Oracle cold backup

Hi,

I would like to run oracle cold backup.
1. Does it still need default-application-oracle policy?
2. In which line in this script, I need to add the policy name?

CMD_STR="
ORACLE_HOME=$ORACLE_HOME
export ORACLE_HOME
ORACLE_SID=$ORACLE_SID
export ORACLE_SID
$RMAN target $TARGET_CONNECT_STR nocatalog msglog $RMAN_LOG_FILE append << EOF
RUN {
ALLOCATE CHANNEL ch00 TYPE 'SBT_TAPE';
ALLOCATE CHANNEL ch01 TYPE 'SBT_TAPE';
BACKUP
    $BACKUP_TYPE
    FORMAT 'bk_u%u_s%s_p%p_t%t'
    DATABASE;
    sql 'alter database open';
RELEASE CHANNEL ch00;
RELEASE CHANNEL ch01;
}
EOF

Thanks