Re: MULTI SITE REPLICATION QUESTION

From: Lewis C <lewisc_at_excite.com>
Date: Tue, 19 Apr 2005 00:44:25 GMT
Message-ID: <9ok8615d6ff6o5qh2qkdids75obchp1ghu@4ax.com>

On Tue, 19 Apr 2005 00:00:24 GMT, Lewis C <lewisc_at_excite.com> wrote:

>On 17 Apr 2005 14:21:49 -0700, Thomas Kyte <thomas.kyte_at_oracle.com>
>wrote:
>
>>In article <9g5561pbid66dfh2i09qmnusl9gqb2d1h0_at_4ax.com>, Lewis C says...
>>>
>>>On Fri, 15 Apr 2005 18:38:01 -0700, DA Morgan
>>><damorgan_at_x.washington.edu> wrote:
>>>
>>>>Lewis C wrote:
>>>>
>>>>> RAC is not doable across states.
>>>>
>>>>I bleieve the longest distance RAC cluster so far implemented by
>>>>Oracle was 8km. So you might make it from Kansas City Kansas to
>>>>Kansas City Missouri ... but at what cost.
>>>>
>>>>For long distance replication from stand-alone or RAC I would
>>>>recommend DataGuard.
>>>
>>>I hadn't heard of sites that far apart. That's huge. Do you know
>>>what kind of pipe they used?
>>>
>>
>>google:
>>
>>'stretch clusters'
>>
>>
>>in quotes... Actually, if you put it in 4 corners (where the corners of 4
>>states meet), it could work :) You could hit 4 states that way easily....
>>
>>
>
>Sweet! I've never even heard of that. There's just not enough hours
>in a day.
>
>Thanks for the info.
>
>Lewis
>
>

I checked into it a little more. One of the marketing blurbs says across continents
(http://www.oracle.com/technology/oramag/oracle/04-mar/o24briefs.html the part about Users Adopting Stretch CLusters).

But the best I can find otherwise is, like (I think it was) Dan said, 10s of kilometers. That's still pretty impressive. From my very brief research, that doesn't look like RAC. More like a mirroring solution. Still, it's gotta beat replication.

Lewis

Lewis R Cunningham

Author, ItToolBox Blog: An Expert's Guide to Oracle http://blogs.ittoolbox.com/oracle/guide/

Topic Editor, Suite101.com: Oracle Database http://www.suite101.com/welcome.cfm/oracle

Received on Mon Apr 18 2005 - 19:44:25 CDT