RMAN duplicate fails with ORA-1180 (Doc ID 1375543.1)

Symptoms

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For the purposes of this document, the following fictitious environment is used as an example
to describe the procedure:

Database/Instance Name = ORCL
Directory = /oracle/orcl, /backup/orcl and all subdirectories

Attempting to create a physical standby database on a remote host (without connecting to that host). When RMAN reaches the point of creating the system datafile it aborts.

Recovery Manager: Release 11.2.0.2.0 - Production on Tue Nov 8 13:39:16 2011

RMAN> connect auxiliary /
connected to auxiliary database: ORCL (not mounted)

RMAN> DUPLICATE TARGET DATABASE
2> FOR STANDBY
3> BACKUP LOCATION '/backup/orcl'
4> NOFILENAMECHECK;
.... removed due to space restrictions
....
....
creating datafile file number=1 name=/oracle/orcl/system_01.dbf
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 11/08/2011 13:40:14
RMAN-05501: aborting duplication of target database
RMAN-03015: error occurred in stored script Memory Script
RMAN-06136: ORACLE error from auxiliary database: ORA-01180: can not create datafile 1
ORA-01110: data file 1: '/oracle/orcl/system_01.dbf'

Cause

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