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RE: Database Cloning

From: Ikediugwu, Chinedu SITI-ITPSIE <C.Ikediugwu_at_shell.com>
Date: Wed, 17 Sep 2003 09:49:41 -0800
Message-ID: <F001.005D03CE.20030917094941@fatcity.com>


But you still need to do a cold copy of the database files, right?

-----Original Message-----
Sent: 15 September 2003 22:30
To: Multiple recipients of list ORACLE-L

>Your belief was wrong.

Actually, the belief was correct for some versions of oracle and some platforms. Case in point was Oracle 7 on an HP server. The source must be down in order to bring up the clone and recreate the control file.

Ron Thomas
Hypercom, Inc
rthomas_at_hypercom.com
Each new user of a new system uncovers a new class of bugs. -- Kernighan

                                                                                                                                                 
                      sfaroult_at_oriole.c                                                                                                          
                      om                       To:       ORACLE-L_at_fatcity.com                                                                    
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                      ml-errors_at_fatcity        Subject:  Re: Database Cloning                                                                    
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"Smith, Ron L." wrote:
>
> Whenever we clone a database on the same server we have always had the
> understanding that the original database must be down until the new
> database is renamed by running the control file script.
>
> I am going through the Oracle Recovery 101 book in an effort to
> understand RMAN and one chapters in the book is cloning a database on
> the same server. I just went through the steps to create a clone of a
> hot database. I created the new database on the same server with a new
> name while the original database was up and running. I had no problems.
> Was our belief that the original database had to be down, incorrect, or
> was this just a restriction of older version like 7.3.4?
>
> Thanks!
> Ron Smith

Ron,

   When you clone a database, you start with :

1) changing db_name in the init.ora file and most paths
2) defining a new ORACLE_SID and renaming init.ora accordingly
3) starting the instance without mounting it - your init.ora file is
opened and read.

 Where do you want anything to interact (badly) with an existing database?
You have allocated some shared memory, have started a few processes and read a file. Big deal.

Your belief was wrong.

--
Regards,

Stephane Faroult
Oriole Software
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
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Author: Stephane Faroult
  INET: sfaroult_at_oriole.com

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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
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Author: Ron Thomas
  INET: rthomas_at_hypercom.com

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-- 
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-- 
Author: Ikediugwu, Chinedu SITI-ITPSIE
  INET: C.Ikediugwu_at_shell.com

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Received on Wed Sep 17 2003 - 12:49:41 CDT

Original text of this message

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