Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Mailing Lists -> Oracle-L -> RE: EMC BCV Splits and Hot Backup mode.

RE: EMC BCV Splits and Hot Backup mode.

From: Mercadante, Thomas F <NDATFM_at_labor.state.ny.us>
Date: Mon, 24 Sep 2001 10:01:53 -0700
Message-ID: <F001.003967EE.20010924101650@fatcity.com>

Glenn,

My understanding is that you need to "account for" the time it takes to start and complete the BCV split. The only way to do this is to put the tablespace in hot backup mode so that you can "recover" the tablespace when you bring the database up on the copied system.

If you do not do this, then the tablespaces are all out of sync with the control file, and you have no way of recovering them.

This is different from losing a mirror disk. In this case, the raid hardware is simply going to recover a complete volume for you.

What we want to do here is to recover *individual files* using the Oracle software.

hope this helps

Tom Mercadante
Oracle Certified Professional

-----Original Message-----
Sent: Monday, September 24, 2001 1:40 PM To: Multiple recipients of list ORACLE-L

It is my understanding that the common implementation of copying an Oracle database on an EMC using BCVs is this;

  1. put the source database in BEGIN BACKUP mode for all the tablespaces,
  2. break the mirror,
  3. put tablespaces in END BACKUP mode
  4. recover on target, or backup the files.

Question:
Why is it necessary to put the database in 'hot backup' mode when splitting a BCV? If it is just like splitting a mirror, why do you need the database in hot backup mode at all? Wouldn't it be the same as losing one side of a mirrored pair? When that happens, no extra processing is needed.

--

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

Author: Glenn Travis
  INET: Glenn.Travis_at_sas.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).
--

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

Author: Mercadante, Thomas F
  INET: NDATFM_at_labor.state.ny.us
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 Mon Sep 24 2001 - 12:01:53 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US