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database clustering as oracle

4 posts in Product Futures Discussion Last posting was on 2004-08-23 13:09:50.0Z
Hui Stephen Posted on 2004-04-21 14:25:56.0Z
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Will Sybase 15.0 has feature like Oracle load-sharing among different
nodes ( Real Application Cluster )??


Jason L. Froebe [TeamSybase] Posted on 2004-05-09 22:05:31.0Z
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On 21 Apr 2004 07:25:56 -0700,
in sybase.public.ase.product_futures_discussion

Hui Stephen <shuihk@netvigator.com> wrote:
>Will Sybase 15.0 has feature like Oracle load-sharing among different
>nodes ( Real Application Cluster )??
>

Hi Hui,

The clustering for ASE 15 will be different than Oracle's RAC. You may want to
contact your Sybase representative for any public information on it.
Jason L. Froebe

Weblog http://www.livejournal.com/users/jfroebe

TeamSybase (http://www.teamsybase.com)
ISUG member (http://www.isug.com)
Chicago Sybase Tools User Group (http://www.cpbug.com)


Leigh Kennedy Posted on 2004-08-19 00:44:50.0Z
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> Will Sybase 15.0 has feature like Oracle load-sharing
> among different nodes ( Real Application Cluster )??

Sybase's clustering will be fundamentally different from
oracle's - it will work with more than 2 nodes !

Ask Oracle for Reference sites with 5 or more node RAC
implementations. You are unlikely to get any.

Leigh.


Jeff Tallman Posted on 2004-08-23 13:09:50.0Z
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Article PK: 96591

One thing I have learned in the years of working for Sybase -
references, or rather the lack of them - are often misconstrued. Many
customers won't reference out of policy (i.e. Gov't, and many financial
firms) or whenever an implementation is seen as providing a competitive
advantage.

Oracle will also point to the SAP benchmark which used 4 nodes as well
as a couple of GRID success stories that would suggest that >2 nodes are
possible - not to mention several TPC-C benchmarks.

One reason for the lack of sites with 5+ node RAC implementations is
that the reality probably is that customers were really after HA
clustering but wanting to use the second node for processing vs. just a
sunk cost. Consequently, they didn't want more than 2-4 nodes as it
really complicates application development life via requiring
transaction routers/application partitioning.

Having said that, the real push for RAC as well as Sybase clustering is
being driven by the huge disparity in cheap commodity Intel boxes vs.
the (unexplicably) still high priced high-end SMP machines. For $100K,
I can get 20 cpu's in 5 4-way XEON based systems....from IBM, Sun, and
HP, a 20-way SMP box would cost $1M. Now then, what I have not ever
seen is a comparison if the extra development time and DBA time
administering the cluster beast totals $900K to eat up the difference.
My suspicion is that if IBM, HP & Sun came up with a cheaper SMP box,
they could re-change the equation back in their favor

Leigh Kennedy wrote:

>>Will Sybase 15.0 has feature like Oracle load-sharing
>>among different nodes ( Real Application Cluster )??
>
>
> Sybase's clustering will be fundamentally different from
> oracle's - it will work with more than 2 nodes !
>
> Ask Oracle for Reference sites with 5 or more node RAC
> implementations. You are unlikely to get any.
>
> Leigh.