连接本地Oracle 11g时 ORA-12514:TNS:监听程序当前无法识别连接描述符中请求的服务

检查监听状态：
C:\Documents and Settings\Administrator>lsnrctl status

LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 15-11月-2012 11:3
0:32

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

正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=20121114-1728)(PORT=1521)))

LISTENER 的 STATUS
------------------------
别名                      LISTENER
版本                      TNSLSNR for 32-bit Windows: Version 11.2.0.1.0 - Produ
ction
启动日期                  14-11月-2012 20:40:20
正常运行时间              0 天 14 小时 50 分 13 秒
跟踪级别                  off
安全性                    ON: Local OS Authentication
SNMP                      OFF
监听程序参数文件          E:\app\Administrator\product\11.2.0\dbhome_1\network\a
dmin\listener.ora
监听程序日志文件          e:\app\administrator\diag\tnslsnr\20121114-1728\listen
er\alert\log.xml
监听端点概要...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=20121114-1728)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
服务摘要..
服务 "CLRExtProc" 包含 1 个实例。
  实例 "CLRExtProc", 状态 UNKNOWN, 包含此服务的 1 个处理程序...
服务 "orcl" 包含 1 个实例。
  实例 "orcl", 状态 READY, 包含此服务的 1 个处理程序...
服务 "orclXDB" 包含 1 个实例。
  实例 "orcl", 状态 READY, 包含此服务的 1 个处理程序...
命令执行成功

C:\Documents and Settings\Administrator>tnsping orcl

TNS Ping Utility for 32-bit Windows: Version 11.2.0.1.0 - Production on 15-11月-
2012 11:39:43

Copyright (c) 1997, 2010, Oracle.  All rights reserved.

已使用的参数文件:
E:\app\Administrator\product\11.2.0\dbhome_1\network\admin\sqlnet.ora

已使用 TNSNAMES 适配器来解析别名
尝试连接 (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 20121114-1728)(PORT =
 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl)))
OK (120 毫秒)

看起来，好像都是正常的。

检查监听文件：

# listener.ora Network Configuration File: E:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = E:\app\Administrator\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:E:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 20121114-1728)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )

ADR_BASE_LISTENER = E:\app\Administrator

在SID监听里面加上：

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = E:\app\Administrator\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:E:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )

   (SID_DESC =

       (GLOBAL_DBNAME = ORCL)
       (ORACLE_HOME =E:\app\Administrator\product\11.2.0\dbhome_1) 
       (SID_NAME = ORCL)

    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 20121114-1728)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )

 --ps:加上标黑段落。