Error while setting up dataguard RMAN-03015: error occurred in stored script Memory Script

Starting backup at 19-DEC-14
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=67 instance=RAC1 device type=DISK
RMAN-03009: failure of backup command on ORA_DISK_1 channel
ORA-19505: failed to identify file "/u01/app/oracle/product/11.2.0/db_1/dbs/orapwRAC2"
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
continuing other job steps, job failed will not be re-run
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command
RMAN-05501: aborting duplication of target database
RMAN-03015: error occurred in stored script Memory Script


This was fixed by setting up the tnsnames with SID on all primary and dr nodes