匯入資料庫的時候 SQLyog 報錯了

Error Code: 2006 – MySQL server has gone away

搜了下，說是max_allowed_packet （MySQL的一個引數）設定的值不夠大。

那我改下就行了 嘿嘿

In Windows:

In the MySQL server installation directory,
in my.ini file, add the following line under [mysqld] in SERVER SECTION.

max_allowed_packet = 16M

In Linux:

Copy the my-xxx.cnf file from /usr/share/mysql to /etc as my.cnf

xxx can be small, medium, large, huge … depending on the requirement.

$ cp /usr/share/mysql/my-xxx.cnf /etc/my.cnf

In the my.cnf file, change the default
max_allowed_packet = 1M
to
max_allowed_packet = 16M

Save the file and restart MySQL server.

今天匯入.sql檔案時出現了Error Code: 2006 – MySQL server has gone away錯誤，原來是匯入的sql檔案大於系統預設的max_allowed_packet的值，查了很多修改配置檔案的，但是沒有找到my.cfg檔案，修改其他檔案不管用，所以直接使用sql語句來修改：

SET GLOBAL  max_allowed_packet=67108864;

這個挺好使的，改完之後不用重啟服務，直接好使了