今天给新加的几个数据库备份,在执行mysqldump的时候,居然报mysqldump: Got error: 1044: Access denied for user 'jpzen'@'localhost' to database 'information_schema' when using LOCK TABLES,网上一搜,觉得有可能是权限问题,马上查看mysql里操作记录,执行tail -n 40000 .mysql_history|grep