All I know about the constraint is it\'s name (SYS_C003415), but I want to see it\'s definition.
SYS_C003415
Another option would be to reverse engineer the DDL...
DBMS_METADATA.GET_DDL('CONSTRAINT', 'SYS_C003415')
Some examples here....
http://www.psoug.org/reference/dbms_metadata.html