1. First check whether your client pc can connect to your server physically2. If connection is no problem , check your server listener.log
3. reconfig your oracle client
4. if still not ok , reinstall
3. reconfig your oracle client
4. if still not ok , reinstall
同样的现象
但是windows2000不行,这到底是什么原因呢,(oracle client已经重新安装过)