When restoring a backup, a mysql error occurs. How to recover?

Question

1C-Bitrix

Error when restoring database from backup

"Ошибка восстановления базы данных	 	
MySQL query error!
MySQL server has gone away
INSERT INTO `str_` VALUES ... кракозябры"

Parameter $DB->Query("SET wait_timeout=28800");in after_connect is set
What else can be done?

Answer 1

It also writes to you "MySQL server has gone away" - the MySQL server has gone for a walk and is unavailable. Install/start the database server.