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Home -> Community -> Mailing Lists -> Oracle-L -> RE: RE: Online vs offline backups
-----Original Message-----
Sent: Wednesday, 19 June 2002 5:38 AM
To: Multiple recipients of list ORACLE-L
Ferenc Mantfeld£¬
>The same person that advocated a cold backup
>did not back up the online redo logs, so what use was it anyway, since the
>only way they would force open their DB is with a resetlogs option anyway.
For cold backup, oracle does not recommend backup the online redo log. And if you restore the whole cold backup, why need the online redo log? I am sure people doing cold backup will do shutdown normal/immediate, not shutdown abort.So there is no need to backup the online redo log at all! Backup the online redo log also take the risk of damage the current online redo log when you want to do full recovery.
So, never backup the online redo log when doing cold backup.
FM : and hopefully in time you will come to the realization that not all that Oracle recommends is good, or has passed a decent degree of sanity checking. But I can see that the PR and hype machine still works well.
Apologies for starting this pissing contest, I have my convictions based on true life experiences, rather than from attending a course. I suggest reading Rama Velpuri's book on backup and recovery first. Then if you want to simply open the database as it was at the time of cold backup, if your online redo logs have not been restored, you will need to perform recovery. An you cannot restore what has not been backed up. Amen ! Chapter closed !
redo log corruptions are another deal altogether.
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chal_ping
chaospku_at_163.net
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: chal_ping INET: chaospku_at_163.net 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: ListGuru_at_fatcity.com (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: Ferenc Mantfeld INET: fmantfeld_at_siebel.com 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: ListGuru_at_fatcity.com (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).Received on Thu Jun 20 2002 - 19:24:26 CDT
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