数据库备份出错，求解决办法。

Discuz! Database Error

The database has encountered a problem. Need Help?

Error messages:

[Type] 查询语句错误 [1194] Table 'common_member_field_forum' is marked as crashed and should be repaired[Query] SELECT * FROM common_member_field_forum LIMIT 10800, 300

Program messages:

[Line: 0059]admin.php(require) [Line: 0200]sourceadmincpadmincp_db.php(sqldumptable)[Line: 1109]sourceadmincpadmincp_db.php(DB::query)