mysql报错：Cause: com.mysql.jdbc.PacketTooBigException

启动Mysql报错：Another MySQL daemon already running with the same unix socket.

启动Mysql报错: Another MySQL daemon already running with the same unix socket. 删除如下文件即可解决 /var/lib/mysql/mysql.sock 如果还有/var/lib/mysql/mysql1.sock,/var/lib/mysql/mysql22.sock,则一并删除.…

springboot连接mysql报错：com.mysql.jdbc.exceptions.jdbc4.CommunicationsException

nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLNonTransientConnectio…

Linux 登录 MySQL 报错, 解决bash: mysql: command not found 的方法

原因:这是由于系统默认会查找/usr/bin下的命令,如果这个命令不在这个目录下,当然会找不到命令,我们需要做的就是映射一个链接到/usr/bin目录下,相当于建立一个链接文件. 首先得知道mysql命令或mysqladmin命令的完整路径,比如mysql的路径是:/usr/local/mysql/bin/mysql,我们则可以这样执行命令: ln -s /usr/local/mysql/bin/mysql /usr/bin…

Linux环境下mysql报错：bash: mysql: command not found 的解决方法

# mysql -u root-bash: mysql: command not found 原因:这是由于系统默认会查找/usr/bin下的命令. 如果这个命令不在这个目录下,当然会找不到命令. 我们需要做的就是映射一个链接到/usr/bin目录下,相当于建立一个链接文件. # ln -s /usr/local/mysql/bin/mysql /usr/bin…

ImportError: No module named mysql 报错python引用mysql报错

需要安装 pip2.7 install MySQL-python pip2.7 install mysql-connector…

MySQL报错解决：The MySQL server is running with the --read-only option so it cannot execute this statement

MySQL报错:The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement等问题 1.登录的mysql:mysql –u root –p mysql> set global read_only=0;(关掉新主库的只读属性) flush privileges; 2.修改mysql配置文件my.cnf,该文件在/etc目录下重启mysql服务:service…

java项目连接jdbc报错：com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server

java项目连接jdbc报错:com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server 原因:相关jar包版本太低解决方法:下载最新版的mysql-connector-java即可…

Java连接数据库报错：com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

解决方案连接Mysql报错 The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. 检查mysql服务是否开启…

使用Mybatis连接到Mysql报错，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 esta

在Eclipse中使用springboot整合Mybatis,连接到5.7版本Mysql报错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 established by default if ex…

mysql报错this is incompatible with sql_mode=only_full_group_by

1.报错信息 com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: In aggregated query without GROUP BY, expression #2 of SELECT list contains nonaggregated column 'd.total_rated_power_transformer'; this is incompatible with sql_mode=only_full_group_b…

MySQL 报错：Translating SQLException with SQL state '42000', error code '1064', message

MySQL报错详细日志 2019-09-12 16:42:29 [http-nio-80-exec-25] DEBUG [org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator:399] - Translating SQLException with SQL state '42000', error code '1064', message [You have an error in your SQL syntax;…

mysql启动报错：Starting MySQL...The server quit without updating PID file

在mysql的data目录下误删除了mysql-bin.000001,mysql-bin.000002等文件,但是没有删除mysql-bin.index文件,此时启动mysql就会报错: Starting MySQL...The server quit without updating PID file (/alidata/server/mysql/data/iZ28f2w1yzyZ.pid). 解决方法:删除data目录下的mysql-bin.index文件,即可启动mysql,同时还会再自动…

PHP连接MySQL报错：SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket 'MySQL' (2)

如下所示,PHP连接MySQL报错: SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket 'MySQL' (2) 测试代码如下: <?php try { $dsn = 'mysql:dbname=php-note;host=localhost;port=3306;charset=utf8'; $username = 'root'; $password = 'root'; new PDO( $dsn,…

又一种Mysql报错注入

from:https://rdot.org/forum/showthread.php?t=3167 原文是俄文,所以只能大概的翻译一下这个报错注入主要基于Mysql的数据类型溢出(不适用于老版本的Mysql) mysql ; ERROR (): BIGINT UNSIGNED value is out of range in '(18446744073709551610 * 2)' mysql ; ERROR (): BIGINT UNSIGNED value is out of range…

Asp.Net连接Mysql报错Out of sync with server

Asp.Net连接Mysql报错Out of sync with server 原因:程序引用的MySql.Data.dll版本高于服务器版本解决:下载一个低版本的MySql.Data.dll,项目重新引用…

Linux系统下启动MySQL报错：Neither host 'localhost.localdomain' nor 'localhost' could be looked up with

Linux系统下启动MySQL报错:Neither host 'localhost.localdomain' nor 'localhost' could be looked up with 摘要 Linux系统下安装完MySQL,启动MySQL报错:Neither host 'localhost.localdomain' nor 'localhost' could be looked up with... Linux系统下装完MySQL,然后重新启动动时报错: 解决方法: 查看cat /etc…

