Oracle TIFF image query

Program.cs

using System.Drawing;
using System.IO;
using Oracle.ManagedDataAccess.Client;

namespace OracleTiffImage
{
    static class Program
    {
        private const string CONNECTION_STRING = "data source=DB;user id=USER;password=\"password\";pooling=false";

        static void Main()
        {
            using (var cn = new OracleConnection(CONNECTION_STRING))
            {
                var imgCmd = new OracleCommand("select SIGNATURE from image_table", cn)
                {
                    InitialLONGFetchSize = -1
                };
                cn.Open();
                var reader = imgCmd.ExecuteReader();
                if (reader.Read())
                {
                    var imgBinary = reader.GetOracleBinary(0);
                    var imgBytes = imgBinary.Value;
                    var stream = new MemoryStream();
                    stream.Write(imgBytes, 0, imgBytes.Length);
                    var bm = new Bitmap(stream);
                    bm.Save("d:\\image.tif", System.Drawing.Imaging.ImageFormat.Tiff);
                }
                reader.Close();
            }
        }
    }
}