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

1. 錯誤描述

        錯誤關鍵字:

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

         錯誤樣例截圖:     

            從錯誤中, 我們看到是 一次插入的數據過大, 大於了設置的4M. 也提示瞭解決方案"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.  臨時更改

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

    方案2.   永久更改(擁有更高的這個權限.)

            方法一,  需直接配置文件, 並重啓MySQL服務.

                

    

            方法二: 從客戶端更改, 更改後重啓MySQL服務.