MySQL锁表解决方案(亲测)
1,MySQL5.6版本之前的解决方案:
查询表锁定的SQL语句:
SELECT r.trx_id waiting_trx_id,
r.trx_mysql_thread_id waiting_thread,
r.trx_query waiting_query,
b.trx_id blocking_trx_id,
b.trx_mysql_thread_id blocking_thread
FROM
information_schema.innodb_lock_waits w
INNER JOIN
information_schema.innodb_trx b ON b.trx_id = w.blocking_trx_id
INNER JOIN
information_schema.innodb_trx r ON r.trx_id = w.requesting_trx_id;
示例如下图:
2,MySQL5.7版本之后的解决方案:
MySQL5.7之后对锁表做了优化,查询表锁定的SQL语句比较简单,如下:
select * from sys.innodb_lock_waits;
示例如下图:
完结!!!
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