ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

当创建完毕oracle数据库以及监听器时候，连接数据库时会报如题错误，只需要在D:\app\Administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN目录下的listener.ora中添加如下语句即可：

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

(PROGRAM = extproc)

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

)

(SID_DESC =

(GLOBAL_DBNAME = jcms)

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

(SID_NAME = jcms)

)

)

LISTENER =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.22.168)(PORT = 1521))

)

ADR_BASE_LISTENER = D:\app\Administrator

其中红色部分为手动添加，然后重启oracle服务以及监听器即可连接成功。