The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. (关于jdbc)
The last packet sent successfully to the server was milliseconds ago. The driver has not received any packets from the server.
今天操作数据库较大数据库访问量的时候出现问题,大致是数据库连接缓冲池的问题,弄了半天的mysql (ubuntu)。
解决办法:
(1)使用JDBC URL中使用autoReconnect属性,url添加
&autoReconnect=true&failOverReadOnly=false
例如:
String URL = "jdbc:mysql://localhost:3306/mxManage&autoReconnect=true&failOverReadOnly=false";
(2) 修改MySQL的参数. /etc/my.cnf 添加
[mysqld]
wait_timeout=31536000
interactive_timeout=31536000
(3)重启mysql
service mysql restart
原因分析:
(1)大量数据访问情况下,mysql connection连接有可能失效
(2)长时间不妨问,connection会失效
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. (关于jdbc)的更多相关文章
- The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
今天项目中报了如下错误 The last packet sent successfully to the server was 0 milliseconds ago. The driver has n ...
- Communications link failure;;The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure::The ...
- 【异常】The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
1 详细异常信息 The last packet sent successfully to the server was milliseconds ago. The driver has not re ...
- mysql异常 : The driver has not received any packets from the server.
异常: 结论:域名写错了或报这个异常
- MySql8.0数据库链接报错The driver has not received any packets from the server
1.我使用MySql数据库8.0版本,然后驱动改成了 jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://127.0.0.1:3306 ...
- The driver has not received any packets from the server
解决方法: jdbc的url添加参数: jdbc.url=jdbc:mysql://localhost:3306/totosea?useUnicode=true&characterEncodi ...
- The last packet sent successfully to the server was 0 milliseconds ago.[nutch---mysql ]
今天在使用JDBC操作mysql时遇到下面的异常信息: 引用 The last packet sent successfully to the server was 0 milliseconds ag ...
- 解决异常:“The last packet sent successfully to the server was 0 milliseconds ago. ”的办法
出现异常"The last packet sent successfully to the server was 0 milliseconds ago."的大部分原因是由于数据库回 ...
- The last packet successfully received from the server was 20,519 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago.
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 ...
随机推荐
- 【HDOJ】2604 Queuing
递推,推得f(n) = f(n-1) + f(n-3) + f(n-4).然后转换成矩阵相乘,如下f(n-1) f(n-2) f(n-3) f(n-4) * 1 1 0 0 ...
- 最小费用最大流MCMF zkw费用流
稀疏图慢死了...但是稠密图效果还是很好的 struct MCMF{ struct tedge{int x,y,cap,w,next;}adj[maxm];int ms,fch[maxn]; int ...
- 源代码管理工具TFS2013安装与使用
最近公司新开发一个项目要用微软的TFS2013进行项目的源代码管理,以前只是用过SVN,从来没有用过TFS,所以在网上百度.谷歌了好一阵子来查看怎么安装和配置,还好花了一天时间总算是初步的搞定了,下面 ...
- POJ 2718 穷举
题意:给定一组数字,如0, 1, 2, 4, 6, 7,用这些数字组成两个数,并使这两个数之差最小.求这个最小差.在这个例子上,就是204和176,差为28. 分析:首先可以想到,这两个数必定是用各一 ...
- SKView类
继承自 UIView:UIResponder:NSObject 符合 NSCoding(UIView)UIAppearance(UIView)UIAppearanceContainer(UIView) ...
- EntityFramwork6 在项目中的应用实例
在项目开发中使用的ROM大多采用EntityFramwork去完成,下边给出最新的EntityFramwork在项目中的应用实例 : 一.更新EntityFramwork 在安装.NetFramwor ...
- 去掉app右侧滑动时出现的滚动条
把plus.webview.currentWebview().setStyle({scrollIndicator:'none'});放在mui.plusReady({});内
- css08盒子模型
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8&quo ...
- spring源码测试
org.springframework.context.annotation.ComponentScanParserTests.componentScanWithAutowiredQualifier( ...
- 手机Web网站,设置拒绝电脑访问
最近一段时间,都在使用Jquery-Mobile + MVC做手机Web,有一些心得.体会 下面介绍如何拒绝电脑访问手机网站 电脑的浏览器,跟手机的浏览器内核不一样,这是我设置拒绝访问的思路. 下面是 ...