调试一个程序, 调试到一半, 下班回家, 程序卡在了某一行, 第二天早上回来一看, 发现了异常: Wed Sep :: GMT+: WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be establis…
1 详细异常 ser class threw exception: java.sql.SQLException: The last packet successfully received from the server was 39,444 milliseconds ago. The last packet sent successfully to the server was 39,444 milliseconds ago. is longer than the server configu…
今天访问已经架上服务器的网站,报错: Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 78,050,512 milliseconds ago. The last packet sent successfully to the server was 78,050,512 milliseconds ago.…
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 2,926,157 milliseconds ago. The last packet sent successfully to the server was 2,926,158 milliseconds ago. is longer than t…
原文地址:http://nkcoder.github.io/blog/20140712/mysql-reconnect-packet-lost/ 1.1 错误信息: Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 20,820,001 milliseconds ago. The last pac…
本地升级了下MySQL的版本,从5.6升为5.7,数据文件直接拷贝的,项目查询数据库报错: Could not retrieve transation read-only status server The last packet successfully received from the server was 20,519 milliseconds ago.  The last packet sent successfully to the server was 0 milliseconds…
使用Connector/J连接MySQL数据库,程序运行较长时间后就会报以下错误: Communications link failure,The last packet successfully received from the server was * **millisecond ago. The last packet successfully sent to the server was * **millisecond ago. 其中错误还会提示你修改wait_timeout或是使用C…
场景:一个上传接口,需要上传几十M的文件,文件中包含10几W的数据,然后对10+W的数据进行同步批量插入,每次批量插入1W.最后返回结果. 项目上线一段时间后,上传接口出现问题,数据库用的MySQL5.7.21,报了如下错误: 2018-07-16 01:30:03.497 ERROR com.alibaba.druid.pool.DruidDataSource Line:1594 - discard connection com.mysql.jdbc.exceptions.jdbc4.Comm…
在mac下使用brew安装mysql,之前没有使用过,今天启动的时候发现启动不了 huijundeMacBook-Pro:bin huijunzhang$ mysql ERROR (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) 查看mysql的安装位置: huijundeMacBook-Pro:bin huijunzhang$ which mysql /usr/local/bin/…
mysql数据库连接异常问题(总结) 1.1 前言   最近项目由1个数据源增加至了3个数据源(连接池使用C3P0),结果各种奇葩的数据库连接问题接踵而至,为防止将来再次遇到同样的问题不犯同样错误,现总结如下. 1.2  An attempt by a client to checkout a Connection has timed out  (连接超时) 这种情况基本是网络不稳定导致的:再者就是数据源配置参数有异常. 1.3 com.mysql.jdbc.exceptions.jdbc4.C…