I would never want to rely on that method. I had run into that several years ago (Y2K), a Unix Admin had backed up a server and restored to a test machine. Oracle wasn't shutdown at the time of the filesystem backup. The problems were numerous because of checkpoint information in the datafiles vs the control files were out of whack. The database was garbage.

You got real lucky to have a database you could even start.

David


From: Ofer Harel <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
Subject: RE: Duplicate online Database
Date: Tue, 04 Mar 2003 04:58:51 -0800

Unfortunately I found one of my database need a recovery back on time
without a legal backup. There where only the disks backup.
So I tried, I had nothing to lose.
And it worked. Not documented, not recommended, but it worked.
Of course, now this database is backup :)

Ofer

-----Original Message-----
Sent: Tuesday, March 04, 2003 2:34 PM
To: Multiple recipients of list ORACLE-L


Ofer,


Are you suggesting that it is OK to copy an open database without
using hot backup mode, as long as there isn't a log switch during
copy?

Do you use this method at your place of employment?

--
Jeremiah Wilton
http://www.speakeasy.net/~jwilton

On Tue, 4 Mar 2003, Ofer Harel wrote:

> if the database is not heavy updateable, i.e., the switching of redo log
is
> rare, and the database is not too large, you can try this scenario:
> 1. copy (operation system) all the datafiles, redo log, etc..
> you need to copied the hall database without a redo log switch in the
> middle.
> 2. Act with those files as its a hot backup
> 3. Recover the database using a 'backup controlfile to trace'
> 4. It work to me
>
> if you need more, email
>
> -----Original Message-----
> I need to duplicate online database Oracle 8.1.7.
> It is not possible to shutdown the primary database.
> Can I do online backup this primary database by RMAN,
> and + using archivelogs create duplicate database?
> Inconsistent backups of RMAN + archivelogs = duplicate database??


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Author: david davis
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