Rman duplication of database to the same server and same disk group

Question

Hi,
We have multiple databases - rmsprd1 and oidprd1 on asm disk groups - ASMDG_DAT01 and ASMDG_FRA01 on a server.
Both these databases are single instance asm based databases.
I am trying to do a rman duplication from rmsprd1 to rmsprd2 in the same server. I intend to use the same asm disk groups - ASMDG_DAT01 and ASMDG_FRA01.
Is this possible ?
Currently I have the following structure
+ASMDG_DAT01/RMSPRD1/DATAFILE
+ASMDG_DAT01/RMSPRD1/CHANGETRACKING/
+ASMDG_DAT01/RMSPRD1/CONTROLFILE/
+ASMDG_DAT01/RMSPRD1/DATAFILE/
+ASMDG_DAT01/RMSPRD1/ONLINELOG/
+ASMDG_DAT01/RMSPRD1/PARAMETERFILE/
+ASMDG_DAT01/RMSPRD1/TEMPFILE/
+ASMDG_FRA01/RMSPRD1/AUTOBACKUP/
+ASMDG_FRA01/RMSPRD1/BACKUPSET/
+ASMDG_FRA01/RMSPRD1/CONTROLFILE/
+ASMDG_FRA01/RMSPRD1/DATAFILE/
+ASMDG_FRA01/RMSPRD1/ONLINELOG/
Will I be able to create something like
+ASMDG_DAT01/RMSPRD2/DATAFILE
+ASMDG_DAT01/RMSPRD2/CHANGETRACKING/
+ASMDG_DAT01/RMSPRD2/CONTROLFILE/
+ASMDG_DAT01/RMSPRD2/DATAFILE/
+ASMDG_DAT01/RMSPRD2/ONLINELOG/
+ASMDG_DAT01/RMSPRD2/PARAMETERFILE/
+ASMDG_DAT01/RMSPRD2/TEMPFILE/
+ASMDG_FRA01/RMSPRD2/AUTOBACKUP/
+ASMDG_FRA01/RMSPRD2/BACKUPSET/
+ASMDG_FRA01/RMSPRD2/CONTROLFILE/
+ASMDG_FRA01/RMSPRD2/DATAFILE/
+ASMDG_FRA01/RMSPRD2/ONLINELOG/
I know that I can create a different asm disk group for the rman duplication but this is proving to be a hassle.
Thanks
Sandeep

Answer 1

Hi,
I have found the answer working with Oracle via a service request. Admittedly there was no direct oracle documentation for doing this and hence documenting the steps here.
No legalities, formalities involved please.
Here are the steps - rmsprd1 is the source, rmsprd2 is the target, +ASM is the asm instance supporting both rmsprd1 and rmsprd2. The intention is to put both the source and destination in the same server. The backupset backup in location /dbaadm/sandeep_rman_refresh will be used for the duplication.
1) Take rman backupset backup of the source database - rmsprd1
rman_take_backup.ksh ( Take backup of source - rmsprd1 using rman ). The contents of the rman_take_backup.sh script are given below :
rm /dbaadm/sandeep_rman_refresh/*
export NLS_DATE_FORMAT='YYYY-MM-DD:HH24:MI:SS'
rman target / <<EOF
run
allocate channel d1 device type disk format '/dbaadm/sandeep_rman_refresh/%U';
allocate channel d2 device type disk format '/dbaadm/sandeep_rman_refresh/%U';
allocate channel d3 device type disk format '/dbaadm/sandeep_rman_refresh/%U';
allocate channel d4 device type disk format '/dbaadm/sandeep_rman_refresh/%U';
allocate channel d5 device type disk format '/dbaadm/sandeep_rman_refresh/%U';
allocate channel d6 device type disk format '/dbaadm/sandeep_rman_refresh/%U';
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/dbaadm/sandeep_rman_refresh/%F';
backup as backupset database plus archivelog tag 'clonebackupset';
EOF
2) Make the directories for destination database ( rmsprd2 )
/opt/oracle/admin> mkdir -p rmsprd2/adump rmsprd2/dpdump rmsprd2/pfile rmsprd2/scripts
3) Create pfile from rmsprd1 spfile. copy/rename the pfile to make a pfile for rmsprd2.
4) Edit listener.ora in ASM ORACLE_HOME and edit tnsnames.ora in DB ORACLE_HOME
listener.ora
LISTENER_RMSPRD2 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1522))
(ADDRESS = (PROTOCOL = TCP)(HOST = kirkjerpdb01.kirklands.com)(PORT = 1522))
SID_LIST_LISTENER_RMSPRD2 =
(SID_LIST =
(SID_DESC =
( ORACLE_HOME = /opt/oracle/product/11.2.0/db_1 )
( SID_NAME = rmsprd2 )
ADR_BASE_LISTENER_RMSPRD2 = /opt/oracle
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_RMSPRD2=ON # Section added by Sandeep
SUBSCRIBE_FOR_NODE_DOWN_EVENT_LISTENER_RMSPRD2=OFF
ADMIN_RESTRICTIONS_LISTENER_RMSPRD2=ON
tnsnames.ora ( http://francispaulraj.wordpress.com/ora-12528-tnslistener-all-appropriate-instances-are-blocking-new-connections/ )
RMSPRD2 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = kirkjerpdb01.kirklands.com)(PORT = 1522))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = rmsprd2)
(UR = A)
5) Build a passwordfile ( I just copied and renamed it )
6) Edit /etc/oratab to add database entry for rmsprd2
7) Set the environment for rmsprd2
. oraenv
rmsprd2
8) Startup nomount of rmsprd2
sqlplus / as sysdba
startup nomount pfile=/opt/oracle/admin/rmsprd2/pfile/initrmsprd2.ora
9) Create spfile from pfile='/opt/oracle/admin/rmsprd2/pfile/initrmsprd2.ora';
10) shutdown and startup rmsprd2 with spfile
SQL> shutdown abort;
ORACLE instance shut down.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 1068937216 bytes
Fixed Size 2213632 bytes
Variable Size 788531456 bytes
Database Buffers 268435456 bytes
Redo Buffers 9756672 bytes
11) We are now ready for duplication from rmsprd1 ( source ) to rmsprd2 ( destination ) both using +ASM standalone asm instance. set the environment to rmsprd1and fire away.
Please note that the duplicate script is only connecting to auxilary database ( rmsprd2 ) and using the backup location for the duplication.
I used a unix shell script -rman_duplicate_from_backup.ksh. The contents are given below :
$ORACLE_HOME/bin/rman auxiliary sys/prd123@rmsprd2 log=rman_duplicate_from_backup.log << EOF
run
allocate auxiliary channel d1 device type disk;
allocate auxiliary channel d2 device type disk;
allocate auxiliary channel d3 device type disk;
allocate auxiliary channel d4 device type disk;
allocate auxiliary channel d5 device type disk;
allocate auxiliary channel d6 device type disk;
DUPLICATE DATABASE TO rmsprd2
BACKUP LOCATION '/dbaadm/sandeep_rman_refresh';
EOF
12) Voila - the rmsprd1 to rmsprd2 is done.....
Hope this helps somebody else wanting to do the same excercize. Have Fun.....
regards
Sandeep