Re: Oracle and High Availability solutions

I'm curious... why use cluster management software without OPS? As I understand it, with a cluster management only solution, you have to failover to another machine by shutting down the first machine, shutting down and remounting the file system on the failover machine, and starting up Oracle on the failover machine in crash recovery mode. With OPS you just keep going without the need for a failover. Why dedicate a second machine for failover when you can just use it in parallel? The reason I ask is because our sysadmin folks are trying to impose Veritas Cluster Manager on DBA team members who are keen on OPS.

Does anyone have any experience with Veritas Cluster Manager or know of anyone who has? Any opinions on Veritas?

TIA!!!
Steve Orr

• Original Message ----- From: <Steve.Parker_at_lis.co.uk> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Sent: Monday, May 08, 2000 3:44 AM Subject: Oracle and High Availability solutions

> Dear All,
>
> Consider High Availability (HA) Oracle systems, i.e UNIX and
> MC/ServiceGuard / TruCluster / HACMP etc
> where the Oracle database and binaries are held on a 'highly resilient'
> shared disk array which can be
> accessed from 2 or more servers.
>
> When either the HA Service providing Oracle is gracefully 'bounced' from
> one
> server to the other, or is restarted on an alternate server due to the
main
> server
> crashing etc, is it true to state that only one server at any one time is
> accessing
> ( or can access ) the Oracle database.
>
> Oracle parallel server is NOT being used !
>
> In all cases, 'simple' scripts are used by the HA Service to stop and
start
> Oracle,
> which normally mimic what an operator would do anyway.
>
> I would have thought that 2 sets of binaries accessing the same database
> would have disatrous consequences.
>
>
> Any thought / experience / comments please .....
>
>
>
> Thanks
>
>
> Steve Parker
> Technical Consultant
> LIS
>
> --
> Author:
> INET: Steve.Parker_at_lis.co.uk
>
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Received on Mon May 08 2000 - 11:28:12 CDT