Here is en exception: I happen to administer a couple of data mart databases, that are loaded once or twice a month. Both run in noarchive log mode. This is how these have been set up when we started back in 1998. We take cold backups after the data load, table/partition analyze. It takes 5 hours max on a Sunday. No other changes are made to any of the data till the next data load. We have yet to see a reason for these databases to be running in archivelog mode. In the worst case, the recovery of the largest db (80GB) is about 8 hours from backups (Yes, we do DRP drills). And that type of downtime is perfectly alright with the business and end users.
- Kirti -----Original Message----- Sent: Monday, March 18, 2002 4:59 PM To: Multiple recipients of list ORACLE-L NOARCHIVELO Connor - Good points, but obviously there are exceptions. We have a data warehouse that we keep in NOARCHIVELOG mode. After the weekly load we do a cold backup. However, lately there has been talk of some updates during the week, so that may have to change. Dennis Williams DBA Lifetouch, Inc. [EMAIL PROTECTED] -----Original Message----- Sent: Monday, March 18, 2002 3:28 PM To: Multiple recipients of list ORACLE-L NOARCHIVELO Just to add to the controversy, I often make the argument to developers/users/managers/etc that noarchivelog does not exist. In my opinion, 'noarchivelog' is like waving a flag saying "I stand an excellent chance of losing a whole lot of data one day". Some years ago at a place I worked, some idiot came up with some piece of nonsense along the lines of "We don't make any changes, we do a cold backup each night, and we can easily reapply the flat files that are sqlldr'd into the db each morning"... and thus went for a noarchivelog strategy. When it did go belly up, this "simple" option turned into a nightmarish exercise... Even worse, the idiot happened to be me at the time :-) --- "Freeman, Robert " <[EMAIL PROTECTED]> wrote: > I can read your question 2 ways, so let me answer it > both ways... > > If you are asking if you can only do a cold backup > when in noarchivelog > mode, you are correct. > > However, in archivelog mode you can do cold or hot > backup. The procedure is > a bit different in archivelog mode, because of the > recovery implications of > being in archivelog mode. > > RF > > Robert G. Freeman - Oracle8i OCP > Oracle DBA Technical Lead > CSX Midtier Database Administration > > The Cigarette Smoking Man: Anyone who can appease a > man's conscience can > take his freedom away from him. > > > > -----Original Message----- > Sent: Monday, March 18, 2002 1:28 PM > To: Multiple recipients of list ORACLE-L > NOARCHIVELOG mo > > > but isn't cold backup is possible only if ur running > in noarchieve mode else > you have to go for hot backup. > BigP > > ----- Original Message ----- > To: "Multiple recipients of list ORACLE-L" > <[EMAIL PROTECTED]> > Sent: Monday, March 18, 2002 7:41 AM > > > > Ok.... maybe you will think this is a silly > thread, but I've wondered > > about this before... > > > > We (DBA's) use the terms hot and cold backups all > the time. I wonder > though, > > when we talk about cold backups if the terminology > should not include the > > mode of the backup: > > > > cold archivelog mode backup > > cold noarchivelog mode backup > > > > When we say "cold" backup, do we just assume it's > NOARCHIVELOG mode...and > > enjoy the fact that we don't have to type or say > as much...or should we be > > more specific to help the junior DBA's (or perhaps > even those out there > who > > have never really considered that there is a > distinction between the two) > > out there? When books are written, I notice that > they mostly just talk > about > > hot and cold backups, assuming that the cold > backup is in NOARCHIVELOG > > mode... > > > > what about the junior DBA who does a cold backup > in ARCHIVELOG mode and > > follows the standard cold backup procedure > (backing up control files and > > redo logs) assuming that he can just recover > them....(granted, anyone > should > > test > > their backup and recovery strategy, but this is a > Jr. DBA!) > > > > Just thinking aloud... is it a silly question? > > > > Robert G. Freeman - Oracle8i OCP > > Oracle DBA Technical Lead > > CSX Midtier Database Administration > > > > The Cigarette Smoking Man: Anyone who can appease > a man's conscience can > > take his freedom away from him. > > > > > > -- > > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > > -- > > Author: Freeman, Robert > > INET: [EMAIL PROTECTED] > > > > Fat City Network Services -- (858) 538-5051 > FAX: (858) 538-5051 > > San Diego, California -- Public Internet > access / Mailing Lists > > > -------------------------------------------------------------------- > > To REMOVE yourself from this mailing list, send an > E-Mail message > > to: [EMAIL PROTECTED] (note EXACT spelling of > 'ListGuru') and in > > the message BODY, include a line containing: UNSUB > ORACLE-L > > (or the name of mailing list you want to be > removed from). You may > > also send the HELP command for other information > (like subscribing). > > > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > -- > Author: Big Planet > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: > (858) 538-5051 > San Diego, California -- Public Internet > access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an > E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of > 'ListGuru') and in > the message BODY, include a line containing: UNSUB > ORACLE-L > (or the name of mailing list you want to be removed > from). You may > also send the HELP command for other information > (like subscribing). > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > -- > Author: Freeman, Robert > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: > (858) 538-5051 > San Diego, California -- Public Internet > access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an > E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of > 'ListGuru') and in > the message BODY, include a line containing: UNSUB > ORACLE-L > (or the name of mailing list you want to be removed > from). You may > also send the HELP command for other information > (like subscribing). ===== Connor McDonald http://www.oracledba.co.uk (mirrored at http://www.oradba.freeserve.co.uk) "Some days you're the pigeon, some days you're the statue" __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-1?q?Connor=20McDonald?= INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: DENNIS WILLIAMS INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Deshpande, Kirti INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
