RE: MC/Serviceguard vs Sun Clusters

We have had file corruption before but never with Oracle. There is a product we use here that uses a priority database that does not do a two phase commit. When the disks fail over during the middle of a write it causes a huge issues. It took the vendor a week with a lot of our assistance to get one of the fab machines back up again. Very costly. They claim that their product is suitable for ServiceGuard as well. NOTE: they are now switching to Oracle as their database.

Just be real careful what you put under ServiceGuard.

-----Original Message-----
Travis
Sent: Thursday, February 07, 2002 1:07 PM To: Multiple recipients of list ORACLE-L

Could you explain the file corruption in a little more detail? I cannot imagine how failover would cause file corruption, much less how a properly configured running Oracle instance can get 'absolutely destroyed'. Isn't that the purpose of having Oracle over say a nonlogged, singlethreaded, cheapo db engine...?

> -----Original Message-----
> From: dgoulet_at_vicr.com [mailto:dgoulet_at_vicr.com]
> Sent: Thursday, February 07, 2002 9:00 AM
> To: Multiple recipients of list ORACLE-L
> Subject: Re:MC/Serviceguard vs Sun Clusters
>
>
> Rama,
>
> We did the MC/ServiceGuard thing some years ago. Worked
> well, after our SA
> rebuilt the servers from ground 0. Adding it on to an
> existing server is ok,
> but somewhat unstable. One item to be VERY careful of. The
> heartbeat cable, in
> our case a ethernet thin line, needs to be on a dedicated
> link, preferably a
> purchased vs. custom made cable, and protected from
> accidental disconnect. Ours
> got disconnected by a contractor working in the computer room
> because "it was in
> his way". The resulting reboot of the backup server and
> forcible takeover of
> the disk farm absolutely destroyed the database. We had more
> file corruption
> than I ever could have imagined. Consequently we abandoned
> ServiceGuard & are
> going to standby databases instead.
>
> Dick Goulet
>
> ____________________Reply Separator____________________
> Author: "Rama Malladi" <rama_at_toyota.com>
> Date: 2/6/2002 5:23 PM
>
> Hi...
> I am looking for inputs from anybody who has experience in both
> MC/Serviceguard (MC/S) as well as Sun cluster implementation.
> If a DBA/SA
> team has lots of experience in implementing MC/Serviceguard
> clusters on HP
> and trying to move to SunClusters for HA solution ...
>
> a) What are the common things between MC/S and and Sun
> clusters (ex: about 5
> minute fail-over time, fixed IP address, 2 or more nodes in a
> cluster, disk
> sharing etc..)
>
> b) Any differences between these... What are the things to
> watch out for
> (assuming the team already knows in and out of MC/Serviceguard)
>
> Thank you in advance...
> Rama
>
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> Please see the official ORACLE-L FAQ: http://www.orafaq.com
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> Author: Rama Malladi
> INET: rama_at_toyota.com
>
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