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Search found 592 results on 24 pages for 'innodb'.

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• MySQL se tourne encore plus vers InnoDB, qui sera utilisé pour les tables systèmes pour bénéficier des propriétés ACID

  MySQL se tourne encore plus vers InnoDB qui sera utilisé pour les tables systèmes pour bénéficier des propriétés ACID Depuis le rachat de MySQL par Oracle, le célèbre SGBD a entamé une lente transition de son moteur de base de données, passant du moteur d'origine MyISAM qui est basé sur la méthode ISAM (Indexed Sequential Access Methode) à InnoDB.…

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• Lots of mysql Sleep processes

  - by user259284

  Hello, I am still having trouble with my mysql server. It seems that since i optimize it, the tables were growing and now sometimes is very slow again. I have no idea of how to optimize more. mySQL server has 48GB of RAM and mysqld is using about 8, most of the tables are innoDB. Site has about 2000 users online. I also run explain on every…

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• Database Memory :: MySql Innodb how much storage memory allocation for empty field vs not empty fie

  - by Yosef

  Hi, I new in database, and dont know how and when mysql allocate memory space. In MySql Innodb how much storage memory allocation for empty field (no string inserted) vs not empty field? Other form of my question: When memory allocated space In MySql Innodb for varchar/text field in time of table creation or when data inserted inside…

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• MySQL InnoDB insertion is very slow

  - by dharmapurikar

  We use MySQL server 5.1.43 64-bit edition. InnoDB is used as engine. We have a sql script which we execute every time we build the application. On ubuntu machine with MySQL server and InnoDB engine it takes about 55 seconds to complete the execution. If I run the same script on OSX, it takes close to 3 minutes! Any ideas why OSX is so…

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• Creation time of Innodb tables

  - by shantanuo

  CRETAE_TIME column of "TABLES" table from INFORMATION_SCHEMA shows the same CREATE_TIME for all my innodb tables. It means all these tables were created between 2010-03-26 06:52:00 and 2010-03-26 06:53:00 while actually they were created a few months ago. Does the CREATE_TABLE field change automatically for Innodb tables?

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• Optimal way to make MySQL backups for fairly large databases (MyISAM / InnoDB)

  - by WinkyWolly

  Currently we have one beefy MySQL database that runs a couple of high traffic Django based websites as well as some e-commerce websites of decent size. As a result we have a fair amount of large databases using both InnoDB and MyISAM tables. Unfortunately we've recently hit a wall due to the amount of traffic so I've setup another master…

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• How to improve INSERT INTO ... SELECT locking behavior

  - by Artem

  In our production database, we ran the following pseudo-code SQL batch query running every hour: INSERT INTO TemporaryTable (SELECT FROM HighlyContentiousTableInInnoDb WHERE allKindsOfComplexConditions are true) Now this query itself does not need to be fast, but I noticed it was locking up HighlyContentiousTableInInnoDb, even though it…

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• Problems getting foreign keys working in MySQL

  - by thehuby

  I've been trying to get a delete to cascade and it just doesn't seem to work. I'm sure I am missing something obvious, can anyone help me find it? I would expect a delete on the 'articles' table to trigger a delete on the corresponding rows in the 'article_section_lt' table. CREATE TABLE articles ( id INTEGER UNSIGNED PRIMARY KEY…

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• MySQL features I can rely on being available

  - by xrstf

  So I'm developing a PHP/MySQL based CMS which requires PHP 5.1 and MySQL 5.0 (with InnoDB support) at least. I'm now wondering what features of MySQL I can safely use without noticing one day that "Oh, well, that crappy hoster has disabled feature X, damn, now I'm screwed." So my question is, which of these features can become…

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• Server Recovery from Denial of Service

  - by JMC

  I'm looking at a server that might be misconfigured to handle Denial of Service. The database was knocked offline after the attack, and was unable to restart itself after it failed to restart when the attack subsided. Details of the Attack: The Attacker either intentionally or unintentionally sent 1000's of search queries…

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• Mysql InnoDB and quickly applying large updates

  - by Tim

  Basically my problem is that I have a large table of about 17,000,000 products that I need to apply a bunch of updates to really quickly. The table has 30 columns with the id set as int(10) AUTO_INCREMENT. I have another table which all of the updates for this table are stored in, these updates have to be pre-calculated…

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• MySQL 5.5.9 Query Cache not working.

  - by thepearson

  I am running MySQL 5.5.9 x86_64 RPM as downloaded from mysql.com. Running on CentOS 5.5 Xen DomU. I have enabled the Query_cache however MySQL NEVER uses it. All of my tables are InnoDB. Why is the Qcache never hit? Here are my settings. mysql> SELECT VERSION(); +-----------+ | VERSION() | +-----------+ | 5.5.9 …

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• Should I upgrade memory for my dedicated server?

