本文介绍了在不锁定表的情况下运行 MySQLDump的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想将实时生产数据库复制到我的本地开发数据库中.有没有办法在不锁定生产数据库的情况下做到这一点?
I want to copy a live production database into my local development database. Is there a way to do this without locking the production database?
我目前正在使用:
mysqldump -u root --password=xxx -h xxx my_db1 | mysql -u root --password=xxx -h localhost my_db1
但是它会在每个表运行时锁定它.
But it's locking each table as it runs.
推荐答案
--lock-tables=false
选项是否有效?
根据手册页,如果您要转储 InnoDB 表,您可以使用 --single-transaction
选项:
According to the man page, if you are dumping InnoDB tables you can use the --single-transaction
option:
--lock-tables, -l
Lock all tables before dumping them. The tables are locked with READ
LOCAL to allow concurrent inserts in the case of MyISAM tables. For
transactional tables such as InnoDB and BDB, --single-transaction is
a much better option, because it does not need to lock the tables at
all.
对于innodb DB:
mysqldump --single-transaction=TRUE -u username -p DB
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