CLOB distinct Problem

*****Oracle*******
I am selecting distinct records from a table, but table has one column whose datatype is CLOB, so i got errors in select. does anybody have solution over it.

select distinct * from dept.

dept structure::

id varchhar(5)
name char (30)
message CLOB Received on Tue Apr 18 2006 - 07:57:53 CDT