Increase MySQL max_allowed_packet

查看目前的max_allowed_packet：
SHOW VARIABLES LIKE 'max_allowed_packet'

在my.ini[mysqld]下
加上max_allowed_packet = 128M

重啟MySQL



http://dev.mysql.com/doc/refman/5.5/en/server-system-variables.html#sysvar_max_allowed_packet

http://drupal.org/node/379976