Io 异常: The Network Adapter could not establish the connection
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这个异常的出现一般与数据库和你的PC的设置有关
这种异常的出现大致上有下面几种：
1。IP错误。
在设置URL时错误，例如：jdbc:oracle:thin:@192.168.0.36:1521:sharp
数据库服务器不正确：ping 服务器IP是否正确。不正确，将URL更改为正确
端口号错误：一般不会错误。
进行一下操作：在DOS上键入sqlplus，检查oracle是否开启
一却正常，执行下面第2步。
2。防火墙
如果机器上安装有放火墙，可能是服务器端口号屏蔽而造成的。关闭防火墙后，尝试重新连接。
仍然不行，执行第3步。
3。数据库监听未启动 修改PC上注册表中的ImagePath值。
我下面以现在主流的数据库ORACLE为例
重新手动启动数据库监听
4.你的jdbc驱动用得有问题，换个ojdbc14.jar
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
- Io 异常: The Network Adapter could not establish the connection
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