Difference between revisions of "MySQL"

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(Change mysql default engine to InnoDB)
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== Change mysql default engine to InnoDB ==
 
== Change mysql default engine to InnoDB ==
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Check if your MySQL installation has InnoDB engin enabled:
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  $ mysql -h localhost -u root -p
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  mysql> show engines;
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In order to change the default storage engine edit '''/etc/mysql/my.cnf''' and under '''[mysqld]''' section in your ini file, and add:
 
In order to change the default storage engine edit '''/etc/mysql/my.cnf''' and under '''[mysqld]''' section in your ini file, and add:
  
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{{Advice|[http://en.wikipedia.org/wiki/InnoDB InnoDB] is the preferred engine because it support transactions. [http://en.wikipedia.org/wiki/MyISAM MyISAM] is more responsive but does not support transactions.}}
 
{{Advice|[http://en.wikipedia.org/wiki/InnoDB InnoDB] is the preferred engine because it support transactions. [http://en.wikipedia.org/wiki/MyISAM MyISAM] is more responsive but does not support transactions.}}
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See also:
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* [http://dev.mysql.com/doc/refman/5.0/en/converting-tables-to-innodb.html Converting Tables from Other Storage Engines to InnoDB]
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* [http://highervisibilitywebsites.com/convert-your-mysql-database-myisam-innodb-and-get-ready-drupal-7-same-time Convert your MySQL database from MyISAM to InnoDB]
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* [[MySQL-OpenKM 5.0 | OpenKM 5.0]] [[File:Padlock.gif]] (also valid for OpenKM 5.1)
 
* [[MySQL-OpenKM 5.0 | OpenKM 5.0]] [[File:Padlock.gif]] (also valid for OpenKM 5.1)

Revision as of 19:12, 14 February 2012

Download MySQL JDBC driver from MySQL Home Page and move it to $JBOSS_HOME/server/default/lib.


Nota clasica.png If you get an error like this:
Packet for query is too large (1708726 > 1048576).
You can change this value on the server by setting the 'max_allowed_packet' variable.
You need to modify your MySQL server configuration file and increase the value of the max_allowed_packet property. Don't forget to restart the MySQL after any change in this file. In Debian based distros like Ubuntu, this configuration file is located at /etc/mysql/my.cnf.

Change mysql default engine to InnoDB

Check if your MySQL installation has InnoDB engin enabled:

 $ mysql -h localhost -u root -p
 mysql> show engines;

In order to change the default storage engine edit /etc/mysql/my.cnf and under [mysqld] section in your ini file, and add:

 default-storage-engine = innodb

Nota idea.png InnoDB is the preferred engine because it support transactions. MyISAM is more responsive but does not support transactions.

See also: