MySQL: Understanding Storage Engines and InnoDB Status

I faced this problem when I was trying to find information about the engines inside MySQL DB. It is quite easy to work with MySQL, but the engines inside MySQL are also interesting. The information about the engines can be found by using the following commands in the query editor or console:

SHOW ENGINE INNODB STATUS;

The above query/command will help you find information about the InnoDB engine. Here, I have used INNODB in the query.

SHOW ENGINES;

The above query/command will help you find the available storage engines in your MySQL installation and some information about them.

The output can be different depending on the MySQL version and configuration. For example, you may see engines such as:

InnoDB
MyISAM
MEMORY
CSV
ARCHIVE
BLACKHOLE

InnoDB is the default storage engine in current MySQL releases. It supports transactions, row-level locking, foreign keys, and crash recovery.

If you want to check the storage engine used by a particular table, you can use:

SHOW TABLE STATUS LIKE 'table_name';

The Engine column in the output shows the storage engine used by that table.

SHOW ENGINE INNODB STATUS is useful when you need detailed information about the current internal status of InnoDB. It can provide information about transactions, locks, semaphores, buffer pool activity, and other InnoDB information.

The SHOW ENGINES command is useful for checking which storage engines are available in your MySQL installation.

The list of available engines can be different depending on the MySQL version and configuration. Therefore, it is better to check the output from your own MySQL installation instead of relying on an old list of engines.

[Read more about MySQL storage engines and internal commands in the MySQL documentation.]