com.mysql.jdbc.PacketTooBigException: Packet for query is too large (2017898 > 1048576)
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Cause: com.mysql.jdbc.PacketTooBigException: Packet for query is too large (2017898 > 1048576). You can change this value on the server by setting the max_allowed_packet' variable.
临时方案: SET GLOBAL max_allowed_packet=16*1024*1024 root 用户临时生效 ,重启服务后将无效
彻底解决:
MySQL的一个系统参数:max_allowed_packet,其默认值为1048576(1M)
可以先查询一下:show VARIABLES like '%max_allowed_packet%';
修改此变量的值:MySQL安装目录下的my.ini文件中的[mysqld]段中的"max_allowed_packet = 1M",如更改为4M或更大(如果没有这行内容,增加一行)
保存,重新启动MySQL服务
亲测...
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