I've implemented a backup (and recovery) plan for an Oracle 11gR2 database as follows:

  1. Installed the same version of 11gR2 on production and disaster recovery (DR) servers
  2. Created identical Oracle instances (filesystem structures, SID, etc.) on both servers
  3. Every 6 hours I'm performing a hot backup on the production system and copying the files to the DR system:

alter database begin backup;
<copy all data files to DR server>
alter database end backup;
alter system archive log current;
alter database backup controlfile to 'c:\temp\control01.ctl';
alter database backup controlfile to trace as 'c:\temp\create_control.sql';
<copy both control files to DR server>
<copy all archived logs to DR server>

  1. When I want to recover on the DR system I can simply make sure all the files are in the correct places, "startup mount", "recover automatic database until cancel using backup controlfile;", and "alter database open resetlogs". At this point I only need to change a few dba passwords and the database is usable.

My question/concern is that I need to support multiple instances on the DR server, all of which will be recovering from the production site (they are basically additional test instances). Rather than expdp/impdp I'd like to use my above process as it is much faster than an import.

Can I do it? Only 1 instance on the DR server can have the same SID as the production server. Also, the file system paths are different for all but 1 of the instances on the DR server.


Yes that is possible - see http://www.shutdownabort.com/quickguides/clone_rman.php
this might have some useful info too http://download.oracle.com/docs/cd/B12037_01/server.101/b10734/rcmrecov.htm#1009919

EDIT without RMAN:
see http://www.dba-oracle.com/oracle_tips_db_copy.htm

EDIT 2 without RMAN:

  • Interesting, but can I do it without RMAN? – tmcallaghan Jul 26 '11 at 12:19
  • yes you can, you "just" need to change some more - esp. pfile/spfile need some changes to make sure that the "clone" is a different instance... we did it this way sometime in the "far" past... not sure if I remember all the steps correctly...found it - see my edit – Yahia Jul 26 '11 at 12:23
  • found another way - so 1 with RMAN and 2 ways without RMAN and last but not least the option with export/import... – Yahia Jul 26 '11 at 13:29

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