【mysql监控】查看mysql库大小,表大小,索引大小
2015-07-06 00:04
621 查看
转自:http://blog.sina.com.cn/s/blog_4c197d420101fbl9.html
查看所有库的大小
mysql> use information_schema;
Database changed
mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES;
+----------+
| data |
+----------+
| 104.21MB |
+----------+
1 row in set (0.11 sec)
查看指定库的大小
mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES where table_schema='jishi';
+---------+
| data |
+---------+
| 26.17MB |
+---------+
1 row in set (0.01 sec)
查看指定库的指定表的大小
mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES where table_schema='jishi' and table_name='a_ya';
+--------+
| data |
+--------+
| 0.02MB |
+--------+
1 row in set (0.00 sec)
查看指定库的索引大小
mysql> SELECT CONCAT(ROUND(SUM(index_length)/(1024*1024), 2), ' MB') AS 'Total Index Size' FROM TABLES WHERE table_schema = 'jishi';
+------------------+
| Total Index Size |
+------------------+
| 0.94 MB |
+------------------+
1 row in set (0.01 sec)
查看指定库的指定表的索引大小
mysql> SELECT CONCAT(ROUND(SUM(index_length)/(1024*1024), 2), ' MB') AS 'Total Index Size' FROM TABLES WHERE table_schema = 'test' and table_name='a_yuser';
+------------------+
| Total Index Size |
+------------------+
| 21.84 MB |
+------------------+
1 row in set (0.00 sec)
mysql> show create table test.a_yuser\G;
*************************** 1. row ***************************
Table: a_yuser
Create Table: CREATE TABLE `a_yuser` (
`email` varchar(60) NOT NULL DEFAULT '',
`user_name` varchar(60) NOT NULL DEFAULT '',
KEY `cc` (`email`(5)),
KEY `ccb` (`user_name`(5)),
KEY `ccbc` (`email`(5),`user_name`(5))
) ENGINE=MyISAM DEFAULT CHARSET=utf8
1 row in set (0.00 sec)
ERROR:
No query specified
mysql> select count(*) from test.a_yuser;
+----------+
| count(*) |
+----------+
| 1073607 |
+----------+
1 row in set (0.00 sec)
mysql>
查看一个库中的情况...
mysql> SELECT CONCAT(table_schema,'.',table_name) AS 'Table Name', CONCAT(ROUND(table_rows/1000000,4),'M') AS 'Number of Rows', CONCAT(ROUND(data_length/(1024*1024*1024),4),'G') AS 'Data Size', CONCAT(ROUND(index_length/(1024*1024*1024),4),'G') AS
'Index Size', CONCAT(ROUND((data_length+index_length)/(1024*1024*1024),4),'G') AS'Total'FROM information_schema.TABLES WHERE table_schema LIKE 'test';
+---------------+----------------+-----------+------------+---------+
| Table Name | Number of Rows | Data Size | Index Size | Total |
+---------------+----------------+-----------+------------+---------+
| test.a_br | 0.4625M | 0.0259G | 0.0171G | 0.0431G |
| test.a_skuclr | 0.7099M | 0.0660G | 0.0259G | 0.0919G |
| test.a_yuser | 1.0736M | 0.0497G | 0.0213G | 0.0710G |
| test.test | 0.0000M | 0.0000G | 0.0000G | 0.0000G |
+---------------+----------------+-----------+------------+---------+
4 rows in set (0.13 sec)
查看所有库的大小
mysql> use information_schema;
Database changed
mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES;
+----------+
| data |
+----------+
| 104.21MB |
+----------+
1 row in set (0.11 sec)
查看指定库的大小
mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES where table_schema='jishi';