MYSQL导入数据报错|MYSQL导入超大文件报错|MYSQL导入大数据库报错：2006 - MySQL server has gone away

导SQL数据库结构+数据时,如果数据是批量插入的话会报错:2006 - MySQL server has gone away. 解决办法:找到你的mysql目录下的my.ini配置文件(如果安装目录没有my.ini文件,那么你应该可以看见一个my-default.ini文件,那就直接拷贝一份然后修改名字为my.ini),加入以下代码 max_allowed_packet=500M wait_timeout=288000 interactive_timeout = 288000 自己看情况更改数值…

Mysql报错注入原理分析(count()、rand()、group by)

Mysql报错注入原理分析(count().rand().group by) 0x00 疑问一直在用mysql数据库报错注入方法,但为何会报错? 百度谷歌知乎了一番,发现大家都是把官网的结论发一下截图,然后执行sql语句证明一下结论,但是没有人去深入研究为什么rand不能和order by一起使用,也没彻底说明三者同时使用报错的原理. 0x01 位置问题? select count(*),(floor(rand(0)*2))x from information_schema.tables gr…

解决：MySQL 报错：1045 - Access denied for user 'root'@'localhost'(using password YES)

一.前言今年疯狂迷上了开源,只要看到好的开源项目,就会不顾一切一股脑扎进去研究,五一期间发现一个很好的关于众筹的开源项目,但不巧,这个项目竟然是 PHP 写的,没学过 PHP,自然对这个开源项目毫无头绪了,但我竟然为了这个项目,毅然决定入坑 PHP,于是就出事了... 说时迟那时快, 2 小时入门 PHP,2 小时入门 ThinkPHP,鉴于我一直在研究 Java 的原因,所以不费吹灰之力就顺利入坑.通过了解,PHP 开发必备环境是 PHP.Apache.MySQL以及一个好用的 IDE ,I…

开启bin-log日志mysql报错:This function has none of DETERMINISTIC, NO SQL解决办法

开启bin-log日志mysql报错:This function has none of DETERMINISTIC, NO SQL解决办法: 创建存储过程时出错信息: ERROR 1418 (HY000): This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you *might* want to use the…

Navicat连接Mysql报错：Client does not support authentication protocol requested by server；

Navicat连接Mysql报错:Client does not support authentication protocol requested by server: 刚安装Mysql,想用Navicat去连接,然后就报错了,此处记录报错解决. Navicat连接MySQL Server8.0版本时出现Client does not support authentication protocol requested by server:解决如下: 命令如下: 1.use mysql; 2.…

xtrabackup备份MySQL报错：InnoDB: Error number 24 means 'Too many open files'

xtrabackup备份MySQL报错:InnoDB: Error number 24 means 'Too many open files' 1.使用xtrabackup备份MySQL时出现如下报错: :: >> log scanned up to () xtrabackup: Generating a list of tablespaces InnoDB: Allocated tablespace ID InnoDB: Operating system error number in a…

MySQL报错ERROR 1558 (HY000): Column count of mysql.user is wrong.

MySQL报错ERROR 1558 (HY000): Column count of mysql.user is wrong. 1.今天在使用MySQL创建数据库时出现如下报错: mysql> CREATE USER '; ERROR (HY000): Column count of mysql.user , found . Created with MySQL , now running . Please use mysql_upgrade to fix this error. 2.解决方法…

写入MySQL报错超出 max_allowed_packet 的问题

写入MySQL报错超出 max_allowed_packet 的问题. MySQL会根据配置文件会限制server接受的数据包的大小.如果写入大数据时,因为默认的配置太小,插入和更新操作会因为 max_allowed_packet 参数限制,而导致失败. 查看当前配置: mysql> show variables like 'max_allowed_packet';+--------------------+---------+| Variable_name | Value |+-…

解决MySQL报错ERROR 2002 (HY000)【转】

今天在为新的业务线搭架数据库后,在启动的时候报错 root@qsbilldatahis-db01:/usr/local/mysql/bin# ./mysql ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) 在此记录一下,希望能够给遇到此问题的兄弟们提供一个解决问题的思路,有了思路后一步一步排查问题就比较容易了,但是我这个问题比较奇怪,如…

MySQL报错： Character set ‘utf8mb4‘ is not a compiled character set and is not specified in the ‘/usr/share/mysql/charsets/Index.xml‘ file

由于日常程序使用了字符集utf8mb4,为了避免每次更新时,set names utf8mb4,就把配置文件改了,如下: [root@~]# vim /etc/my.cnf #my.cnf [client] port = 3306 socket = /home/mysql/mysql.sock default-character-set=utf8mb4 重启MySQL服务,进入mysql时,就报错: [root@~]# mysql Logging to file ‘/home/mysql/que…