System.InvalidOperationException

Hi experts, I developed a web service that connects to an oracle database and I have the following error:
System.InvalidOperationException: Attempting to load the Oracle client libraries threw BadImageFormatException. This problem will occur when running 64-bit mode with the client component 32-bit Oracle installed. ---> System.BadImageFormatException: Attempt to load a program with an incorrect format. (Exception from HRESULT: 0x8007000b)
   en System.Data.Common.UnsafeNativeMethods.OCILobCopy2(IntPtr svchp, IntPtr errhp, IntPtr dst_locp, IntPtr src_locp, UInt64 amount, UInt64 dst_offset, UInt64 src_offset)
   en System.Data.OracleClient.OCI.DetermineClientVersion()
   --- Fin del seguimiento de la pila de la excepción interna ---
   en wsConsultarInscripciones.consultar.MostrarCursosHabilitadosPAP() en C:\Users\elopez\Documents\AMAG\slnWSExcelInscritos\wsConsultarInscripciones\consultar.asmx.cs:línea 48

My machine is windows seven of 64 bits.
I executed the project in 32 bit and 64-bit and I have the same error. Attached Image

This is my code:
[WebMethod]
        public DataSet MostrarCursosHabilitadosPAP()
        {
            OracleConnection con;
            OracleCommand cmd;
            OracleDataAdapter adpt;
            DataSet ds = new DataSet();
            string SP = "pckCurso.upCursosHabilitadosPAPws";
            con = new OracleConnection(ConfigurationManager.ConnectionStrings["OracleDesa"].ConnectionString);

            try
            {
                cmd = new OracleCommand(SP, con);
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.Parameters.Add("pCursor", OracleType.Cursor).Direction = ParameterDirection.Output;
                adpt = new OracleDataAdapter(cmd);
                con.Open();
                adpt.Fill(ds);
                con.Close();
                return ds;
            }
            catch (Exception ex)
            {
               
                throw ex;
            }
           
        }
compilacion.jpg