获取“超出锁定等待超时；尝试重新启动事务&

问题描述

我正在运行以下 MySQL UPDATE 语句:

I'm running the following MySQL UPDATE statement:

mysql> update customer set account_import_id = 1;
ERROR 1205 (HY000): Lock wait timeout exceeded; try restarting transaction

我没有使用事务，为什么会出现此错误?我什至尝试重新启动我的 MySQL 服务器，但没有帮助.

I'm not using a transaction, so why would I be getting this error? I even tried restarting my MySQL server and it didn't help.

该表有 406,733 行.

The table has 406,733 rows.

推荐答案

您正在使用事务；autocommit 不会禁用事务，它只是让它们在语句结束时自动提交.

You are using a transaction; autocommit does not disable transactions, it just makes them automatically commit at the end of the statement.

发生的情况是，某个其他线程在某条记录上持有记录锁(您正在更新表中的每条记录！)太长时间了，并且您的线程超时了.

What is happening is, some other thread is holding a record lock on some record (you're updating every record in the table!) for too long, and your thread is being timed out.

您可以通过发布一个查看更多活动详情

You can see more details of the event by issuing a

SHOW ENGINE INNODB STATUS

在事件之后(在 SQL 编辑器中).理想情况下，在安静的测试机器上执行此操作.

after the event (in SQL editor). Ideally do this on a quiet test-machine.

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