{"Unsupported column datatype"}

Question

I am trying to execute a procedure that returns a stored procedure. My version of Oracle DB is 9.2 and the ODP .NET version is 10.2.0.100
My C# code looks like this.
  try
                OracleCommand od = new OracleCommand();
                od.Connection = oc;
                OracleParameter opBranchNo;
                OracleParameter opSysRef;
                od.CommandType = System.Data.CommandType.StoredProcedure;
                od.CommandText = "pkg_fetchleaseinfo.proc_fetchleaseheader";
                opBranchNo = new OracleParameter("IBRANCH_ID", OracleDbType.Varchar2, 3, "044");
                opBranchNo.Direction = System.Data.ParameterDirection.Input;
                od.Parameters.Add(opBranchNo);
                opSysRef = new OracleParameter();
                opSysRef.ParameterName = "REC_SET";
                opSysRef.Direction = System.Data.ParameterDirection.Output;
                opSysRef.OracleDbType = OracleDbType.RefCursor;
                od.Parameters.Add(opSysRef);
                od.Prepare();
                od.ExecuteNonQuery();
                Oracle.DataAccess.Types.OracleRefCursor sysref = (Oracle.DataAccess.Types.OracleRefCursor)opSysRef.Value;
                return sysref.GetDataReader();
                //OracleDataReader dr1 = ((Oracle.DataAccess.Types.OracleRefCursor) opSysRef.Value).GetDataReader();
                //return dr1;
            catch (Exception e)
                Console.WriteLine("Error " + e.ToString());
                return null;
            }My Oracle Procedure code looks like this
PROCEDURE proc_fetchleaseheader(ibranch_id IN VARCHAR2,
                                rec_set    OUT SYS_REFCURSOR) IS
x_rec genericCursor;
BEGIN
  OPEN x_rec FOR
    SELECT getleaseheaderrows(ibranch_id) FROM dual;
  rec_set := x_rec; 
EXCEPTION
  WHEN OTHERS THEN
    RAISE;
END;It appears the the GetDataReader function is not supported. Also the function getleaseheaderrows returns a PIPELINED row and I am not sure if that would cause my code to fail.

Answer 1

Hi,
I don't have 10.2.0.1 handy to test with, but I tested this on 11106.20 and it works for me. I had to change the stored proc slightly, but perhaps you can test the same?
It's based on this blog from my buddy Mark Williams:
http://oradim.blogspot.com/2007/10/odpnet-tip-using-pipelined-functions.html
Hope it helps,
Greg
http://oradim.blogspot.com/2007/10/odpnet-tip-using-pipelined-functions.html
create or replace package pkg_fetchleaseinfo as
procedure proc_fetchleaseheader(v1 in varchar2, v2 out sys_refcursor);
end;
create or replace package body pkg_fetchleaseinfo as
procedure proc_fetchleaseheader(v1 in varchar2, v2 out sys_refcursor) is
BEGIN
  OPEN v2 FOR SELECT * from table(pipeline_test.get_rows());
end;
end;
using System;
using System.Data;
using Oracle.DataAccess.Client;
using Oracle.DataAccess.Types;
namespace ConsoleApplication8
    class Program
        static void Main(string[] args)
            OracleConnection con = new OracleConnection("data source=orcl;user id=scott;password=tiger");
            con.Open();
            OracleCommand od = new OracleCommand();
            od.Connection = con;
            OracleParameter opBranchNo;
            OracleParameter opSysRef;
            od.CommandType = System.Data.CommandType.StoredProcedure;
            od.CommandText = "pkg_fetchleaseinfo.proc_fetchleaseheader";
            opBranchNo = new OracleParameter("IBRANCH_ID", OracleDbType.Varchar2, 3, "044");
            opBranchNo.Direction = System.Data.ParameterDirection.Input;
            od.Parameters.Add(opBranchNo);
            opSysRef = new OracleParameter();
            opSysRef.ParameterName = "REC_SET";
            opSysRef.Direction = System.Data.ParameterDirection.Output;
            opSysRef.OracleDbType = OracleDbType.RefCursor;
            od.Parameters.Add(opSysRef);
            od.Prepare();
            od.ExecuteNonQuery();
            Oracle.DataAccess.Types.OracleRefCursor sysref = (Oracle.DataAccess.Types.OracleRefCursor)opSysRef.Value;
            OracleDataReader rdr =  sysref.GetDataReader();
            while (rdr.Read())
                Console.WriteLine(rdr[0].ToString());
}OUTPUT
=========
John
Paul
George
Ringo
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