Backups on raw devices

From: Jenkins, Michael <Michael.Jenkins_at_nextel.com>
Date: Fri, 15 Jun 2001 11:48:37 -0700
Message-ID: <F001.0032BB56.20010615113733@fatcity.com>

We have parallel server running on on a Sun Cluster 2.2 and we are looking for the easiest way to perform hot backups. Now, I know that you have to use the "dd" command and skip the header at the beginning. Everything I read on metalink indicates that you can use basically the same paradigm as a hot backup on cooked file systems. But, the sysadmins here tell me that the raw device can't be backed up if there is any write activity on the data file that is currently being backed up. Now we all know that contrary to popular belief there is write activity on a data file even when the tablespace is in backup mode. Is "rman" or some other block-level backup utility the only way to get a reliable hot backup on raw devices? Does anybody have any experience with hot backups that are made while the database still has active users logged in?

I look forward to everyone's thought on this.

Thanks.

Michael L. Jenkins
Oracle Certified DBA
Nextel Communications
Norcross, GA

--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Jenkins, Michael
  INET: Michael.Jenkins_at_nextel.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 Fri Jun 15 2001 - 13:48:37 CDT