Querying a Table in Visual Basic 2010 from the organization

Hello, I am making a query to a table and did not return information, instruction before you step as the number of the organization, could help solve the Why?
Thanks!

Schedule the code

        Dim oCon As OracleConnection = New OracleConnection(sCadenaConexion)

        oCon.Open()

        Dim command As OracleCommand =  New OracleCommand("begin apps.fnd_client_info.set_org_context(102); end;", oCon)

        command.ExecuteNonQuery()

  Dim reader As OracleDataReader

        Dim sql As String = "SELECT COUNT(trx.trx_number) facturas" & _

                              "  FROM ra_customer_trx_all trx," & _

                              "       ar_customers cu," & _

                              "       fnd_lookup_values lkv," & _

                              "       hr_organization_units_v org," & _

                              "       ra_cust_trx_types_all trt," & _

                              "       ra_salesreps_all sr" & _