Re: CEO's head in the Cloud
- From: Niall Litchfield <niall.litchfield@xxxxxxxxx>
- To: moabrivers@xxxxxxxxx
- Date: Wed, 2 Jun 2010 22:49:10 +0100
Hi LB
I hate to break it to you but it isn't true that databases hosted on AMIs
are unsupported. http://www.oracle.com/technology/tech/cloud/index.html would
be a good place to start. Jeremiah Wilton wrote a chapter (chapter 2 in
fact) on Oracle in the cloud in the Expert Oracle Practices book and there's
a presentation at http://www.bluegecko.net/download/Cloud.pdf. So cloud
computing isn't a non-starter per se. That doesn't mean it will be a good
fit for you, you for example use RAC for some reason, presumably
scalability; and dataguard for another, presumably HA as well as geographic
redundancy which AWS pretty much eliminates the need for. You need to think
about how you might satisfy those requirements in the cloud, you might well
not satisfy them of course.
I think the answer to the performance question would be to do some end to
end tracing of your app from various geographic regions and see where the
time goes, comms to the web server, web server time, comms to the app
server, app server time, comms to the db server, db time. That'll give a
real clue about end user experience in Iraq vs CA.
Niall
On Wed, Jun 2, 2010 at 10:12 PM, LB <moabrivers@xxxxxxxxx> wrote:
> My CEO just came back from a technology conference where his head became
> filled with lots of ideas including the idea that we should abandon our
> hosted datacenters and push everything into the Cloud, specifically
> Amazon's. A cursory review of the offerings for this show that the
> databases are hosted on Amazon virtual machines that aren't officially
> supported by Oracle and thus require a premium support contract from Amazon.
>
>
> Aside from my personal feelings on the matter (that I'd much rather have a
> tangible set of servers that are under direct control), what are your
> pros/cons for pushing or not Production level OLTP databases into the cloud.
> I notice right now that they currently only offer 11g1 on 64-bit an not 10g
> 64-bit or 11g2 64-bit so it would appear they arent covering all of their
> bases. Presently we're RAC on 10.2.0.4 64 bit and use dataguard to a
> different datacenter for geographic redundancy. I note also that Amazon
> doesnt support RAC instances at present.
>
> His driving push is that somehow Amazon's cloud will mean better
> performance throughout the world as somehow the network throughput will be
> magically enhanced so someone in Iraq will get the same speed hitting the
> application as someone in California. I don't agree with that either but I
> dont have empirical proof. Our databases presently are highly available,
> highly optimized, and highly redundant. But, they aren't buzz word stamped
> "Cloud." Sigh.
>
--
Niall Litchfield
Oracle DBA
http://www.orawin.info
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