RMAN Cloning (Refreshing) ASM/RAC database to ASM/RAC database

Assumptions:

Both dbs are on the same server
10.2.0.4
Source DB: SOURCE
Target DB: TARGET
Source Database can be in NOARCHIVE LOG MODE.
Target DB already exists (Okay if it doesn't. Just nomount the db )

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STEP 1: COLD BACKUP SOURCE DATABASE.

srvctl stop database -d SOURCE

export ORACLE_SID=SOURCE1
export ORACLE_HOME=/u01/app/oracle/10gR2

rman msglog SOURCE_cold_backup.log << EOF
connect target /
startup mount;
CONFIGURE CONTROLFILE AUTOBACKUP ON;
run {
allocate channel d1 type disk format '/u01/dumps/rman_SOURCE/%d_S_%s_P_%p_T_%t';
allocate channel d2 type disk format '/u01/dumps/rman_SOURCE/%d_S_%s_P_%p_T_%t';
allocate channel d3 type disk format '/u01/dumps/rman_SOURCE/%d_S_%s_P_%p_T_%t';
allocate channel d4 type disk format '/u01/dumps/rman_SOURCE/%d_S_%s_P_%p_T_%t';
allocate channel d5 type disk format '/u01/dumps/rman_SOURCE/%d_S_%s_P_%p_T_%t';
backup database tag=COLD_BACKUP;
}
EOF

srvctl start database -d SOURCE

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STEP 2: TARGET DATABASE CLUSTER_DATABASE=FALSE

export ORACLE_SID=TARGET1
alter system set cluster_database=false scope=spfile sid='*';
srvctl stop database -d TARGET
startup nomount;

-- Delete datafiles in ASM diskgroup.
ASMCMD [+diskg/TARGET/datafile] > rm *

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STEP 3: TARGET DATABASE CLUSTER_DATABASE=FALSE

startup nomount;

ORACLE_SID=TARGET1; export ORACLE_SID
rman msglog TARGET_clone.log << EOF
connect target sys/password@SOURCE1
connect auxiliary /
run
{
allocate channel ch1 type disk;
allocate channel ch2 type disk;
allocate auxiliary channel d1 device type disk;
allocate auxiliary channel d2 device type disk;
duplicate target database to TARGET;
}
EOF


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STEP 4: TARGET DATABASE CLUSTER_DATABASE=TRUE

export ORACLE_SID=TARGET1
alter system set cluster_database=TRUE scope=spfile sid='*';
alter system set cluster_database_instances=2 scope=spfile sid='*';
shutdown immediate;
exit
10000 SCOPE=SPFILE sid='*';