Out of resources when opening file './video_export_new/domain_categories.MYD' (Errcode: 24)

SELECT `title` as `title` ,CONCAT('/category/',`slug_he`) as `link`
FROM `categories` INNER JOIN `domain_categories` ON (`categories`.`category_id`=`domain_categories`.`category_id`)AND `domain_categories`.`domain_id`='1' ORDER BY `title`