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Re: Backups

From: Ruth Gramolini <rgramolini_at_tax.state.vt.us>
Date: Fri, 04 Oct 2002 08:43:36 -0800
Message-ID: <F001.004E0EBD.20021004084336@fatcity.com>


I would do a cold backup of the Oracle executables and application stuff but I would do an rman level 0 for the database(s).

Ruth
----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Friday, October 04, 2002 12:18 PM

Not mentioning that there is usually hot in Florida, so cold is good.

Saying that, I wonder how many people would go into software upgrade or a major change without a full cold backup.

-----Original Message-----
Sent: Friday, October 04, 2002 10:28 AM
To: Multiple recipients of list ORACLE-L

lol, OK my reasons for occasional cold backups. As a prior sysadmin, I prefer single user mode full filesystem backups (i.e. databases shut down) prior to any upgrade whether its an application, database, or operating system. There are benefits of cold over hot backups (of course this assumes you have the luxury to take a database offline):

  1. Archive logs not needed.
  2. No need to be concerned which databases are in archivelog mode.
  3. Easier to backup and restore, even the sysadmin can do it :), i.e. no DBA required, no database recovery. OS utilities can be used for backup/restore.
  4. Old habits are hard to break :).

Gene

>>> jkstill_at_cybcon.com 10/04/02 01:38AM >>>

OK, Gene, you asked for it. :)

The context of your message suggests that a hot backup is somehow more likely to be corrupted than a cold one.

I hate to resurrect an old flame war, but...

No, I take it back. I don't hate it a bit. ;)

There aren't many occasions that call for a cold backup.

I'm just curious what you believe a cold backup is buying you that a hot backup won't deliver.

Jared

On Thursday 03 October 2002 14:54, Gene Sais wrote:
> wow, never a cold backup for any os,oracle, application upgrades? i
prefer
> to shutdown everything, backup the filesystems, let the vendor have his
> way. if he screws up, its much easier to restore a complete filesystem
> than a corrupted database. cold backups are a good thing. i sleep good
at
> nite :) soon, rman will be another backup method in my toolbox. but when
> that happens, i can see hot backups going away but cold backups will still
> be needed on occassion.
>
> >>> rgramolini_at_tax.state.vt.us 10/03/02 04:33PM >>>
>
> I don't do them either, 4.5 years here. Ruth
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> Sent: Thursday, October 03, 2002 4:17 PM
>
>
> I haven't done nor recommended a cold backup in 3 years since I've been
> using Rman. Just not needed anymore.
>
> Tom Mercadante
> Oracle Certified Professional
>
>
> -----Original Message-----
> Sent: Thursday, October 03, 2002 3:14 PM
> To: Multiple recipients of list ORACLE-L
>
>
> I still prefer cold backups when performing full OS backups.
>
> >>> RROGERS_at_galottery.org 10/03/02 02:28PM >>>
>
> Lest we not forget the archivelogs also during this backup procedure.
> Ron
>
> >>> rgramolini_at_tax.state.vt.us 10/03/02 01:53PM >>>
>
> I forgot about alter tablespace begin backup; etc. I am spoiled, I use
> rman
> to do online backups. No problem with recovery!
> Ruth
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> Sent: Thursday, October 03, 2002 12:18 PM
>
>
> This doesn't sound right. Put the database in hot backup mode,
> backup (whether using cp to a staging point like the poster here
> is doing or straight to tape using dd or dump or some other utility),
> come out of hot backup mode. Why wouldn't you be able to recover?
>
> John P Weatherman
> Database Administrator
> Replacements Ltd.
>
>
>
> -----Original Message-----
> Sent: Thursday, October 03, 2002 10:18 AM
> To: Multiple recipients of list ORACLE-L
>
>
> If you want to be able to use any OS backup for restore/recovery that
> database must be closed when you do the backup. If it is not, you
> won't be
> able to recover.
>
> Just a thot,
> Ruth
>
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> Sent: Thursday, October 03, 2002 9:08 AM
>
>
> Robyn,
> We used the DD method on pre 7.1 oracle with RAW devices. It worked
> fine except that it used a lot of tape dumping a raw device when only
> a
> small portion was used. Using a dd command to place a copy of the data
> on tape should not be a problem if a restoral is needed. The dd
> function
> is just another OS method of copying data to a tape. I don't know for
> sure but I think there might be some issues about transportability of
> the dd tape.
> Other users will know about the transportability issues.
> Ron
> ROR mm
>
> >>> Robyn_at_iTeamTech.com 10/02/02 08:08PM >>>
>
> Hello,
>
> I need some info about backups. I am working on a customer site, and
> have implemented both exports and hot backups. Both jobs copy to a
> separate mount point, and a job scripted by another individual then
> moves the files to tape.
>
> Here's the problem - he's using a dd command, primarily because it
> provides a succinct output he can email to non-technicals. The file
> system is built on a 12 disk A1000 array. We've provided him with a
> ufsdump script, but he's doesn't want to use it. Can the system be
> recovered from this tape? Has anyone ever relied on a dd for a daily
> backup method? The system is Oracle 9i on Solaris 8.
>
> Robyn
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Robyn Anderson Sands
> INET: Robyn_at_iTeamTech.com
>
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> Author: Ruth Gramolini
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> Author: Ruth Gramolini
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> Author: Gene Sais
> INET: Gsais_at_co.palm-beach.fl.us
>
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> Author: Mercadante, Thomas F
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--
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--
Author: Jared Still
  INET: jkstill_at_cybcon.com

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Author: Gene Sais
  INET: Gsais_at_co.palm-beach.fl.us

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Author: Inka Bezdziecka
  INET: IBezdziecka_at_cupe.ca

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-- 
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-- 
Author: Ruth Gramolini
  INET: rgramolini_at_tax.state.vt.us

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Received on Fri Oct 04 2002 - 11:43:36 CDT

Original text of this message

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