Re: Does Sybase have something like Oracle's RAC for hot failover?
- From: "Rob Verschoor" <rob@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 29 Aug 2005 12:33:40 +0200
"DA Morgan" <damorgan@xxxxxxxxx> wrote in message
news:1125189604.369503@xxxxxxxxx
> Rob Verschoor wrote:
> > Sybase currently has active-active failover with its HA solution for
ASE,
> > which does pretty much what you describe/
> > ASE's 'Shared disk clusters' version is one (big) step further and
that's in
> > the works -- expected next year.
> >
> > HTH,
> >
> > Rob
> > -------------------------------------------------------------
> > Rob Verschoor
>
> RAC is not a Sybase like HA failover and there is no relationship
> between the Sybase capability and that of Oracle's RAC. Sybase HA
> failover is more equivalent to Oracle's DataGuard failover.
>
> With the Sybase solution you do not have shared-everything. With
> Sybase you do not have load balancing. With Sybase there is a
> primary node and the balance are secondary. With Oracle that concept
> does not exist. All nodes stand on a equal footing.
>
> With Sybase, after failover, all existing client connections are lost.
> With Oracle all existing client connections are maintained. The end-user
> experience is seemless with a DML statement restarted on another live
> node.
>
> HTH
> --
> Daniel A. Morgan
> http://www.psoug.org
> damorgan@xxxxxxxxxxxxxxxx
> (replace x with u to respond)
As I said, ASE's 'Shared disk clusters' are in the works. This is a 'shared
everything' architecture, much like Oracle's RAC.
Rob V.
.
- References:
- Does Sybase have something like Oracle's RAC for hot failover?
- From: Joe Weinstein
- Re: Does Sybase have something like Oracle's RAC for hot failover?
- From: Rob Verschoor
- Re: Does Sybase have something like Oracle's RAC for hot failover?
- From: DA Morgan
- Does Sybase have something like Oracle's RAC for hot failover?
- Prev by Date: where and how to get : sybase 12.5.0.3 AIX version
- Next by Date: Re: What's the JDBC URL for the type 2 driver?
- Previous by thread: Re: Does Sybase have something like Oracle's RAC for hot failover?
- Next by thread: Re: Does Sybase have something like Oracle's RAC for hot failover?
- Index(es):
Relevant Pages
|
|
