Re: Disk mirroring of an Oracle database

Hi
It's possible that power fail or even the motherboard logic crashes your disk. When a motherboard or a controller hangs up, or even writes something stupid om your disk, mirroring doesn't work. (you can try archive log mode).
When a disk-head crases your database doesn't even go down when you're mirroring.
The question is: How much money will you spend to buy more hardware or how urgent is your problem when database crashes. Greetings Cor  

In article <3212190B.444B_at_cngp.cng.com>, "Ian G. Crozier" <ian_g_crozier_at_cngp.cng.com> says:
>
>Hi everybody,
> when I came into work this Monday morning, I was
>welcomed by the fact that our Oracle database was down! After I found
>that it wouldn't even boot up, I swapped the Sparc10 for another
>one we had, which was not being used. The system booted up, but
>one of the 4gb external drives would not come on line.
>Anyway, after spending a day and a half replacing drives and restoring
>full and incremental backups, we got the database back up and running.
>Luckily, we didn't have any major time critical projects to finish
>during this period.
> Anyway, to get to the point of this post, we are now
>considering the implemenation of disk mirroring or even total mirroring
>of the Oracle database. Since, now I can't even boot up the original
>workstation, it says something like "Self Power Test Failed, Replace
>Main Logic board", disk mirroring alone could not have prevented this
>failure. Though, bringing the system back on line would have been a lot
>faster. Could the mother board failure have caused the external disk
>drive to fail, or maybe there was a power surge that zapped them both
>at the same time?
> So, can anyone with experience in this ares recommend
>the best way to go. We presently have about 4gb of data on 8gb of
>disk space and are using a Sparc10 with 128mb of memory.
> All advice will be appreciated.
>
> TIA .... Ian Crozier
  Received on Tue Aug 27 1996 - 00:00:00 CEST