dbms_metadata necessary privs

1. Object owner
2. SELECT_CATALOG_ROLE
3. SYS
   Otherwise you’ll receive

ORA-31603: object "XXX" of type VIEW not found in schema "AAA"
ORA-06512: at "SYS.DBMS_METADATA", line 5805
ORA-06512: at "SYS.DBMS_METADATA", line 8344
ORA-06512: at line 1