MySQL错误 ERROR 2006 (HY000): MySQL server has gone away

时间 2019-12-05

标签 mysql 错误 error hy000 server gone away 栏目 MySQL 繁體版

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MySQL下当我导入一个比较大的SQL文件时出现了ERROR 2006 (HY000): MySQL server has gone away错误，具体状况以下：html

>  ll *.sql
-rwxr-xr-x@ 1 bohan  staff    27M Mar 26 18:08 91620_all.sql

> mysql test < 91620_all.sql
ERROR 2006 (HY000) at line 17128: MySQL server has gone away

上面能够看到，文件大小为27M导入的时候会报这个错误。mysql

错误缘由

If you are using the mysql client program, its default max_allowed_packet variable is 16MB. To set a larger value, start mysql like this:sql

shell> mysql --max_allowed_packet=32M

That sets the packet size to 32MB.shell

咱们经过MySQL相关文档能够发现默认大小是16M。ssh

解决方法

全部大于16M的SQL文件都会报这个错误，咱们能够直接经过命令后增长--max_allowed_packet=32M解决this

或者登陆MySQL客户端，修改系统变量：code

> ssh mysql
mysql> set GLOBAL max_allowed_packet=32*1024*1024;

咱们也能够经过修改MySQL配置my.cnf文件，在最后一行增长max_allowed_packet=32M就能够了server

MySQL配置文件的位置：htm

Windows下 C:\ProgamData\MySQL\MySQL Server5.6
Linux下 /etc/mysql
Mac下经过brew安装 /usr/local/Cellar/mysql/5.6.23