deta base error

[Mani_vbulletin3_import29014]

hi get this deta base error and my site goes offline like for 1 hour or 2 hours

Database error in vBulletin 3.8.0:

Invalid SQL:

                SELECT t_threadid,count(*) as cnt
                FROM linkback
                GROUP BY t_threadid;

MySQL Error   : Table 'main.linkback' doesn't exist
Error Number  : 1146
Request Date  : Saturday, January 31st 2009 @ 08:16:36 AM
Error Date    : Saturday, January 31st 2009 @ 08:16:36 AM
Script        : http://site.com/forum/cron.php?rand=1233411394
Referrer      : http://site.com/forum/profile.php?do=buddylist
IP Address    : 79.48.125.128
Username      : Unregistered
Classname     : vB_Database
MySQL Version :

 

[leegao]

go to your admincp, scheduled tasks, and disable the linkback checker.

 

[Mani_vbulletin3_import29014]

link back checker isnot there how to disable linkback checker

 

[dark_hunter]

Try rebuilding tables.