Re: Snapshot DB's in Exadata?
- From: Frits Hoogland <frits.hoogland@xxxxxxxxx>
- To: aachleon@xxxxxxxxx
- Date: Fri, 14 Jan 2011 11:30:59 +0100
as always, it depends on what you exactly need.
as has been said, there is no equivalence of storage snapshots. this means you
simply can't move the databases over to an exadata and follow the exact same
procedure's.
however, there is oracle technology which might give the same resolution in a
different way. If you want to query the database at different points in time,
oracle's flashback technology might be the thing you are looking for.
Frits Hoogland
http://fritshoogland.wordpress.com
mailto: frits.hoogland@xxxxxxxxx
cell: +31-6-53569942
On Jan 13, 2011, at 9:12 PM, Aaron Leonard wrote:
> Good afternoon.
>
> I'm looking for looking for some advice from those familiar with Exadata.
> We're currently evaluating a move to Exadata, but our business processes
> require near-instantaneous snapshot functionality that I don't know if an
> Exadata system can provide.
>
> On various schedules, we take snapshots (EMC storage), mount them r/w to
> different mountpoints and startup Oracle instances on those. The point is to
> have fast, point-in-time views of our data, which can be modified and
> reported on for an extended period of time. At any one time, we have up to
> 20 different snapshot databases running. Some are retained up to 3 months
> before we recreated them from a new snapshot.
>
> My struggle with giving a thumbs up on Exadata is....how do I make this
> happen in Exadata? Changing the existing business processes really isn't an
> option without significant work (possibly years worth) and having to do that
> really takes away Exadata's appeal. Creating true clones would significantly
> slow down our overall batch process workflow and negate the justification
> (which is speeding up that workflow) for moving to Exadata. What are my
> options, if any? I guess my hope is that Exadata has some undocumented
> functionality internal to it that does this... Realistically, it probably
> does not, but since I can't just download one of these and test it out, I
> have to ask. Any thoughts? Some insight would be greatly appreciated.
>
>
> Thanks,
> Aaron
>
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