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Home -> Community -> Mailing Lists -> Oracle-L -> Re: What to Choose ?
One of Kevin's best traits is common sense. :)
Oh yeah, he'll be at openworld too
>From: "Tom Pall" <tom_at_cdproc.com>
>Reply-To: ORACLE-L_at_fatcity.com
>To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
>Subject: Re: What to Choose ?
>Date: Thu, 31 Aug 2000 14:18:27 -0800
>
>Kevin Loney came to visit for a few days last year and I spoke about HA
>with him.
>We're running on Sun/Sparc, fairly new hardware (and Sun disks [grrrrrrr]).
>Kevin asked me to list each failure. They clustered around the disks:
>losing a cable,
>controller problem.
>
>"Why, then" he asked, "would you go OPS for HA?"
>
>We are very happy with the HA path we chose: Fiber Channel, filesystem
>mirroring.
>When node A has a problem, we export the filesystems from node A, import
>them into node B,
>start Oracle on node B. Oracle looks around, sees a crashed database,
>performs instance recovery.
>We don't have autofailover of sessions, don't need it.
>
>The Fiber Channel, filesystem mirroring also allows me to have a reporting
>database every day:
>form a mirror, break the mirror, scp a copy of the control file and
>archived redo logs (after a bunch of
>log switches on production). We start up the reporting database, recover
>it, open for business.
>----- Original Message -----
>To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
>Sent: Wednesday, August 30, 2000 3:27 PM
>
>
> > I thought that Oracle parallel server meant multiple processing
> > nodes mounted onto the same disk farm. Thus disk failures would show
> > up in all instances. Also, if different instances are accessing
> > the same data block, one has to wait for the other to finish with it,
> > making OPS not a proven technology for OLTP (??).
> >
> > A backup from the hardware end sounds more purposeful towards high
> > availability.
> >
> > P.S. Someone said IBM's HACMP config isn't reliable in having the
> > second node mount disks when one node goes down, leaving no access
> > to data at all.
> >
> > Akshay Jain
> > _______________________
> > Newcourt-CIT
> > Tel. (416) 507-5385
> > mailto:Akshay.Jain_at_cit.com
> > _______________________
> >
> >
> > -----Original Message-----
> > Sent: Friday, August 25, 2000 6:02 AM
> > To: Multiple recipients of list ORACLE-L
> >
> >
> >
> > WE are looking at "high availability".I need some help to decide
> > whether to go for
> > a High Availability Sun cluster with backup server or for Oracle
>parallel
> > server.
> > Keeping the key word in mind what would u people advice ?
> > I would be happy if you can provide any links to the mentioned Subject.
> > Thanks,
> > Kamal
> > --
> > Author: Kamalakannan, D (CAP, GCF)
> > INET: D.Kamalakannan_at_gecapital.com
> >
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> > --
> > Author: Jain, Akshay
> > INET: Akshay.Jain_at_cit.com
> >
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>--
>Author: Tom Pall
> INET: tom_at_cdproc.com
>
>Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
>San Diego, California -- Public Internet access / Mailing Lists
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