Io 异常 The Network Adapter could not establish the connection的三种解决方法

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1.数据库配置错误

在设置URL时错误：例如数据库配置的URL是：jdbc:oracle:thin:@192.168.0.36:1521:orcl，通过ping命令可以坚持服务器IP是否正确

端口号错误：一般不会错误。Oracle默认的端口是1521，Mysql默认的端口是3306

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

3.数据库监听未启动

修改PC上注册表中的ImagePath值。我下面以主流的数据库ORACLE为例，重新启动数据库监听：

开始 → 运行→ 输入CMD→ 进入DOS命令提示界面，d:>lsnrctl LSNRCTL> status 或者 LSNRCTL> start

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Io 异常: The Network Adapter could not establish the connection的三种解决方法
Io 异常 The Network Adapter could not establish the connection的三种解决方法
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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