mysql慢查询,死锁解决方案

时间:2023-02-17 12:22:14

1. 先使用root用户登录到MySQL中

2. 使用show processlist查看其查询速率

+----+------+-----------------+------+---------+-------+-------+------------------+
| Id | User | Host | db | Command | Time | State | Info |
+----+------+-----------------+------+---------+-------+-------+------------------+
| 5 | root | localhost:54309 | emms | Sleep | 35542 | | NULL |
| 7 | root | localhost:54777 | emms | Sleep | 31952 | | NULL |
| 8 | root | localhost:54778 | emms | Sleep | 33697 | | NULL |
| 15 | root | localhost | NULL | Query | 0 | init | show processlist |
+----+------+-----------------+------+---------+-------+-------+------------------+
4 rows in set (0.00 sec)

3.如果在command中出现了select xxx from 则说明该条语句可能卡死在那里了。

找到其id

4. 将使用kill命令进行清除

kill {id};

> 如果是有其他的例如插入等操作,可能会导致脏数据产生,建议进行清理