Oracle Error Message
RMAN-06438: error executing package DBMS_RCVMAN in string database
Reason for the Error
Recovery Manager requires the DBMS_RCVMAN package in the SYS schema of the indicated database. Normally this package is installed during database creation. To re-create the package, run the files dbmsrman.sql and prvtrmns.plb.
Solution
re-create the DBMS_RCVMAN package in the SYS schema.