+---------+
| data |
+---------+
| 26.17MB |
+---------+
1 row in set (0.01 sec)
查看指定库的指定表的大小
mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES where table_schema='jishi' and table_name='a_ya';
+--------+
| data |
+--------+
| 0.02MB |
+--------+
1 row in set (0.00 sec)
查看指定库的索引大小
mysql> SELECT CONCAT(ROUND(SUM(index_length)/(1024*1024), 2), ' MB') AS 'Total Index Size' FROM TABLES WHERE table_schema = 'jishi';
+------------------+
| Total Index Size |
+------------------+
| 0.94 MB |
+------------------+
1 row in set (0.01 sec)
查看指定库的指定表的索引大小
mysql> SELECT CONCAT(ROUND(SUM(index_length)/(1024*1024), 2), ' MB') AS 'Total Index Size' FROM TABLES WHERE table_schema = 'test' and table_name='a_yuser';
+------------------+
| Total Index Size |
+------------------+
| 21.84 MB |
+------------------+
1 row in set (0.00 sec)
mysql> show create table test.a_yuser\G;
*************************** 1. row ***************************
Table: a_yuser
Create Table: CREATE TABLE `a_yuser` (
`email` varchar(60) NOT NULL DEFAULT '',
`user_name` varchar(60) NOT NULL DEFAULT '',
KEY `cc` (`email`(5)),
KEY `ccb` (`user_name`(5)),
KEY `ccbc` (`email`(5),`user_name`(5))
) ENGINE=MyISAM DEFAULT CHARSET=utf8
1 row in set (0.00 sec)
ERROR:
No query specified
mysql> select count(*) from test.a_yuser;
+----------+
| count(*) |
+----------+
| 1073607 |
+----------+
1 row in set (0.00 sec)
mysql>
查看一个库中的情况...
mysql> SELECT CONCAT(table_schema,'.',table_name) AS 'Table Name', CONCAT(ROUND(table_rows/1000000,4),'M') AS 'Number of Rows', CONCAT(ROUND(data_length/(1024*1024*1024),4),'G') AS 'Data Size', CONCAT(ROUND(index_length/(1024*1024*1024),4),'G') AS
'Index Size', CONCAT(ROUND((data_length+index_length)/(1024*1024*1024),4),'G') AS'Total'FROM information_schema.TABLES WHERE table_schema LIKE 'test';
+---------------+----------------+-----------+------------+---------+
| Table Name | Number of Rows | Data Size | Index Size | Total |
+---------------+----------------+-----------+------------+---------+
| test.a_br | 0.4625M | 0.0259G | 0.0171G | 0.0431G |
| test.a_skuclr | 0.7099M | 0.0660G | 0.0259G | 0.0919G |
| test.a_yuser | 1.0736M | 0.0497G | 0.0213G | 0.0710G |
| test.test | 0.0000M | 0.0000G | 0.0000G | 0.0000G |
+---------------+----------------+-----------+------------+---------+
4 rows in set (0.13 sec)
相关文章推荐
- cacti 中查询mysql数据库占用磁盘大小并返回的php修改了
- mysql查看当前所有数据库大小
- Windows下Mysql5.6启用监控执行脚本的日志
- 实时监控MySql状态
- 实时监控mysql数据库变化
- CentOS+nginx+Django+Postgresql web环境搭建
- golang自定义数据类型查询与插入postgresql中point数据
- 关于SQL Server监控与优化
- MySQL-Cluster架构图文详解
- SQL Server 2008 R2 安装出错:Could not open key
- PL/SQL developer配置方法
- SQL2008代理作业出现错误: c001f011维护计划创建失败的解决方法
- Oracle SQL Developer更改DATE日期的显示格式
- CRITICAL keystone [-] OperationalError: (OperationalError) (2003, "Can't connect to MySQL server on
- 关于PL/SQL Developer 中文乱码的解决
- beego框架之orm模块——PostgreSQL
- C#/Sqlite-SQLite PetaPoco django 打造桌面程序
- MySQL导入sql脚本错误:2006 - MySQL server has gone away
- beego框架之orm模块——sqlite
- SQL SERVER 2005/2008 中关于架构的理解(一)