MySQL 错误. Packet for query is too large (*** 4194304). You can change......

错误描述

错误关键字:

Packetfor query is too large (***> 4194304). You can change this value on theserver by setting the max_allowed_packet' variable.

错误样例截图:

从错误中, 我们看到是一次插入的数据过大, 大于了设置的4M. 也提示了解决方案"Youcan change this value on the server by setting the max_allowed_packet'variable."

2. 查看max_allowed_packet值的方法

show VARIABLES like'%max_allowed_packet%';

3. 更改方法,

方案 1. 临时更改

set global max_allowed_packet =2*1024*1024*10;
show VARIABLES like'%max_allowed_packet%';

方案2. 永久更改(拥有更高的这个权限.)

方法一, 需直接配置文件, 并重启MySQL服务.

方法二: 从客户端更改, 更改后重启MySQL服务.

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