search
HomeDatabaseMysql Tutorial如何解决mysql数据库8小时无连接自动关闭_MySQL

mysql自动关闭

windows下打开my.ini,增加:

  interactive_timeout=28800000

  wait_timeout=28800000

  专家解答:MySQL是一个小型关系型数据库管理系统,由于MySQL体积小、速度快、总体拥有成本低,尤其是开放源码这一特点,许多中小型网站为了降低网站总体拥有成本而选择了MySQL作为网站数据库。

  关于mysql自动关闭服务的现象,可以通过mysql服务器端程序mysql Administrator调整连接参数。将max_connections max_updates max_questions三项数据调整到很大的数字,那么你有限的操作将不会导致数据库服务的终止了在MySQL数据库中,如果一个连接8小时没有请求和操作,就会自动断开,从而导致一些基于数据库连接的应用程序,特别是 WEB 应用程序出错。解决mysql数据库自动关闭服务三个方法:

  方法一:这个参数的名称是 wait_timeout,其默认值为 28800秒(8小时)。其意义为关闭一个连接之前在这个连接上等到行动的秒数,也就是说,如果一个连接闲置超过这个选项所设置的秒数,MySQL 会主动断开这个连接。

  修改操作:

  linux下打开/etc/my.cnf,在属性组mysqld下面添加参数如下:

  interactive_timeout=28800000

  wait_timeout=28800000

  windows下打开my.ini,增加:

  interactive_timeout=28800000

  wait_timeout=28800000

  有实践表明,没有办法把这个值设置成无限大,即永久。因此如果你无法保证你的应用程序必定在设定的秒数内至少有一次操作,那么最好用第二个方法解决这个问题。

  方法二:修改如下JDBC连接的 URL:

  jdbc:mysql://hostaddress:3306/schemaname?autoReconnect=true

  添加 autoReconnect=true 这个参数,即能解决这个问题。

  方法三:配置文件(proxool.xml):

  mysql

  jdbc:mysql://localhost/yourDatebase?useUnicode=true&characterEncoding=UTF-8

  com.mysql.jdbc.Driver

  90000

  20

  3

  20

  3

  true

  true

  SELECT CURRENT_USER

  专家建议关于mysql自动关闭服务的三个方法,用户最好采取第一个办法最为彻底解决。

Statement
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
MySQL's Role: Databases in Web ApplicationsMySQL's Role: Databases in Web ApplicationsApr 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.

MySQL: Building Your First DatabaseMySQL: Building Your First DatabaseApr 17, 2025 am 12:22 AM

The steps to build a MySQL database include: 1. Create a database and table, 2. Insert data, and 3. Conduct queries. First, use the CREATEDATABASE and CREATETABLE statements to create the database and table, then use the INSERTINTO statement to insert the data, and finally use the SELECT statement to query the data.

MySQL: A Beginner-Friendly Approach to Data StorageMySQL: A Beginner-Friendly Approach to Data StorageApr 17, 2025 am 12:21 AM

MySQL is suitable for beginners because it is easy to use and powerful. 1.MySQL is a relational database, and uses SQL for CRUD operations. 2. It is simple to install and requires the root user password to be configured. 3. Use INSERT, UPDATE, DELETE, and SELECT to perform data operations. 4. ORDERBY, WHERE and JOIN can be used for complex queries. 5. Debugging requires checking the syntax and use EXPLAIN to analyze the query. 6. Optimization suggestions include using indexes, choosing the right data type and good programming habits.

Is MySQL Beginner-Friendly? Assessing the Learning CurveIs MySQL Beginner-Friendly? Assessing the Learning CurveApr 17, 2025 am 12:19 AM

MySQL is suitable for beginners because: 1) easy to install and configure, 2) rich learning resources, 3) intuitive SQL syntax, 4) powerful tool support. Nevertheless, beginners need to overcome challenges such as database design, query optimization, security management, and data backup.

Is SQL a Programming Language? Clarifying the TerminologyIs SQL a Programming Language? Clarifying the TerminologyApr 17, 2025 am 12:17 AM

Yes,SQLisaprogramminglanguagespecializedfordatamanagement.1)It'sdeclarative,focusingonwhattoachieveratherthanhow.2)SQLisessentialforquerying,inserting,updating,anddeletingdatainrelationaldatabases.3)Whileuser-friendly,itrequiresoptimizationtoavoidper

Explain the ACID properties (Atomicity, Consistency, Isolation, Durability).Explain the ACID properties (Atomicity, Consistency, Isolation, Durability).Apr 16, 2025 am 12:20 AM

ACID attributes include atomicity, consistency, isolation and durability, and are the cornerstone of database design. 1. Atomicity ensures that the transaction is either completely successful or completely failed. 2. Consistency ensures that the database remains consistent before and after a transaction. 3. Isolation ensures that transactions do not interfere with each other. 4. Persistence ensures that data is permanently saved after transaction submission.

MySQL: Database Management System vs. Programming LanguageMySQL: Database Management System vs. Programming LanguageApr 16, 2025 am 12:19 AM

MySQL is not only a database management system (DBMS) but also closely related to programming languages. 1) As a DBMS, MySQL is used to store, organize and retrieve data, and optimizing indexes can improve query performance. 2) Combining SQL with programming languages, embedded in Python, using ORM tools such as SQLAlchemy can simplify operations. 3) Performance optimization includes indexing, querying, caching, library and table division and transaction management.

MySQL: Managing Data with SQL CommandsMySQL: Managing Data with SQL CommandsApr 16, 2025 am 12:19 AM

MySQL uses SQL commands to manage data. 1. Basic commands include SELECT, INSERT, UPDATE and DELETE. 2. Advanced usage involves JOIN, subquery and aggregate functions. 3. Common errors include syntax, logic and performance issues. 4. Optimization tips include using indexes, avoiding SELECT* and using LIMIT.

See all articles

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

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Chat Commands and How to Use Them
1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.