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Database cloning using hot backup (if directory structure is different)

Posted by Pavan DBA on March 26, 2010

Below steps helps you in performing database cloning using hot backup
1. directory structure is different in both source and target servers
2. Oracle version :
3. OS version : Linux 5
4. target database name is same as source database name

step 1 :  Take the hot backup of source database
sql> alter database begin backup;
$ copy datafiles to backup location
sql> alter database end backup;

step 2 : Take controlfile trace and pfile or spfile (that was using by the source database)

step 3 : Install Oracle software on another machine (choose “Install only” option in OUI). Don’t create any database

step 4 : Copy all the files (including trace file and pfile or spfile) from source server to target server either using FTP or rcp
Note: Not necessary in copying control files and redologfiles

step 5 : Place pfile or spfile in “dbs” directory on target

step 6 : Copy the remaining files to their respective locations (If any directories are missing, do create them)

step 7 : Connect as sysdba and Startup the database in nomount stage

step 8 : Edit the trace file (that was copied) and generate a create controlfile script from it. Modify the script and specify the new locations of  the files.

step 9 : Execute the controlfile script which will create controlfiles in the location specified in CONTROL_FILES parameter. Once control files are created, database will be forwarded to MOUNT state.
sql> @create_controlfile.sql

step 10 : Finally, Open the database with resetlogs option
sql> alter database open resetlogs;

5 Responses to “Database cloning using hot backup (if directory structure is different)”

  1. Saurabh said

    Hi pavan,

    we need to recover the hot backup.. before open the database using resetlogs.. I think you missed that step.

  2. arya mahapatra said

    please give what are the changes need if i am working in 11gr2 version

  3. […] Database cloning using hot backup (if directory structure is different) […]

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