数据库报ORA-12514，12514报错

Listener refused the connection with the following error: ORA-12514, TNS:listener does not currently know of service requested in connect descriptor.

原因：监听器配置问题，具体没搞懂，猜测是SID链接不匹配，监听器无法监听到orcl。

修改oracle安装目录下D:\app\xuannan\product\11.2.0\dbhome_1\network\admin\listener.ora文件

# listener.ora Network Configuration File: D:\app\xuannan\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 = D:\app\xuannan\product\11.2.0\dbhome_1)

(PROGRAM = extproc)

(ENVS = "EXTPROC_DLLS=ONLY:D:\app\xuannan\product\11.2.0\dbhome_1\bin\oraclr11.dll")

)

(SID_DESC =

(GLOBAL_DBNAME = orcl)

(ORACLE_HOME = D:\app\xuannan\product\11.2.0\dbhome_1)

(SID_NAME = orcl)

)

)

LISTENER =

(DESCRIPTION_LIST =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))

(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))

)

)

ADR_BASE_LISTENER = D:\app\xuannan

加上这一段就好了

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