Re: Parallel Server & Standby Database

Mario Bucsics <mario.bucsicsNOmaSPAM_at_siemens.at.invalid> wrote:

>Is anybody out there who knows if it´s possible to create a
>Standby Database for an Oracle Parallel Server ? I think that
>this does not work but i´m gratful for any other information.

I fail to undestand why you would want a standby database for OPS. OPS is after all a redundant configuration. If one or two nodes go down in a three node OPS cluster, you still have one node up and running. Short of a catastrophic failure (explosion, fire etc.), it is extremely unlikely that you will loose all your nodes in a cluster at the same time, thus requiring something like a standby database.

If for whatever reason, you feel that the cluster is not redundant or secure enough, rather spend the time and money fixing that, than to invest it in a standby database.

You can even configure a cluster for cell redundancy (where each cell is a physical set of nodes and disks). For example, you can mirror data across cells to ensure that a complete set of database disks are up and running, even if a whole cell in the cluster goes belly up.

Mario, I see that you have Siemens in your e-mail address. The cluster with cell redudancy I am refering to was in fact a Siemens Nixdorf Reliant RM1000 (Pyramid Nile) system. Amazing technology at the time.

A standby databse defeats IMO the whole concept of using massive parallel processing/clustering acrhitecure and Oracle Parallel Server.

regards,
Billy Received on Wed Apr 26 2000 - 00:00:00 CDT