一,設置允許最大數據包
1,mysql> set global max_allowed_packet=30*1024*1024;
2,vi /etc/my.cnf
[mysqld]
max_allowed_packet = 24M
保存,重啓mysql
二,取消mysql反向解析
在/etc/my.cnf文件中添加:
[mysqld]
skip-name-resolve
重啓mysql服務即可
三,鎖表,解鎖
鎖主表 flush tables with read lock;
解鎖 unlock tables;