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How to enable Innodb storage engine?

What is a storage Engine?

Data in MySQL is stored in files (or memory) using a variety of different techniques. Each of these techniques employ different storage mechanisms, indexing facilities, locking levels and ultimately provide a range of different functions and capabilities. By choosing a different technique you can gain additional speed or functionality benefits that will improve the overall functionality of your application.

You can configure the mysql database to use Innodb Storage engine . Just follow following simple steps for this.

1) Open your file /etc/my.cnf.

2) Comment the line




4)Now save the file and restart the mysql service on the server.

5) Now check if the engine has changed with the command:

[root@server~]# mysql

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.0.92-community MySQL Community Edition (GPL)

Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.

mysql> show engines;
| Engine     | Support | Comment                                                        |
| MyISAM     | YES     | Default engine as of MySQL 3.23 with great performance         |
| MEMORY     | YES     | Hash based, stored in memory, useful for temporary tables      |
| InnoDB     | DEFAULT | Supports transactions, row-level locking, and foreign keys     |
| BerkeleyDB | NO      | Supports transactions and page-level locking                   |

This should now change the storage engine for mysql on the server.


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