[root@iZ2ze503xw2q1fftv5rhboZ mysql_bak]# /usr/local/mysql/bin/mysqldump -uroot -pmyServerPwd# dateabase > /data/mysql_bak/bak_test.sql

    mysqldump: Got error: : The user specified as a definer (‘fk_system’@’localhost’) does not exist when using LOCK TABLES

    grant select,insert,update,delete on mchome.* to ‘fk_system’@’localhost’ identified by ‘fk_system’;