Oracle 9i cannot display bfile image properly

[Jack]

Hi,
We just upgrade from Oracle 8.1.7.4 to 9.2.0.4 in Solaris system. We
found all images display with Bfile do not work in Oracle 9i but they
work well in 8.1.7.4, no code change. could you please help us?
Here is the source code:

PROCEDURE bfileshow (bfilein bfile)
IS
mybfile bfile:=bfilein;
--l_amt number default 30;
l_amt BINARY_INTEGER := 1024;
l_off INTEGER := 1;
l_raw RAW(1024);
BEGIN
owa_util.mime_h eader('image/gif');
DBMS_LOB.OPEN (mybfile, DBMS_LOB.LOB_RE ADONLY);
LOOP
DBMS_LOB.READ (mybfile, l_amt, l_off,l_raw);
htp.prn(utl_raw .cast_to_varcha r2(l_raw));
l_off:=l_off+l_ amt;
END LOOP;
DBMS_LOB.CLOSE (mybfile);
EXCEPTION
WHEN NO_DATA_FOUND THEN
htp.p(sqlerrm);
dbms_lob.close (mybfile);
END bfileshow;

Thanks,

Jack