异常名称 //数据源拒绝从服务器建立连接.消息:"连接太多" com.MySQL.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too many connections" 原因一 MYSQL安装目录打开MY.INI. 找到max_connections…

详细错误信息: Caused by: com.MySQL.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections" at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Nat…

http://www.oschina.net/question/558677_66703 com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"     "Too many connections"错误 尝试…

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too many connections" at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.…

报错: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too many connections" at sun.reflect.GeneratedConstructorAccessor16.newInstance(Unknown Source) at…

错误叙述性说明: 測试一段时间没有不论什么问题.今天突然用户无法登录,报错如Data source rejected establishment of connection,  message from server: "Too many connections" 错误原因: 太多的连接数,登录用户过多,配置的mysql连接数过小.或者某些连接没有关闭,导致连接数过大. 问题的解决: 改动mysql的my.ini配置文件,网上的说法:mysql安装文件夹下的my.ini中设定的并发连接…

DAOProxy的代码:下面代码中红色高亮的就是出问题的地方,DAOFactory中会构造一个PersonDAOProxy,调用listPersons或者addPerson显然会导致递归,从而导致MySQL链接数溢出!将高亮处的代码修改为:dao.listPersons().dao.addPerson(person)即可! public class PersonDAOProxy implements IPersonDAO { private DatabaseConnection conn = n…

window7 64位系统,MySQL5.7 问题:在使用shell进行数据表更新操作的过程,输入以下查询语句: ,; 被查询的表记录数达到500W条,在查询过程中出现如题目所示的问题,提示"lost connection to mysql server during query",同时电脑上的MySQL服务自动关闭掉. 已经查找过的地方: 配置文件:my.ini的设置已经设置成max_allowed_packet=2048M 到底是什么问题?…

前段时间,接手一个项目使用的是原始的jdbc作为数据库的访问,发布到服务器上在运行了一段时间之后总是会出现无法访问的情况,登录到服务器,查看tomcat日志发现总是报如下的错误. Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too man…

报错信息 Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too many connections" at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native…