ORA-12170 连接超时

[liangsu]

ORACLE 11G 安装
用PLSQL登陆报错，我是ORACLE 菜鸟
高手指点啊


# Every line that begins with # is a comment line
#
# Create Oracle net service names, or aliases, for each database server
# you need to connect to.
#
# TNSNames.ora sample entry
#
# alias =
# (DESCRIPTION =
# (ADDRESS = (PROTOCOL = TCP)(HOST = myserver.mycompany.com)(PORT = 1521))
# (CONNECT_DATA =
# (SERVER = DEDICATED)
# (SERVICE_NAME = orcl)
# )
# )
#
# You can modify the entry below for your own database.
# <data source alias> = Name to use in the connection string Data Source
# <hostname or IP> = name or IP of the database server machine
# <port> = database server machine port to use
# <database service name> = name of the database service on the server

<data source alias> =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = <hostname or IP>)(PORT = <port>))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = <database service name>)
)
)
icare =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.84)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = oracl11g)
)
)


防火墙已经关闭

[秋雨飘落]

TNS超时，监听问题啊，

好多种可能性

看我空间，加我Q

[tangren]

如果本地登录，可以不使用tns连接串名称和不使用监听
如果没有启动启听，会返回ora-12541
先ping一下网络是否连通
然后再tnsping 连接串名测试一下