ORA-12170:TNS:使用sql plus在oracle 10g中发生连接超时

我是oracle的新手，我已经安装了带有sql plus的oracle 10g。我昨天使用了sql plus，但现在它给了我这个错误ORA-12170:TNS:Connect timeout发生在登录时。我正在使用SCOTT用户登录

我正在使用这些凭据登录：

用户名：Scott

密码：tiger

主机：orcl

我已经在谷歌上搜索过了，并尝试了一些解决方案，但它不起作用：(

以下是有关我的配置的一些详细信息：

sqlnet.ora

SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
  (SID_NAME = PLSExtProc)
  (ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
  (PROGRAM = extproc)
 )
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
  (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
  (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.9)(PORT = 1521))
)
)

ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.9)(PORT = 1521))
(CONNECT_DATA =
  (SERVER = DEDICATED)
  (SERVICE_NAME = orcl)
)
)

EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
  (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
  (SID = PLSExtProc)
  (PRESENTATION = RO)
)
)

listener.ora

SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
  (SID_NAME = PLSExtProc)
  (ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
  (PROGRAM = extproc)
 )
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
  (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
  (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.9)(PORT = 1521))
)
)

ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.9)(PORT = 1521))
(CONNECT_DATA =
  (SERVER = DEDICATED)
  (SERVICE_NAME = orcl)
)
)

EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
  (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
  (SID = PLSExtProc)
  (PRESENTATION = RO)
)
)

tnsnames.ora

SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
  (SID_NAME = PLSExtProc)
  (ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
  (PROGRAM = extproc)
 )
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
  (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
  (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.9)(PORT = 1521))
)
)

ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.9)(PORT = 1521))
(CONNECT_DATA =
  (SERVER = DEDICATED)
  (SERVICE_NAME = orcl)
)
)

EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
  (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
  (SID = PLSExtProc)
  (PRESENTATION = RO)
)
)

---

尝试ping 192.168.1.9。如果这样做有效，请尝试

tnsping orcl

从命令行。可能有防火墙阻止您对Oracle DB的网络访问