ถามผู้รู้ การใช้งาน Oracle 11g Express การตั้งค่า TNS และ Listener และการเชื่อมต่อด้วย Vistual Studio

MULTIDRIVE =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = MultiDrive)
    )
  )

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = MultiDrive)
      (ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
      (SID_NAME = ORCL)
    )
  )

LISTENER =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = Wittaya-PC)(PORT = 1521))
  )

ADR_BASE_LISTENER = C:\oraclexe\app\oracle\product\11.2.0\client_1\log

SQLNET.AUTHENTICATION_SERVICES= (NTS)

NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

C:\Users\admin.admin-PC>lsnrctl services

LSNRCTL for 32-bit Windows: Version 11.2.0.2.0 - Production on 16-ก.ย. -2014 12:
21:59

Copyright (c) 1991, 2010, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0
         LOCAL SERVER
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0
         LOCAL SERVER
Service "XEXDB" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
    Handler(s):
      "D000" established:62 refused:0 current:0 max:1022 state:ready
         DISPATCHER <machine: WITTAYA-PC, pid: 4944>
         (ADDRESS=(PROTOCOL=tcp)(HOST=Wittaya-PC)(PORT=1479))
Service "xe" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:4 refused:0 state:ready
         LOCAL SERVER
The command completed successfully