Home Database Mysql Tutorial 为MySQL数据文件ibdata1瘦身

为MySQL数据文件ibdata1瘦身

Jun 07, 2016 pm 03:20 PM
l mysql data document lose weight Enter

欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 MySQL在运行一段时间后,ibdata1的文件会增长大小,就算删除了表的数据,ibdata1的体积也不会减

欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入

  MySQL在运行一段时间后,ibdata1的文件会增长大小,就算删除了表的数据,ibdata1的体积也不会减小。由于硬盘空间有限,这样一直膨胀下去磁盘空间接近崩溃。今天在导出数据的时候就发现了,磁盘竟然满了,明明预留了1个月的用量,1周就占满了,下面就要给ibdata1做个瘦身。

  1. 系统环境

  Linux Ubuntu 13.04 64bit server

  ~ uname -a

  Linux d2 3.8.0-21-generic #32-Ubuntu SMP Tue May 14 22:16:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

  ~ cat /etc/issue

  Ubuntu 13.04 \n \l

  MySQL: 5.5.31-0ubuntu0.13.04.1

  ~ mysql --version

  mysql  Ver 14.14 Distrib 5.5.31, for debian-linux-gnu (x86_64) using readline 6.2

  硬盘:36G+4G+4G+36G

  ~ df -h

  Filesystem                    Size  Used Avail Use% Mounted on

  /dev/mapper/server3--vg-root   36G   31G  3.2G  91% /

  none                          4.0K     0  4.0K   0% /sys/fs/cgroup

  udev                          4.1G  1.1G  3.0G  26% /dev

  tmpfs                         824M  280K  823M   1% /run

  none                          5.0M     0  5.0M   0% /run/lock

  none                          4.1G  3.4G  729M  83% /run/shm

  none                          100M     0  100M   0% /run/user

  /dev/vda1                     228M   30M  187M  14% /boot

  192.168.1.10:/home/amg/data    36G   13G   21G  39% /home/amg/data

  MySQL的ibdata1占用空间:20G

  ~ cd /var/lib/mysql

  ~ ls -l

  drwxr-xr-x 2 mysql mysql        4096 Aug  2 19:38 CB

  drwxr-xr-x 2 mysql mysql        4096 Jun 24 23:08 conan

  drwxr-xr-x 2 mysql mysql        4096 Jun  2 00:52 dbwordpress

  -rwxr-xr-x 1 root  root            0 May 23 00:48 debian-5.5.flag

  -rwxr-xr-x 1 mysql mysql 20101201920 Aug  2 20:08 ibdata1

  -rwxr-xr-x 1 mysql mysql     5242880 Aug  2 20:08 ib_logfile0

  -rwxr-xr-x 1 mysql mysql     5242880 Aug  2 19:38 ib_logfile1

  drwxr-xr-x 2 mysql mysql        4096 Jun 26 09:03 Macro

  drwxr-xr-x 2 mysql root         4096 May 23 00:48 mysql

  -rwxr-xr-x 1 root  root            6 May 23 00:48 mysql_upgrade_info

  drwxr-xr-x 2 mysql mysql        4096 May 23 00:48 performance_schema

  drwxr-xr-x 2 mysql mysql        4096 May 23 00:53 phpmyadmin

  drwxr-xr-x 2 mysql root         4096 May 23 00:48 test

  drwxr-xr-x 2 mysql mysql        4096 Jul 22 14:09 TF

  drwxr-xr-x 2 mysql mysql        4096 Jun  2 01:04 wordpress

  业务数据表

  mysql> show tables;

  +-----------------+

  | Tables_in_CB    |

  +-----------------+

  | NSpremium       |

  | cb_hft          |

  | cb_hft_20130801 |

  | cb_hft_20130802 |

  +-----------------+

  4 rows in set (0.00 sec)

  2. 发现问题

  ibdata1单个文件占用20G大小。

  1. MySQL默认设置,没有按表空间分离数据,所有的表的数据都被放到ibdata1文件中。

  2. 业务操作,每天会产生一张表cb_hft,晚上的时候对表进行重命名。

  RENAME TABLE cb_hft TO cb_hft_20130801;

  create table cb_hft like cb_hft_20130801;

[1] [2] [3] 

为MySQL数据文件ibdata1瘦身

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

MySQL's Role: Databases in Web Applications MySQL's Role: Databases in Web Applications Apr 17, 2025 am 12:23 AM

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

Laravel Introduction Example Laravel Introduction Example Apr 18, 2025 pm 12:45 PM

Laravel is a PHP framework for easy building of web applications. It provides a range of powerful features including: Installation: Install the Laravel CLI globally with Composer and create applications in the project directory. Routing: Define the relationship between the URL and the handler in routes/web.php. View: Create a view in resources/views to render the application's interface. Database Integration: Provides out-of-the-box integration with databases such as MySQL and uses migration to create and modify tables. Model and Controller: The model represents the database entity and the controller processes HTTP requests.

How to start mysql by docker How to start mysql by docker Apr 15, 2025 pm 12:09 PM

The process of starting MySQL in Docker consists of the following steps: Pull the MySQL image to create and start the container, set the root user password, and map the port verification connection Create the database and the user grants all permissions to the database

Solve database connection problem: a practical case of using minii/db library Solve database connection problem: a practical case of using minii/db library Apr 18, 2025 am 07:09 AM

I encountered a tricky problem when developing a small application: the need to quickly integrate a lightweight database operation library. After trying multiple libraries, I found that they either have too much functionality or are not very compatible. Eventually, I found minii/db, a simplified version based on Yii2 that solved my problem perfectly.

How to install mysql in centos7 How to install mysql in centos7 Apr 14, 2025 pm 08:30 PM

The key to installing MySQL elegantly is to add the official MySQL repository. The specific steps are as follows: Download the MySQL official GPG key to prevent phishing attacks. Add MySQL repository file: rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm Update yum repository cache: yum update installation MySQL: yum install mysql-server startup MySQL service: systemctl start mysqld set up booting

Centos install mysql Centos install mysql Apr 14, 2025 pm 08:09 PM

Installing MySQL on CentOS involves the following steps: Adding the appropriate MySQL yum source. Execute the yum install mysql-server command to install the MySQL server. Use the mysql_secure_installation command to make security settings, such as setting the root user password. Customize the MySQL configuration file as needed. Tune MySQL parameters and optimize databases for performance.

Laravel framework installation method Laravel framework installation method Apr 18, 2025 pm 12:54 PM

Article summary: This article provides detailed step-by-step instructions to guide readers on how to easily install the Laravel framework. Laravel is a powerful PHP framework that speeds up the development process of web applications. This tutorial covers the installation process from system requirements to configuring databases and setting up routing. By following these steps, readers can quickly and efficiently lay a solid foundation for their Laravel project.

MySQL and phpMyAdmin: Core Features and Functions MySQL and phpMyAdmin: Core Features and Functions Apr 22, 2025 am 12:12 AM

MySQL and phpMyAdmin are powerful database management tools. 1) MySQL is used to create databases and tables, and to execute DML and SQL queries. 2) phpMyAdmin provides an intuitive interface for database management, table structure management, data operations and user permission management.

See all articles