局域网（内网）可以连接没问题，外网最近两天连不上（以前能连），报以下错：
Fatal NI connect error 12170.
VERSION INFORMATION:
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 10.2.0.1.0 - Production
Time: 22-7月 -2011 10:09:30
Tracing not turned on.
Tns error struct:
ns main err code: 12535
TNS-12535: TNS: 操作超时
ns secondary err code: 12560
nt main err code: 505
TNS-00505: 操作超时
nt secondary err code: 60
nt OS err code: 0
Client address: <unknown>
ora配值 (外网 xmbw.vicp.net 为域名)如下：
xmbwvicpnet =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = xmbw.vicp.net)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = orcl)
)
)
------解决方案--------------------
具体是否做了端口映射。
------解决方案--------------------
把域名改成IP地址试试
------解决方案--------------------
没改机器名吧