java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection解决方案
2014-04-18 14:29
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这个问题是昨天在将一个现有无误的项目导入到Myeclipse6.0中运行时遇到，此异常是指网络适配器无法建立连接，产生此类错误的原因有很多，经过自己的分析和向别人请教，最后解决了此问题。
我这错误问题是在：Oracle安装目录下的listener.ora和tnsnames.ora 文件中给分配的端口号是1522，而不是我们平常用的1521。所以只要修改配置文件中的端口号即可。
这个问题还可能的原因：
1、数据库服务或监听未启动
2、数据库连接参数书写不正确
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