select OBJECT_PATH, COMMENTS, NAMED
from dba_export_objects
where het_type='DATABASE_EXPORT'
union
select unique TAG, CMNT, NULL
from impcalloutreg$
where cmnt is not null
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SELECT OBJECT_PATH , COMMENTS , NAMED
FROM DBA_EXPORT_OBJECTS
WHERE HET_TYPE='DATABASE_EXPORT'
UNION
SELECT UNIQUE TAG , CMNT , NULL
FROM IMPCALLOUTREG$
WHERE CMNT IS NOT NULL