Category: Information

Get table or DB size im Megabyte

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Sometimes it is really useful to know how large a certain database table has become. With the following SQL statement you get a list of all tables of the currently connected database with their rounded size in MB:

This query selects all tables from all connected databases. If you want to select a certain […]

Get current user, mysql version and other status information

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To get information about the currently connected user and more MySQL status information, you can call the following command if you are already logged in:

This will give you an output like that:

As you can see, you got a lot more information like operation system data, MysSQL version or the number of slow […]

Check and optimize tables in MySQL

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To check and optimize tables of a MySQL database:

To achieve the same for all databases of the respective MySQL server you can run the following command:

Further information about check and optimize tables in MySQL To get a few more facts about how to check and optimize tables in MySQL, you should […]

Find out where my.cnf is located

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To find out where the MySQL configuration (my.cnf) is stored, you can use the strace command:

You will get an output showing all the paths the MySQL deamon searches for the my.cnf upon startup like that:

As you can see, the service searches the following files: /etc/my.cnf /etc/mysql/my.cnf /usr/etc/my.cnf /home/sheldon/.my.cnf But only the /etc/mysql/my.cnf is found […]