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RE: Hot Backup Theory Revisited:

From: Mark W. Farnham <mwf_at_rsiz.com>
Date: Mon, 28 Jun 2004 13:36:20 -0400
Message-ID: <KNEIIDHFLNJDHOOCFCDKAEDKEPAA.mwf@rsiz.com>


Slight correction.
 re:
"I have to do it this way as the database name and file structure names change slightly."

It is probably easier for you to do it this way, but you also *could* use datafile renaming. That still works, so if someone finds themselves with only the "binary" controlfile on hand they are still not painted into a corner. It's a little trickier, since you have to have the database at the right point in a warm start and get the syntax right instead of just knowing your favorite text editor. As usual I recommend belts AND suspendors. Backup to trace and backup controlfile, and stash them both on tapesets.

mwf

-----Original Message-----

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Hodgkinson, Stephen Sent: Sunday, June 27, 2004 7:30 PM
To: 'oracle-l_at_freelists.org'
Subject: RE: Hot Backup Theory Revisited:

Thanks everybody,

After I have backed up all the tablespaces I issue an ' alter database backup controlfile to trace'

I then recreate the controlfile using the SQL.

I have to do it this way as the database name and file structure names change slightly.

Mike the idea that it might already be in backup mode could be a good one. We do get alarms if our tablespace our left in Backup mode but this now seems the only logical explanation.

Stephen.

-----Original Message-----

From: Khedr, Waleed [mailto:Waleed.Khedr_at_FMR.COM] Sent: Saturday, 26 June 2004 3:20
To: oracle-l_at_freelists.org
Subject: RE: Hot Backup Theory Revisited:

Updates/Writes to the file during the O/S copy process, possibly, makes = the copied file inconsistent.

Waleed

-----Original Message-----

From: Guang Mei [mailto:gmei_at_incyte.com] Sent: Friday, June 25, 2004 1:03 PM
To: oracle-l_at_freelists.org
Subject: RE: Hot Backup Theory Revisited:

Why OS copy of control file won't work?

Guang

> -----Original Message-----
Guang,
Under normal circumstances yes, but the control file has to be a "alter database backup controlfile . . .", not a OS copy.

Mike

-----Original Message-----

From: Guang Mei [mailto:gmei_at_incyte.com] Sent: Friday, June 25, 2004 11:17 AM
To: oracle-l_at_freelists.org
Subject: RE: Hot Backup Theory Revisited:

I am trying to understand:

Is it true that if the copy of control file (just an OS copy) is done = AFTER issuing

ALTER SYSTEM ARCHIVE LOG CURRENT; then no earlier (than the log switch) archive log is needed? We still = need the archive logs generated during tablespace backup process.

Guang=20



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Received on Mon Jun 28 2004 - 12:39:41 CDT

Original text of this message

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