mysqldump: Couldn't execute 'show events': Cannot proceed_MySQL
mysqldump
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mysqldump: Couldn't execute 'show events': Cannot proceed because system tables used by Event Schedu解决
最近将老版本的mysql 实例倒入 percona 5.5.30，使用的是线上的全备，结果将mysql 库下的表也倒入了，这下可悲剧了，备份报错。
没办法，将mysql库下的数据倒出来，清空，再倒入percona的表结构，最后将数据重新灌进去，都不行，妥妥的要求重启。。。
没辙只能启用切换，主备从一通切＋重启才搞定。
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