franck@xxxxxxxxxx>
wrote:
Hi,No problem for single instance databases. RAC on VMWare works but can be
difficult to manage. At least, don't let the VM move across servers.
Clusterware don't like that.For licencing, I think it makes sense with ULA only
or your will have to licence all your datacenter cores.The nightmare comes with
support. Just forget to open an SR for Grid Infrastructure on
VMWare...Regards,Franck.
Franck Pachot | Senior Consultant & Oracle Technology Leader | Oracle Certified
Master and Oracle ACEPhone +41 21 643 74 76 | Mobile: +41 79 963 27 22 | Fax
+41 32 422 96 15dbi services, Chemin de Maillefer 36, CH-1052 Le
Mont-sur-Lausannefranck.pachot@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Wed, Feb 17, 2016 at 11:26 PM Andrew Kerber <andrew.kerber@xxxxxxxxx> wrote:
The primary advantage is the added resiliency of virtualization. There aren’t
any real disadvantages that we have run into. When properly configured, the IO
is just as good as on a physical server. Troubleshooting is pretty much
identical, though you do have the added instrumentation that is on VMware that
you can look at. We have found that you get a little more CPU advantage from
using hugepages in VMware than you do using hugepages on physical. From:
Sanjay Mishra [mailto:smishra_97@xxxxxxxxx] ;
Sent: Wednesday, February 17, 2016 4:19 PM
To: andrew.kerber@xxxxxxxxx; dmarc-noreply@xxxxxxxxxxxxx; 'Oracle-l Digest
Users'
Subject: Re: Oracle RAC/non-RAC on Vmware vs Physical Server Thanks Andrew Yes
one thing to be kept in mind is Oracle License that has to go against full
Physical Server I am trying to see what are pros and cons of using VM vs
physical server especially for RAC. What kind of issue like IO etc been
experienced and how to troublshoot/experience for very high OLTP applications.
There are around 250 Database on around 80-100 Physical servers. Some are
Aix,Linux,Solaris and now plan is to rearchitect to move them to Linux and
hence plan is going to check RAC or all non-RAC with VMWare to provide any
added resilency. RgdsSanjay On Wednesday, February 17, 2016 4:56 PM, Andrew
Kerber <andrew.kerber@xxxxxxxxx> wrote: I have done this several times. It is
pretty much identical to a physical setup. I have never run into any real
problems. There are quite a few low-level pieces that need to be set up, for
example setting the multi-writer flag on the shared storage, turning on node
affinity, etc. But we have done it quite often and had very good results.
Our performance tests generally show performance to be just as good as a
physical server, but with the added resiliency of VMware. There are a few
gotchas that you need to watch for, eg. One time we had a machine do an
unplanned storage VMotion, and it copied the shared disks. That was a really
freaky thing to look at. You will have to license the entire physical machine
that it runs on, and make sure you use hardware affinity so that the VM does
not run on a physical server you do not plan to license. From:
oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf ;
Of Sanjay Mishra (Redacted sender "smishra_97" for DMARC)
Sent: Wednesday, February 17, 2016 3:37 PM
To: Oracle-l Digest Users
Subject: Oracle RAC/non-RAC on Vmware vs Physical Server Hi Experts Can someone
please share your experience with facts on using Oracle 11g/12c RAC/non-RAC on
Vmware based VM using Linux ? Need to create the doc to show the pros and cons
of the environment for consolidation project. I am sure many have either
created/worked on such project and really appreciate your comments. TIASanjay
