ORA-12504: TNS: 监听程序在 CONNECT_DATA 中未获得 SERVICE_NAME
oracle是11g，我在服务器上部署web程序直接连本机数据库，

tnsnames.ora文件
# tnsnames.ora Network Configuration File: D:\app\Administrator\product\11.1.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

LISTENERBOB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.6.90)(PORT = 1521))
)
(CONNECT_DATA =
(Service_Name = orcl)
(SID = orcl)
)
)
listener.ora文件内容
# listener.ora Network Configuration File: D:\app\Administrator\product\11.1.0\db_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.

LISTENERIT =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.6.90)(PORT = 1521))
)

SID_LIST_LISTENERIT =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = Oracle8)
(ORACLE_HOME = D:\app\Administrator\product\11.1.0\db_1)
(SID_NAME = ORCL)
)
)


一直报 “ORA-12504: TNS: 监听程序在 CONNECT_DATA 中未获得 SERVICE_NAME” 错误，以前曾经可以过，好久没动，居然不行了，于是我把监听和net服务全部重新配置了，


[解决办法]
LISTENERBOB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.6.90)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)

[解决办法]

SQL code

listener.ora文件内容改成如下:SID_LIST_LISTENER =  (SID_LIST =    (SID_DESC =      (SID_NAME = PLSExtProc)      (ORACLE_HOME = D:\app\Administrator\product\11.1.0\db_1)      (PROGRAM = extproc)    )    (SID_DESC =      (GLOBAL_DBNAME = ORCL)      (ORACLE_HOME = D:\app\Administrator\product\11.1.0\db_1)      (SID_NAME = ORCL)    )  )LISTENER =  (DESCRIPTION_LIST =    (DESCRIPTION =      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))    )    (DESCRIPTION =      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.6.90)(PORT = 1521))    )  )--tnsnames.ora内容:LISTENERBOB =  (DESCRIPTION =    (ADDRESS_LIST =      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.6.90)(PORT = 1521))    )    (CONNECT_DATA =      (SERVICE_NAME = ORCL)    )  )
[解决办法]
先在system用户下查一下你的数据库实例名是否为“orcl”？：
  
select   value$   from   sys.props$   where   name='GLOBAL_DB_NAME';
[解决办法]
show parameter service_names
另外看看INIT.ORA文件里有service_names这一项吗？它的值是否等于ORCL
当然前提必须如楼上所说的你要确认名为ORCL的数据库实例存在