Oracle Error RMAN-05521: DUPLICATE without CATALOG and TARGET not open requires that UNDO TABLESPACE is specified

Oracle Error Message

RMAN-05521: DUPLICATE without CATALOG and TARGET not open requires that UNDO TABLESPACE is specified

Reason for the Error

A DUPLICATE was attempted when target database was not open without connection to a recovery catalog. It is necessary that the list of tablespaces with undo segments is provided with the UNDO TABLESPACE clause.

Solution

Retry the command specifying the list of tablespaces with undo segments using the UNDO TABLESPACE clause.