Re: Raid and Mirroring Redo logs-Newbie

I'm not sure about the second question, but a definate yes on the first. As with you, I wondered it this was necessary. I did not have mirrored redo logs and one of the redo logs got corrupted. Because there was no mirror, the db crashed. I created a mirror for each group. Again, the same redo file got corrupted but this time the db did not crash because it could still write to the mirror. I dropped the corrupt member and recreated it with no problems.

DKite wrote:

> I am relatively at Oracle. I have 2 questions.
>
> 1. We have an HP with raid 5. My Oracle instructor suggested that redo
> logs should be mirrored within Oracle. Is this really needed with raid?
>
> 2. The system will eventually have 2000 users. Most of which will have a
> login, but may not being actively working at the one time. Are there any
> rules to determine whether to run a multithreaded or 'normal' Oracle
> instance?
>
> Thanks in advance
>
> --
Received on Mon Feb 02 1998 - 00:00:00 CST