R12 RAC to NON RAC Clone Using Rman

8/3/2019 R12 RAC to NON RAC Clone Using Rman

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R12 Clone using rmanThis article details the steps used to clone R12 RAC database to Single instance database usingRMAN duplicate command, Notice that we used the control file as a catalog database and theProduction will keep up and running.The databases used here are:Production: PRODCloned: CPCLONE

1-On the source system; Run the preclone script on both database and apps tiers.Database:

$ cd ORACLE_HOME/appsutil/scripts/$CONTEXT_NAME/$ perl adpreclone.plApplication:

$ cd $ADMIN_SCRIPTS_HOME/appsutil/scripts/$CONTEXT_NAME/$ perl adpreclone.pl2-Archive and move the Apps tier and Database home form the source to the target server:

For the application tier:

$ cd $APPL_TOP/../../..

$ tar cvf - apps| gzip > apps_PROD.tar.gz

For the database tier

$ cd $ORACLE_HOME/..

$ tar cvf db | gzip > db_PROD.tar.gz

3-Create full RMAN backup for the source database:$ export ORACLE_SID=PROD
http://mtalmasri.blogspot.com/2010/12/r12-clone-using-rman.htmlhttp://mtalmasri.blogspot.com/2010/12/r12-clone-using-rman.html


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$ rman target /

run{allocate channel d1 type disk;allocate channel d2 type disk;

backup format '/backup/MASTER/ERP/df_prodt%t_s%s_p%p.bak' database;

sql 'alter system archive log current';backup format '/backup/MASTER/ERP/df_archive%t_s%s_p%p.arc' archivelog all;release channel d1;release channel d2;}

4-Move the backup pieces generated from Rman to the target server to the same path or make a soft linkas the same backup original path to let Rman see it.

Example$ ln f -s /u02/CPCLONE/backup /backup/MASTER/ERP.5-Extract the archive files on the Target servers

For the application tier:

$ tar cvf - apps| gzip > apps_PROD.tar.gz

For the database tier

$ tar cvf db | gzip > db_PROD.tar.gz

Note: The current path depends on your configuration.

6-On the target system; Run the preclone script on the database tier.$ cd $ORACLE_HOME/appsutil/clone/bin

$ perl adcfgclone.pl dbTechStack

7-Edit the new created init file under $ORACLE_HOME/dbs to include the following parameters; Note we areusing ASM as data storage:


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_no_recovery_through_resetlogs=TRUE

db_file_name_convert =('+DATA1/prod', '/u01/CPCLONE/oradata')

log_file_name_convert =('+DATA1/prod', '/u01/CPCLONE/oradata')

and edit the following parameters if not have those valuesundo_management =AUTO

undo_tablespace =UNDOTBS1

db_name =cpclone

instance_name =cpclone

8-On the target system; Startup the database on nomount state:$ export $ORACLE_SID=CPCLONE

$ sqlplus / as sysdbaSQL> startup nomount pfile=initCPCLONE.ora;

9-Make the production database accessible from the clone database:$ cd $TNS_ADMIN

$ vi tnsnames.ora

And insert the follow entries:

PROD= (

DESCRIPTION=(

ADDRESS=(PROTOCOL=tcp)(HOST=gfmisdb1)

(PORT=1521))

(CONNECT_DATA=

(SERVICE_NAME=PROD)

(INSTANCE_NAME=PROD1)


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)

)

10-Test the connection to the production database:$ tnsping PROD

$ sqlplus apps/apps@PROD

11-Lunch rman to start the duplicate process:$ export $ORACLE_SID=CPCLONE

$ rman target sys/sys@prod auxiliary /

run

{allocate auxiliary channel C1 device type disk;

allocate auxiliary channel C2 device type disk;

duplicate target database to cpclone;

release channel C1;

release channel C2;

}

12-Shutdown the cpclone database and edit the parameter file as:

$ sqlplus / as sysdba

$ shutdown abort;

Edit the following parameters:

undo_management to =MANUAL

undo_tablespace=UNDOTBS1

13-Open the database in with resetlogs option:


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Sql> startup mount;

Sql> alter database open resetlogs;

Sql> drop tablespace APPS_UNDOTS1 including contents;Sql> CREATE UNDO TABLESPACE APPS_UNDOTS1 DATAFILE

'/u02/CPCLONE/oradata/datafile/undo01.dbf' SIZE 4000M AUTOEXTEND

ON NEXT 100M MAXSIZE 7000M

ONLINE

RETENTION NOGUARANTEE

BLOCKSIZE 8K

FLASHBACK ON;Then shutdown the database

Sql> shutdown immediate;

14-Edit the parameter file:Remove _no_recovery_through_resetlogs=TRUE and edit

undo_management=AUTO

undo_tablespace=APPS_UNDOTS1

15-Change the database mode to be in no archive log mode:


Sql> startup mount;

Sql> alter database noarchivelog;

Sql> alter database open;

Execute the following script

Sql> @$ORACLE_HOME/appsutil/install/[CONTEXT NAME]/adupdlib.sql so


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Sql> create spfile from pfile.

Sql> shutdown immediate;

Sql> startup;

16-After the database opened; execute the following script:cd $ORACLE_HOME/appsutil/clone/bin

perl adcfgclone.pl dbconfig $ORACLE_HOME/appsutil/$CONTEXT_NAME.xml

17-On the application tier run the following script:cd $COMMON_TOP/clone/bin

perl adcfgclone.pl appsTier

R12 RAC to NON RAC Clone Using Rman

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