连接数据库出现：Connections could not be acquired from the underlying database
2014-01-02 17:08
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通常情况下，我们连接数据库时不会有大问题，今天遇到“Connections could not be acquired from the underlying database”，大意是不能连接当前所配置的数据库。出现这种问题,一般是配置参数有误。
因为我的数据库使用的是mysql数据库，前一段时间都是没有问题的，今天出现问题，程序配置对我来说是没有变化，最近几天的访问人数没有大的增加（其实就是我一个人在访问），因此可以断定不是连接数或者配置上的问题。
问题只可能出现在数据库问题！
使用plsqld工具连接数据库，出现密码已经过期，问题终于找到！
问题解决后，特地想了想这个问题查找思路：
提示 “Connections could not be acquired from the underlying database”，可能原因：
1.数据库用户名密码是否正确；2.连接数是否超过最大连接数
因为我的数据库使用的是mysql数据库，前一段时间都是没有问题的，今天出现问题，程序配置对我来说是没有变化，最近几天的访问人数没有大的增加（其实就是我一个人在访问），因此可以断定不是连接数或者配置上的问题。
问题只可能出现在数据库问题！
使用plsqld工具连接数据库，出现密码已经过期，问题终于找到！
问题解决后，特地想了想这个问题查找思路：
提示 “Connections could not be acquired from the underlying database”，可能原因：
1.数据库用户名密码是否正确；2.连接数是否超过最大连接数
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