I'm using ODP.NET (migrating from Microsoft's provider), and I have got stuck on a stored procedure that returns a refcursor. I have the following PL/SQL procedure (I have changed it a little bit to make it more general):
PROCEDURE MyProc(parameter_no1 IN NUMBER, parameter_no2 IN NUMBER, RETCURSOR OUT ret_type) AS
BEGIN
OPEN RETCURSOR FOR
SELECT ad.logo logo
FROM tab_a a, tab_h h
WHERE a.id IS NOT NULL
AND a.h_id = h.id
AND a.no1 = parameter_no1
AND a.no2= parameter_no2;
END HanteraLogotype;
And then I have the folloing C# code to call it:
internal void RefCursorDataReader()
{
OracleCommand cmd = new OracleCommand("ABC$MYPACKAGE.MyProc", new OracleConnection(_constr));
cmd.CommandType = CommandType.StoredProcedure;
cmd.Connection.Open();
cmd.BindByName = true;
OracleParameter p = cmd.Parameters.Add("parameter_no1", OracleDbType.Decimal);
p.Value = 12345678;
p.Direction = ParameterDirection.Input;
p = cmd.Parameters.Add("parameter_no2", OracleDbType.Decimal);
p.Value = 123456;
p.Direction = ParameterDirection.Input;
p = cmd.Parameters.Add("RETCURSOR", OracleDbType.RefCursor);
p.Direction = ParameterDirection.Output;
OracleDataReader reader = cmd.ExecuteReader();
if (reader.Read())
{
System.Diagnostics.Debug.WriteLine(reader[0].GetType().ToString());
}
cmd.Connection.Close();
}
And when I run this, I keep getting this exception:
ORA-03106: fatal two-task communication protocol error
I have tried numerous different variations of parameters, their type, order etc, but nothing seems to help. It's the reader.Read() that throws the exception. I would really appreciate assistance on this one!
Added: the ret_type is defined as:
TYPE ret_type IS REF CURSOR;
