How To Manually Clone A Database To Another Node

How to Manually Clone a Database to Another Node In this Document Goal Solution

Applies to: Oracle Server - Enterprise Edition - Version: 07.03.04 to 11.1.1 Information in this document applies to any platform.

Goal This note gives a step by step guide about how to manually clone or restore the database to a different host.

Solution 1) Prerequisites ---------------- The copy of the datafiles must be done with the database closed or the database must be in ARCHIVELOG mode, 2) init.ora or spfile and controlfile ---------------------------------------------------- You need to copy the init.ora or spfile file to the target host and locate it in ORACLE_HOME\dbs - Copy the controlfile(s), all the datafiles and all the archivelogs generated, to the target host. If database is open then, you need to put all the tablespaces in backup mode, before starting the copy: ALTER TABLESPACE BEGIN BACKUP; >> copy all the tablespace datafiles ALTER TABLESPACE END BACKUP; ==> Do this for all the tablespces 3) Set the oracle environment ------------------------C:\> set ORACLE_SID=<SID> C:\> sqlplus "sys/manager as sysdba" - Check the init.ora parameters that reference location control_files =

background_dump_dest = core_dump_dest = user_dump_dest = log_archive_dest_1 = 4) Set up a password file for the duplicated database orapwd file=$ORACLE_HOME/dbs/orapw$ORACLE_SID password=<...> 5) If Windows Platform, create a new NT service for the duplicate database using oradim. oradim -new -sid <SID> -intpwd <password> -maxusers 10 -startmode manual -spfile '<spfile>' or oradim -new -sid <SID> -intpwd <password> -maxusers 10 -startmode manual -pfile ''

5) Startup the database in mount status SQL> startup mount SQL> Rename any of the datafiles to the new location, if necessary: ALTER DATABASE RENAME FILE '/FULL_PATH_OF_OLD_LOCATION/AND_DATAFILE_NAME.DBF' TO '/FULL_PATH_OF_NEW_LOCATION/AND_DATAFILE_NAME.DBF'; SQL> Rename the logfiles to the new location if necessart alter database rename file '' to ''; 6) Check that all the datafiles are in the right location: select file#, name from v$datafile; 7) Perform incomplete recovery: SQL> recover database using backup controlfile until cancel; Forward the database applying archived redo log files until you decide to stop recovery by typing cancel at the prompt (assuming that you have required archived redo log files in the log_archive_dest directory) You may archive the source database redo log files and apply them at the target database if required. SQL> alter database open resetlogs; 8) In Windows platforms, if you want that the database will start automatically then edit the registry: regedit go to HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\HOMEX change the key : ORA_<SID>_AUTOSTART=TRUE