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Hi


Yes you can untill the day that you have this runaway process that creates
20Gb of redo and than crashes your database 5 minutes before the daily
offline backup should kick in.

But you are only mirroring, why not put your database in archivelogmode.
You do not have so much redo per day that your disks/archiver can't handle
it. Now if your archive directory is full oracle won't crash, but just stop
untill you free up some space (I believe this is the behaviour anyway).



Jack




Bill Buchan <[EMAIL PROTECTED]>@fatcity.com on 14-09-2001 15:20:18

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!! Please do not post Off Topic to this List !!



I am planning setting up a new database with the redo logs on RAID 1 array
(mirror).
The amount of space available on the array is 16Gb and only the redo logs
will be on there.
The application will generate << 2Gb of redo per day and will be backed up
(cold) each night to tape.

If I set up enough groups (MAXLOGFILES) such that the whole array is full
of logs (each probably 50Mb in size) can I safely run this in NOARCHIVELOG
mode and still expect ARCHIVELOG mode type complete recovery?

The application will not overwrite a log till several days (and several
backups) after it was last used, and the logs are protected by
RAID.  Recovery requirement is only to be able to get back to the "current
state" (say that last 24 hours max.) before failure, not recover way back
in time.

Are there any other issues (eg. performance) that I should consider?

Any comments much appreciated.

Thanks
- Bill.


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