innodb database

Troubleshooting of InnoDB database deadlocks and innodb database deadlocks Scenario Description DeadlockLoserDataAccessException exception (Deadlock found when trying to get lock; try restarting transaction...) occurs during table update

Reference | Reference Manual | data | database | Chinese InnoDB chinese reference Manual---Dog dog (heart sail) Translation 3 establish a InnoDB database Suppose you have installed MySQL and have modified the MY.CNF contains the necessary InnoDB

Backup | reference | reference Manual | recovery | data | database | Chinese InnoDB Chinese Reference Manual---canine (heart sail) Translation 6 backup and restore InnoDB database Secure database management is the use of regular data

Reference | Reference Manual | data | database | Chinese InnoDB chinese reference Manual---Dog dog (heart sail) Translation 7 move InnoDB database to another machine As long as the machine's floating-point number format is consistent, the InnoDB

mysql5.7 InnoDB Database Backup tool xtrabackup installationwget mhttps://www.percona.com/downloads/xtrabackup/percona-xtrabackup-2.4.7/binary/redhat/6/x86_64/ percona-xtrabackup-24-2.4.7-1.el6.x86_64.rpmM Ysql 5.7 need to install Xtrabackup 2.4.1

Considerations for innodb database backup (solution caused by phpmyadmin) phpmyadmin BitsCN.com 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

Scenario One: (Don't change too much My.ini file) Copy the database from the original database a ib_logfile1 ib_logfile0 ibdata1; Close the destination database B; Backup destination database b ib_logfile1 ib_logfile0 ibdata1 three

Customer database in the operation of a sudden power outage, when the server restart found that MySQL could not start, view the log, error as follows:151105 11:24:52 Mysqld_safe starting mysqld daemon with databases from/data/mysql/datafile151105 11:

First of all, why do this because I work on a large Drupal project, the database files are large, and each new feature is developed on the branch, which means I need to build multiple local environments and often need to delete old branches and

Next: Architecture Design: System Storage (4)-Block storage scheme (4)1. mysql OverviewFrom the beginning of this paper, we will discuss the performance optimization scheme and cluster scheme of the relational database based on the block storage

This article mainly introduces how to release disk space after MysqlInnoDB deletes data. Innodb only marks deleted data as deleted and does not actually release the occupied disk space, this leads to the continuous growth of InnoDB database files.

According to the official recommendation of discuz, the selected Non-TransactionalDatabaseOnly only supports MyISAM. In fact, the default installation is also quite good. later, I was working on WordPress, I didn't know at first that WordPress was

The Innodb database only marks deleted data and does not actually release the occupied disk space, which leads to the increasing number of InnoDB database files. If you want to completely release the deleted data, you need to export the database,

Mysql InnoDB completely releases disk space, mysqlinnodb The Innodb database only marks deleted data and does not actually release the occupied disk space, which leads to the increasing number of InnoDB database files. To completely release the disk

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 want to completely release these deleted data, you need to export the database, delete the

MySQLStudy -- Mysql startup failure "mysql. host "system environment: Operating System: RedHatEL55DBSoft: Mysql5.6.4-m7 after mysql is installed through the source code package, an error occurs when mysqld is started: [root @ rh55mysql] #

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. Data Optimization now, Due to frequent data updates and fast data volume growth, the

  Readers who have studied database theory should still remember the Performance Comparison Between CHAR and VARCHAR: CHAR is faster than VARCHAR because CHAR is of a fixed length and VARCHAR requires a length identifier, an extra operation is

This article explains to the coders about The InnoDB type of the mysql database. The cause and solution of the deadlock occurred during table update. For more information about coders, see. Scenario description DeadlockLoserDataAccessException

In practice, some colleagues often asked: what is the appropriate number of records in the MySQL Innodb table?Generally, the larger the table, the lower the performance. But how low is it? Is it a slow decline or a sharp decline? Is it a decline of 1