Database error in vBulletin 4.1.3 cách khắc phục

[vanminh]

Database error in vBulletin 4.1.3:

Invalid SQL:

UPDATE datastore SET
data = data - 1,
data = IF(data < 0, 0, data)
WHERE title = 'mailqueue';

MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Saturday, June 11th 2011 @ 04:30:35 PM
Error Date : Saturday, June 11th 2011 @ 04:31:14 PM
Script : http://truongminhkhai-phutan.com/forum/forum.php
Referrer : http://truongminhkhai-phutan.com/forum/register.php?do=addmember
IP Address : 115.74.23.205
Username : hackeryou
Classname : vB_Database
MySQL Version :

[Dunglx]

Qua đây đi anh anh nhớ đọc kĩ nhé
http://itvnn.net/showthread.php?20906-hỏi-cách-sửa-lỗi-database/page3

https://www.vbulletin.com/forum/showthread.php/48697-Error-2013-but-server-up-for-6-days?s=&postid=310265#post310265
(http://itvnn.net/showthread.php?20906-hỏi-cách-sửa-lỗi-database/page3)