数据库启动的监听器服务
在启动数据库的时候，有时候会报一个
Ora-12514：TNS：监听程序当前无法识别链接描述符中请求的服务，
在这种情况下，我们可以打开ORACLE安装目录下的listener.ora.
原始的配置如下
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = D:\oracle\product\10.1.0\Db_1)
      (PROGRAM = extproc)
    )
  )



LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
      )
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
      )
    )
  )
我们可以在SID_LIST_LISTENER后面加上
(SID_DESC =
(GLOBAL_DBNAME = ORACLE)
(ORACLE_HOME = D:\oracle\product\10.1.0\Db_1)
(SID_NAME = ORACLE)
)
结果如下：
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = D:\oracle\product\10.1.0\Db_1)
      (PROGRAM = extproc)
    )(SID_DESC =
(GLOBAL_DBNAME = ORACLE)
(ORACLE_HOME = D:\oracle\product\10.1.0\Db_1)
(SID_NAME = ORACLE)
)

  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
      )
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
      )
    )
  )