How to use bind_variable for connectivity between Oracle and SQLServer 2005

Question

The code specified below could be used as an example of how to call a remote SQLServer 2005 procedure from Oracle.
The problem I am facing is that I am not able to use the dbms_hs_passthrough.bind_variable without exceptions.
Could someone help me out on this?
declare
CREATE PROCEDURE dbo.OrcaMessageTranslator
@inp nvarchar(255),
@outp nvarchar(255) output
AS
BEGIN
select @outp = @inp+'output'
END
c integer;
nr integer;
inp varchar2(255);
outp varchar2(255);
sql_stmt varchar2(32767);
begin
dbms_output.put_line('call SQLServer procedure OrcaMessageTranslator');
dbms_output.put_line('value of input variable inp is HowToReplaceThisValueByBindVariable ');
sql_stmt := 'DECLARE @outp nvarchar(255)
EXEC dbo.OrcaMessageTranslator
@inp = N''HowToReplaceThisValueByBindVariable'',
@outp = @outp OUTPUT
SELECT @outp as N''@outp''';
c := dbms_hs_passthrough.open_cursor@pp_preorca;
dbms_hs_passthrough.parse@pp_preorca(c,sql_stmt);
nr := dbms_hs_passthrough.fetch_row@pp_preorca(c);
dbms_hs_passthrough.get_value@pp_preorca(c, 1, outp);
dbms_hs_passthrough.close_cursor@pp_preorca(c);
dbms_output.put_line('acquired value of output variable outp is '||outp);
end;

Answer 1

Hi,
BIND_VARIABLE is useful when you have only IN variable but in your case you have IN and OUT.
I don't know if you use the gateway for MS SQL SERVER or HSODBC/DG4ODBC but here how you can do to call a remote procedure with bind variables:
DECLARE
ret integer;
inp varchar2(255);
outp varchar2(255);
BEGIN
inp :='Hello World';
outp :='';
ret := "dbo"."in_out_proc_test"@tg4msql( inp, outp);
dbms_output.put_line('Input value: ' ||v_ut1||' - Output value: '||v_ut2);
END;
The MS SQL Server procedure belongs to the user "dbo" and the database link
being used is tg4msql.
The following line initilaize the out variables of the procedure with an
empty string:
outp :=''
I hope it helps you.
Regards
Mireille