I tried to install MultiDB - I became a notice to chance my

I tried to install MultiDB - I became a notice to chance my wp-config.php in the way - define('WP_ALLOW_REPAIR', false); after loading the page again - the wordpress shows the notice -> WordPress can automatically look for some common database problems and repair them. Repairing can take a while, so please be patient. -> how long does I have to wait until this procedure is finished - I've waited 30 minutes, but the wordpress procedure wasn't finished?