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

It is very common for people to see all that free space and want to fill it.
Avoid the desire, fill it with a blank file.  Disks are cheap and if you
store things on the outer platters performance will suffer. 

Redo logs and other things in oracle waste disk space as drives get bigger,
it is unavoidable.  But using the space for something totally defeats the
purpose of good configurations.

"Do not criticize someone until you walked a mile in their shoes, that way
when you criticize them, you are a mile a way and have their shoes."

Christopher R. Spence 
Oracle DBA
Phone: (978) 322-5744
Fax:    (707) 885-2275

Fuelspot
73 Princeton Street
North, Chelmsford 01863
 


-----Original Message-----
Sent: Friday, September 14, 2001 10:35 AM
To: Multiple recipients of list ORACLE-L

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

Hi

Thanks.  That's a very good point.  I agree that ARCHIVELOG mode will be 
needed.

However, I still have this big disk just for redo logs, so I'm tempted to 
fill it anyway.  This will be a "sort of" supplementary backup in case the 
archive disk (+ database disks) crash before the backup.  Of course it is 
only "sort of" because, as you say, a runaway process will cycle the logs 
if it generates lots of redo.

However, this seems better use of the disk space than just having a few log 
groups and leaving the rest of the array empty and unused.
Unless there are any other implications?

Thanks
- Bill.



>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

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