UPDATE `wp_posts` SET `comment_status` = 'closed', `ping_status` = 'closed';
UPDATE `wp_options` SET `option_value` = 'closed' WHERE `option_name` = 'default_comment_status';
UPDATE `wp_options` SET `option_value` = 'closed' WHERE `option_name` = 'default_ping_status';
UPDATE `wp_options` SET `option_value` = '0' WHERE `option_name` = 'users_can_register';
RENAME TABLE wp_comments To wp_comments_spam;