  - by mc1000

  My memory usage hangs around 25% (swap is generally 1%) on my dedicated server and load is around 2-5. My host recommended that I upgrade from 2GB of ram to 4GB so that I can increase my innodb_buffer from the default 16MB to 2GB. My innodb table size is 2GB. My question is, given that ram usage is 25% does it make…

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• MySQL: Creating table with FK error (errno 150)

  - by Peter Bailey

  I've tried searching on this error and nothing I've found helps me, so I apologize in advance if this is a duplicate and I'm just too dumb to find it. I've created a model with MySQL Workbench and am now attempting to install it to a mysql server. Using File Export Forward Engineer SQL CREATE Script... it outputs…

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• Regular issue with keys on temp tables

  - by Christian

  We run a large forum with lots of reads and writes, particularly to the posts and topics tables which are both innodb. Last week I started doing 12 hourly backups with innobackupex because mysqldump just takes forever (7+ million rows in posts table.) It seems that something doesn't like these backups because I…

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• Optimizing MySQL for ALTER TABLE of InnoDB

  - by schuilr

  Sometime soon we will need to make schema changes to our production database. We need to minimize downtime for this effort, however, the ALTER TABLE statements are going to run for quite a while. Our largest tables have 150 million records, largest table file is 50G. All tables are InnoDB, and it was set up as…

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• mysql foreign key problem.

  - by JP19

  Hi, What is wrong with the foreign key addition here: mysql> create table notes ( id int (11) NOT NULL auto_increment PRIMARY KEY, note_type_id smallint(5) NOT NULL, data TEXT NOT NULL, created_date datetime NOT NULL, modified_date timestamp NOT NULL on update now()) Engine=InnoDB; Query OK, 0 rows…

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• How to recover a MySQL InnoDB table?

  - by Kau-Boy

  When I try to launch the Plesk administration page of you server I get the following error: ERROR: PleskMainDBException MySQL query failed: MySQL server has gone away The MySQL Server is working well. Although it seems that the plesk database is somehow corrupt and any action on this database results…

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• Mysqld shutting down by itself

  - by AJ Naidas

  I'm running a Wordpress Blog that gets medium-high traffic. It is hosted in an Ubuntu Server 2GB Memory 2 Core Processor 40GB SSD Disk, 3TB Transfer. The problem is that MySQL shuts down by itself after an hour or two. I had to restart mysql each and every time this happens. I checked the logs and…

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• cause for mysql crash

  - by user1322092

  A cron job automatically restarted my mysql database. What's the cause for the crash, or can you suggest how to resolve or monitor. I would REALLY appreciate your input. 120715 14:38:58 mysqld started 120715 14:38:58 InnoDB: Started; log sequence number 0 411137570 120715 14:38:58 [Note]…

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• Setting up Eloquent relationships in Laravel for existing InnoDB relationships

  - by adam

  I have an initial migration that sets up two tables (users and projects), with a relationship (innoDB). $table->foreign('user_id')->references('id')->on('users'); I have two Eloquent models set up, blank except for the relationship: return $this->has_many('Project'); Do i…

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• Online ALTER TABLE in MySQL 5.6

  - by Marko Mäkelä

  This is the low-level view of data dictionary language (DDL) operations in the InnoDB storage engine in MySQL 5.6. John Russell gave a more high-level view in his blog post April 2012 Labs Release – Online DDL Improvements. MySQL before the InnoDB Plugin Traditionally, the MySQL…

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• "FOR UPDATE" v/s "LOCK IN SHARE MODE" : Allow concurrent threads to read updated "state" value of locked row

  - by shadesco

  I have the following scenario: User X logs in to the application from location lc1: call it Ulc1 User X (has been hacked, or some friend of his knows his login credential, or he just logs in from a different browser on his machine,etc.. u got the point) logs in at the same time from…

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• Keeping video viewing statistics breakdown by video time in a database

  - by Septagram

  I need to keep a number of statistics about the videos being watched, and one of them is what parts of the video are being watched most. The design I came up with is to split the video into 256 intervals and keep the floating-point number of views for each of them. I receive the data…

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• InnoDB "Column count doesn't match value count at row 1"

  - by Webnet

  I'm having issues with a table. I'm using the following to create my insert query... $validatedData = array(); foreach ($post as $key => $value) { if ($key != 'submit' && $key != 'dz_tos' && $key != 'dz_billShip') { $validatedData[$key] =…

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