mysql研究

最新推荐文章于 2024-12-04 01:28:27 发布

转载最新推荐文章于 2024-12-04 01:28:27 发布 · 148 阅读

0 ·

CC 4.0 BY-SA版权

原文链接：https://my.oschina.net/hanruikai/blog/346792

文章标签：

#数据库 #python

2019独角兽企业重金招聘Python工程师标准>>>

mysql关键日志----慢查询日志

查看slow log位置

mysql> show variables like '%slow%'
    -> ;
+---------------------+------------------------------------------+
| Variable_name       | Value                                    |
+---------------------+------------------------------------------+
| log_slow_queries    | OFF                                      |
| slow_launch_time    | 2                                        |
| slow_query_log      | OFF                                      |
| slow_query_log_file | /user/database/mysql/PSBJ-0-0-0-slow.log |
+---------------------+------------------------------------------+
4 rows in set (0.00 sec)

开启慢查询：

mysql> set global  slow_query_log=on;
Query OK, 0 rows affected (0.00 sec)

mysql> show variables like '%slow%';
+---------------------+------------------------------------------+
| Variable_name       | Value                                    |
+---------------------+------------------------------------------+
| log_slow_queries    | ON                                       |
| slow_launch_time    | 2                                        |
| slow_query_log      | ON                                       |
| slow_query_log_file | /user/database/mysql/PSBJ-0-0-0-slow.log |
+---------------------+------------------------------------------+
4 rows in set (0.00 sec)

转载于:https://my.oschina.net/hanruikai/blog/346792