innodb database

The InnoDB database is marked as deleted and does not really release the disk space it occupies, which results in a growing InnoDB database file. If you set up innodb_file_per_table=1 when you create the database, InnoDB creates a data file for

Because the default mysql engine is innodb, no engine is specified when phpmyadmin creates a table, that is, the default innodb is used. this engine is connected to ibdata1, ib_logfile0, and ib_logfile1 In the mysql/data/directory. These three files

For most applications, access to hotspot data exists, that is, the Access Frequency of some data in a certain period of time is much higher than that of other data.Common hot data includes "the latest news", "the most popular news", and "movies with

Summary: due to frequent data updates and fast data volume growth, the machine disk cannot keep up with the pace. The database shard and migration history database are used. Currently, data is optimized to reduce disk space occupied by data and save

For most applications, access to hotspot data exists, namely:The Access Frequency of some data in a certain period of time is much higher than that of other data..Common hot data includes "the latest news", "the most popular news", and "movies with

12345678910111213141516171819202122 //Connect to database$host=' localhost '; $user=' Mysql_username '; //Manage account $passwd=' Mysql_password '; //password $db=' Wordpressdb '; //Database name $link=

-- Add users and groups [root @ zlmlocal] groupadd [root @ zlmlocal] useradd-gmysql-ssbinnologin-doptmsyqlmysql -- create a directory [root @ zlmlocal] mkdirdatamysqlmysql_3306 {data, l -- Add users and groups[Root @ zlm local] # groupadd [Root @

MySQL's database files can be copied directly, but that refers to the "MyISAM" type of table.Instead of using Mysql-front to create a table directly, the default is the "InnoDB" type, a table that corresponds to only one "*.frm" file on disk, unlike

Xtrabackup Execution Process Perform operations on the database during full backupHttps://www.cnblogs.com/digdeep/p/4946230.html We can see that xtrabackup has two threads in total for full backup. Set session lock_wait_timeout =

Scene description A deadlockloserdataaccessexception exception appears when the Update table (deadlock found when trying to get lock; try restarting transaction ...). Problem analysis This exception does not affect user use because the database

The xtrabackup in Percona is really a good tool to simply introduce his features: 1, create hot backup (mainly rely on InnoDB crash recovery function) 2. Incremental backup 3, directly to the backup file compression package 4. Small load The

Scenario DescriptionAn deadlockloserdataaccessexception exception occurred in the Update table (Deadlock found when trying to get lock; try restarting transaction ...).Problem analysisThis exception does not affect the user's use, because the

MySql-centos installation configuration (reprinted) CentOS This article from: http://www.bitsCN.com/database/201305/208114.html Thanks for the author. if there is any programs with copyright please leave message in my blog, I will deall with

I suddenly received an alarm from MySQL. I crashed from the database and restarted continuously. I opened the error log and found that a table was broken. If the innodb table is damaged, you cannot use commands such as repairtable to repair myisam.

The MySQL service cannot be started. an error is reported, indicating that the 1067 process was terminated unexpectedly. bitsCN.com Problem Description: my. ini file configuration in my mysql: [Csharp] # Path to installation directory. all paths

Installing a database in Linux causes a lot of trouble. The following is one of the troubles: After the innodb database engine is installed, find a lot of information, which is roughly as follows: 1. Go Installing a database in Linux causes a lot of

Reference Manual | Chinese InnoDB chinese reference Manual---Dog dog (heart Sail) Translation 2 InnoDB startup options In order to use the InnoDB table in mysql-max-3.23, you must specify the configuration parameters in the [mysqld] section of the

Reference | Reference Manual | Chinese InnoDB chinese Reference Manual---canine (heart-sail) translator InnoDB home InnoDB Engine in mysql-max-3.23.56/mysql-4.0.12 The up-to-date Reference Manual of InnoDB Updated April, 2003:added notes to section

I suddenly received an alarm from MySQL. I crashed from the database and restarted continuously. I opened the error log and found that a table was broken. If the innodb table is damaged, you cannot use repair table or other commands to repair myisam.

An unexpected server power failure occurs. after the server is restarted, mysql cannot be started. & quot; [root @ cacti ~] # Servicemysqldrestart stop mysqld: [OK] MySQLDaemonfailedtostart. starting mysqld: [failed] & quot; View Log: & quot; [root @