database error in my site!
 

Hello,
i have a database error in my forum , please help

Database error in vBulletin 4.1.2:

Invalid SQL:
INSERT INTO searchcore_text (searchcoreid, title, keywordtext)
VALUES ( 89, 'صندلي داغ', '' )
ON DUPLICATE KEY UPDATE searchcoreid = VALUES(searchcoreid), title = VALUES(title), keywordtext = VALUES(keywordtext);

MySQL Error : Table './vbu/searchcore_text' is marked as crashed and should be repaired
Error Number : 145
Request Date : Sunday, July 31st 2011 @ 05:49:32 AM
Error Date : Sunday, July 31st 2011 @ 05:49:34 AM
Script : http://www.a.com/newreply.php?do=postreply&t=87699
Referrer : http://www.a.com/newreply.php?do=newreply&p=615576
IP Address : 85.133.199.31
Username : ADMIN
Classname : vB_Database
MySQL Version : 5.1.57

repair and optimize tables in phpmyadmin