we had it with FirstWatch from Veritas on top -- sometimes disks didn't
get dismounted from the first server, or remounted on the second one..
then we had database failures
- "Baker, Barbara" <bbaker_at_denvernewspaperagency.com> wrote:
>
> Jim:
> Sorry, you're not gonna like this answer. HA is a Sun product, not
> an
> Oracle product. Under Sun's High Availability, you can configure
> several
> modules like Sybase and Oracle. (The Oracle product is Sun Cluster
> HA-DBMS
> for Oracle.) It does require what I believe Sun calls a cluster but
> (IMHO)
> is a bastardization of the term. It truly is failover, not cluster.
>
> We've had lots of problems with it. It's caused us lots of grief,
> and only
> in a few instances gained us anything. It is NOT OPS, as the
> database does
> not run in parallel, but only on 1 box at a time. (Everything is
> double
> cabled, and so the drives are re-mounted on the 2nd box if a failover
> occurs.) Your users still get disconnected. You'd probably lose
> less data
> than with a standby (since you pick up with the same drives mounted
> on the
> other box), but it depends on how you have the standby implemented.
>
> There's no additional cost from Oracle to run this crap, but you'll
> be
> paying Sun great sums of money. The Sun web site has more info on
> HA.
>
>
> Let me know if you need more info.
> Good luck!
>
> Barb
>
>
> > ----------
> > From: James McCann[SMTP:james_at_openet-telecom.com]
> > Reply To: ORACLE-L_at_fatcity.com
> > Sent: Thursday, January 17, 2002 5:40 AM
> > To: Multiple recipients of list ORACLE-L
> > Subject: Standby Instance questions and HA
> >
> > Hi,
> > I was reading in the book "Oracle 24/7 Tips and Techniques" about
> > Standby
> > Instances.
> >
> > Note, this is not a standby database.
> >
> > From the book it seams to work in the following way...
> >
> > There is only one database.
> > The database files exist on a shared disk pack. One machine is the
> primary
> > instance, and if this instance dies, a new instance is started on
> the
> > second
> > machine using the datafiles on the shared disk.
> >
> > The problem is that I can't find anything in the Oracle docs about
> this,
> > or
> > on Meta Link.
> >
> > I also want to know if this method of HA requires a clustered
> environment
> > (I
> > think it does, but just want to be sure)?
> >
> > Also, does it come with an Enterprise Edition license?
> > Or is it something which each hardware vendor implements in their
> own way,
> > at extra cost?
> >
> > We have a requirement for a fail over method on Sun Solaris.
> > We do not want to loose any committed data (i.e. a standby database
> could
> > loose some), and want the fail over to be as automatic as possible.
> >
> > We don't want the expense of Parallel Server (Anyone know how
> expensive it
> > is these days?).
> >
> > The disk pack is RAID, and we may also have a standby database off
> site.
> >
> > Has anyone any recommendations?
> >
> >
> > Thanks,
> >
> > Jim
> >
> >
> >
> >
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > --
> > Author: James McCann
> > INET: james_at_openet-telecom.com
> >
> > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> > San Diego, California -- Public Internet access / Mailing
> Lists
> >
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Baker, Barbara
> INET: bbaker_at_denvernewspaperagency.com
>
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Received on Thu Jan 17 2002 - 11:07:09 CST
