Trouble using a function in the where clause

Question

Hello,
I am using a function found at ask.tom.oracle.com which converts a long data type to a character. The function is returning an error when it is placed in the where clause. The sql statement , error message and the function from ask tom are shown below. Does anyone know how to fix this?
<pre>
SELECT A.FLDPHYSICAL,
A.FLDEXPOSURE,
A.FLDDATEDUE,
A.FLDDATELAST,
A.FLDEMPLOYEE,
B.FLDBDATE,
B.FLDMAILSTOP,
B.FLDREC_NUM,
B.FLDLNAME,
B.FLDMI,
B.FLDFNAME,
B.FLDBDATE,
B.FLDDEPT,
B.FLDSTATUS,
B.FLDSSN,
B.FLDHOMEPHON,
B.FLDWORKPHON,
B.FLDID,
B.FLDDIVISION
FROM REQEXAM A,
EMPLOYEE B,
EMPLOYEE_MEMO C
WHERE A.FLDEMPLOYEE = B.FLDREC_NUM
AND b.flduserstr = c.fldrec_num
AND OHM_PKG.GET_LONG('EMPLOYEE_MEMO', 'FLDDATA', C.ROWID) LIKE '%CDL YES%'
AND A.FLDDATEDUE > '01/01/1900'
AND A.FLDPHYSICAL ='CDP'
ORDER BY B.FLDDIVISION,
B.FLDLNAME,
B.FLDFNAME,
B.FLDMI,
A.FLDDATEDUE
The error message
Error at Command Line:26 Column:4
Error report:
SQL Error: ORA-00904: "OHM_PKG"."GET_LONG": invalid identifier
00904. 00000 - "%s: invalid identifier"
create or replace
PACKAGE OHM_PKG AS
/* TODO enter package declarations (types, exceptions, methods etc) here */
function getlong( p_tname in varchar2,p_cname in varchar2,p_rowid in rowid ) return varchar2;
END OHM_PKG;
create or replace
PACKAGE BODY OHM_PKG AS
function getlong( p_tname in varchar2,p_cname in varchar2,p_rowid in rowid ) return varchar2 as
l_cursor integer default dbms_sql.open_cursor;
l_n number;
l_long_val varchar2(4000);
l_long_len number;
l_buflen number := 4000;
l_curpos number := 0;
begin
dbms_sql.parse( l_cursor,
'select ' || p_cname || ' from ' || p_tname ||
' where rowid = :x',
dbms_sql.native );
dbms_sql.bind_variable( l_cursor, ':x', p_rowid );
dbms_sql.define_column_long(l_cursor, 1);
l_n := dbms_sql.execute(l_cursor);
if (dbms_sql.fetch_rows(l_cursor)>0)
then
dbms_sql.column_value_long(l_cursor, 1, l_buflen, l_curpos ,
l_long_val, l_long_len );
end if;
dbms_sql.close_cursor(l_cursor);
return l_long_val;
end getlong;
END OHM_PKG;
</prev>

Answer 1

Remove the '_' from the function's name as below:
AND OHM_PKG.GETLONG('EMPLOYEE_MEMO', 'FLDDATA', C.ROWID) LIKE '%CDL YES%'