Creation of Physical standby DB

alter database create standby controlfile as '/orcl/oradata/PROD2/ctrl_PROD_01.ctl';

$ rman target /
RMAN> BACKUP CURRENT CONTROLFILE FOR STANDBY FORMAT ‘/backup/%d_%s_%T_CONTROL_STDBY’ ;

Export ORACLE_SID=standby_db

rman target sys/passwd@Primary_db auxiliary /

run {
allocate auxiliary channel c1 type disk;
allocate auxiliary channel c2 type disk;
allocate auxiliary channel c3 type disk;
allocate auxiliary channel c4 type disk;
allocate auxiliary channel c5 type disk;
allocate auxiliary channel c6 type disk;
DUPLICATE TARGET DATABASE FOR STANDBY;
}