How to set up LongReadLen and LongTruncOk?

[Jorge_Beteta]

Hello,
I'm developing in ASP NET and trying to read a LONG RAW column from an
Oracle Table.
I get this error: "ORA-01406: fetched column value was truncated... "
.. I read that you can avoid this error setting up LongReadLen and
LongTruncOk... but how and where? Could I do it in my oracle stored
procedure? Or do I have to set up it on my ASP NET application...
Thanks! (I'm using W2003 Server)

PROCEDURE SP_LISTAR_REP (R_NUEVO OUT CUR_PKG_REPRESENTANTES,
i_cod IN INTEGER)
IS
BEGIN
--LongTruncOk:=0 ; -- Here ?
OPEN R_NUEVO FOR
SELECT R.cod_op As cod_op,
R.cod_rep As cod_rep,
R.img_repres As img_repres
FROM TBL_REPRESENTANTES R,
WHERE R.cod = i_cod
END SP_LISTAR_REP;