Oracle Error Message
RMAN-06900: WARNING: unable to generate V$RMAN_STATUS or V$RMAN_OUTPUT row
Reason for the Error
The routine createRmanStatusRow() or createRmanOutputRow() could add new row into V$RMAN_STATUS or V$RMAN_OUTPUT.
Solution
Check the associated error messages. If the associated error message indicates a condition that can be corrected, do so, otherwise contact Oracle.