Backup Based RMAN DUPLICATE Without Connecting To Target Database

Backup Based RMAN DUPLICATE Without Connecting To Target Database

If you are performing a backup based RMAN duplicate and using a recovery catalog as well, it is not required to connect to the source database as TARGET in RMAN.

This method is advantageous where network connections from the auxiliary host to the source database are restricted or prone to intermittent disruptions. In duplication without a TARGET connection, the source database is unaffected by the duplication.

Steps:

1.Prepare the shell script for backup and source the database:

vi rmanclone.sh

chmod 775 rmanclone.sh

ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1
BACKUP_LOG_PATH=/home/oracle
export ORACLE_BASE
export ORACLE_HOME
export ORACLE_SID=GTP2PROD
export BACKUP_LOG_PATH
LOG_FILE=${BACKUP_LOG_PATH}/clone_db.log
$ORACLE_HOME/bin/rman msglog=${LOG_FILE} <<EOF

connect target /

run {
allocate channel t1 type disk;
allocate channel t2 type disk;
backup database format '/u01/rman_bkp/database_%d_%u_%s';
release channel t1;
release channel t2;
}
sql 'alter system archive log current';
run {
allocate channel a1 type disk;
allocate channel a2 type disk;
backup archivelog all format '/u01/rman_bkp/arch_%d_%u_%s';
release channel a1;
release channel a2;

}

run {
allocate channel c1 type disk;
backup current controlfile format '/u01/rman_bkp/control_%d_%u_%s';
release channel c1;
}

exit;

EOF

chmod 775 rmanclone.sh

nohup ./rmanclone.sh &

jobs -l


2.Verify the backups and transfer to destination side:

[oracle@host01 rman_bkp]$ ls -ltrh

total 1.2G

-rw-r----- 1 oracle oinstall 405M Apr 29 22:51 database_GTP2PROD_0ivtht5d_18
-rw-r----- 1 oracle oinstall 9.7M Apr 29 22:52 database_GTP2PROD_0jvtht8e_19
-rw-r----- 1 oracle oinstall 96K Apr 29 22:52 database_GTP2PROD_0kvtht8m_20
-rw-r----- 1 oracle oinstall 600M Apr 29 22:52 database_GTP2PROD_0hvtht5d_17
-rw-r----- 1 oracle oinstall 45M Apr 29 22:52 arch_GTP2PROD_0mvtht8v_22
-rw-r----- 1 oracle oinstall 52M Apr 29 22:52 arch_GTP2PROD_0lvtht8v_21
-rw-r----- 1 oracle oinstall 6.6M Apr 29 22:52 arch_GTP2PROD_0nvtht9f_23
-rw-r----- 1 oracle oinstall 9.7M Apr 29 22:52 control_GTP2PROD_0ovtht9i_24

scp -p * oracle@host02:/u01/oracle/rman_backups

3.Create the required directories in destination side:

mkdir -p /u01/app/oracle/admin/MQMARC/adump
mkdir -p /u01/app/oracle/oradata/MQMARC
mkdir -p /u01/app/oracle/fast_recovery_area/MQMARC
mkdir -p /u01/app/oracle/fast_recovery_area


4.Prepare pfile and nomount the database:

vi initMQMARC.ora';

MQMARC.__db_cache_size=2415919104
MQMARC.__java_pool_size=16777216
MQMARC.__large_pool_size=16777216
MQMARC.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment
MQMARC.__pga_aggregate_target=1040187392
MQMARC.__sga_target=3103784960
MQMARC.__shared_io_pool_size=0
MQMARC.__shared_pool_size=603979776
MQMARC.__streams_pool_size=16777216
*.audit_file_dest='/u01/app/oracle/admin/MQMARC/adump'
*.audit_trail='none'
*.compatible='11.2.0.0.0'
*.control_files='/u01/app/oracle/oradata/MQMARC/control01.ctl','/u01/app/oracle/fast_recovery_area/MQMARC/control02.ctl'
*.db_block_size=8192
*.db_domain=''
*.db_name='MQMARC'
*.db_recovery_file_dest='/u01/app/oracle/fast_recovery_area'
*.db_recovery_file_dest_size=4322230272
*.diagnostic_dest='/u01/app/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=MQMARCXDB)'
*.open_cursors=300
*.pga_aggregate_target=1032847360
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.sga_target=3098542080
*.undo_tablespace='UNDOTBS1'
*.db_flashback_retention_target=4320
*.global_names=TRUE
#*.local_listener='MQMARC'
*.log_file_name_convert='/u01/app/oracle/oradata/GTP2PROD/','/u01/app/oracle/oradata/MQMARC/'
*.db_file_name_convert='/u01/app/oracle/oradata/GTP2PROD/','/u01/app/oracle/oradata/MQMARC/'

startup nomount pfile='$ORACLE_HOME/dbs/initMQMARC.ora';


5.Run the RMAN duplicate command:

vi clone_MQMARC_db.sh

ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1
BACKUP_LOG_PATH=/home/oracle
export ORACLE_BASE
export ORACLE_HOME
export ORACLE_SID=MQMARC
export BACKUP_LOG_PATH
LOG_FILE=${BACKUP_LOG_PATH}/clone_mqmarc_db.log
/u01/app/oracle/product/11.2.0/dbhome_1/bin/rman msglog=${LOG_FILE} <<EOF
connect auxiliary /
run {
allocate auxiliary channel t1 type disk;
allocate auxiliary channel t2 type disk;
duplicate target database to MQMARC backup location '/u01/oracle/backup';
}
exit
EOF

chmod 775 clone_MQMARC_db.sh
nohup ./clone_MQMARC_db.sh &

6.Connect to database and check the status:

SQL> select name, open_mode, status from v$database,v$instance;
NAME OPEN_MODE STATUS
--------- -------------------- ------------
MQMARC READ WRITE OPEN

Note:

-RMAN will internally changed the SID during the duplicate command execution.
-It will open the database with resetlog option.
-Flashback is automatically on by duplicate command.