Migrating Oracle 11g from 32b to 64b

Question

I figured I could use rman to do a full backup, including the archive files, control file, and SPFILE, and datafiles of the 32 bit version, and restore to a 64 bit OS.
But will that work? Are there docs on how to restore 32b backups to a 64b environment?

Answer 1

Hi
This procedure is for single instance or RAC:
In the 32 bit source server :
Make a full backup of database including all archivelogs
RMAN> run
allocate channel c1 type disk;
allocate channel c2 type disk;
backup database plus archivelog;
backup current controlfile;
} To do on the target 64 bit server:
1) Copy backup files from source server
2) Create the pfile or copy the pfile fromsourceserver
3) Startup nomount the new instance.
4) Connect to rman and set the dbid:
$ rman target / nocatalog
RMAN> set dbid=<dbid from 32 server>; 5) Restore the controlfile:
RMAN> restore controlfile from '/disk1/backup_32/backup_piece_name';
RMAN> alter database mount;
RMAN> restore database; 6) Identify the archivelog till you want to do the recovery and check if you have all the backups you need to do it, and run:
RMAN> run
set until sequence xxxx;
recover database;
RMAN> exit 7) Now Migrating to 64 bit:
SQL> recover database until cancel using backup controlfile;
cancel
SQL> alter database open resetlogs migrate;
SQL> @$ORACLE_HOME/rdbms/admin/utlirp.sql
SQL> @$ORACLE_HOME/rdbms/admin/utlrp.sql
SQL> shutdown immediate;
SQL> startup Also please take a look in other methods in the following Metalink Note:
- Migration of Oracle Instances Across OS Platforms - Doc ID: Note:733205.1
Cheers,
Francisco Munoz Alvarez
http://www.oraclenz.com
Edited by: F. Munoz Alvarez on Sep 24, 2008 12:18 PM