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Information Schema Plugins Table

The Information Schema PLUGINS table contains information about server plugins.

It contains the following columns:

Column Description
PLUGIN_NAME Name of the plugin.
PLUGIN_VERSION Version from the plugin's general type descriptor.
PLUGIN_STATUS Plugin status, one of ACTIVE, INACTIVE, DISABLED or DELETED.
PLUGIN_TYPE Plugin type; STORAGE ENGINE, INFORMATION_SCHEMA, AUTHENTICATION, REPLICATION, DAEMON or AUDIT.
PLUGIN_TYPE_VERSION Version from the plugin's type-specific descriptor.
PLUGIN_LIBRARY Plugin's shared object file name, located in the directory specified by the plugin_dir system variable, and used by the INSTALL PLUGIN and UNINSTALL PLUGIN statements. NULL if the plugin is complied in and cannot be uninstalled.
PLUGIN_LIBRARY_VERSION Version from the plugin's API interface.
PLUGIN_AUTHOR Author of the plugin.
PLUGIN_DESCRIPTION Description.
PLUGIN_LICENSE Plugin's licence.
LOAD_OPTION How the plugin was loaded; one of OFF, ON, FORCE or FORCE_PLUS_PERMANENT. See Installing Plugins.
PLUGIN_MATURITY Plugin's maturity level; one of Unknown, Experimental, Alpha, Beta,'Gamma, and Stable Introduced in MariaDB 5.2.1.
PLUGIN_AUTH_VERSION Plugin's version as determined by the plugin author. An example would be '0.99 beta 1'. Introduced in MariaDB 5.2.1

It provides a superset of the information shown by the SHOW PLUGINS statement. For specific information about storage engines (a particular type of plugins), see the information_schema.ENGINES table and the SHOW ENGINES statement.

This table provides a subset of the Information Schema information_schema.ALL_PLUGINS table, which contains all available plugins, installed or not.

The table is not a standard Information Schema table, and is a MySQL and MariaDB extension.

Examples

The easiest way to get basic information on plugins is with SHOW PLUGINS:

SHOW PLUGINS;

+----------------------------+----------+--------------------+-------------+---------+
| Name                       | Status   | Type               | Library     | License |
+----------------------------+----------+--------------------+-------------+---------+
| binlog                     | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| mysql_native_password      | ACTIVE   | AUTHENTICATION     | NULL        | GPL     |
| mysql_old_password         | ACTIVE   | AUTHENTICATION     | NULL        | GPL     |
| MRG_MyISAM                 | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| MyISAM                     | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| CSV                        | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| MEMORY                     | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| FEDERATED                  | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| PERFORMANCE_SCHEMA         | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| Aria                       | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| InnoDB                     | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| INNODB_TRX                 | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_LOCKS               | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_LOCK_WAITS          | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_CMP                 | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_CMP_RESET           | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_CMPMEM              | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_CMPMEM_RESET        | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_BUFFER_PAGE         | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_BUFFER_PAGE_LRU     | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_BUFFER_POOL_STATS   | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_METRICS             | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_FT_DEFAULT_STOPWORD | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_FT_INSERTED         | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_FT_DELETED          | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_FT_BEING_DELETED    | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_FT_CONFIG           | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_FT_INDEX_CACHE      | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_FT_INDEX_TABLE      | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_SYS_TABLES          | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_SYS_TABLESTATS      | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_SYS_INDEXES         | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_SYS_COLUMNS         | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_SYS_FIELDS          | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_SYS_FOREIGN         | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| INNODB_SYS_FOREIGN_COLS    | ACTIVE   | INFORMATION SCHEMA | NULL        | GPL     |
| SPHINX                     | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| ARCHIVE                    | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| BLACKHOLE                  | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| FEEDBACK                   | DISABLED | INFORMATION SCHEMA | NULL        | GPL     |
| partition                  | ACTIVE   | STORAGE ENGINE     | NULL        | GPL     |
| pam                        | ACTIVE   | AUTHENTICATION     | auth_pam.so | GPL     |
+----------------------------+----------+--------------------+-------------+---------+

SELECT LOAD_OPTION 
FROM INFORMATION_SCHEMA.PLUGINS 
WHERE PLUGIN_NAME LIKE 'tokudb';
Empty set

The equivalent SELECT query would be:

SELECT PLUGIN_NAME, PLUGIN_STATUS, 
PLUGIN_TYPE, PLUGIN_LIBRARY, PLUGIN_LICENSE
FROM INFORMATION_SCHEMA.PLUGINS;

Other SELECT queries can be used to see additional information. For example:

SELECT PLUGIN_NAME, PLUGIN_DESCRIPTION, 
PLUGIN_MATURITY, PLUGIN_AUTH_VERSION
FROM INFORMATION_SCHEMA.PLUGINS
WHERE PLUGIN_TYPE='STORAGE ENGINE'
ORDER BY PLUGIN_MATURITY \G

*************************** 1. row ***************************
        PLUGIN_NAME: FEDERATED
 PLUGIN_DESCRIPTION: FederatedX pluggable storage engine
    PLUGIN_MATURITY: Beta
PLUGIN_AUTH_VERSION: 2.1
*************************** 2. row ***************************
        PLUGIN_NAME: Aria
 PLUGIN_DESCRIPTION: Crash-safe tables with MyISAM heritage
    PLUGIN_MATURITY: Gamma
PLUGIN_AUTH_VERSION: 1.5
*************************** 3. row ***************************
        PLUGIN_NAME: PERFORMANCE_SCHEMA
 PLUGIN_DESCRIPTION: Performance Schema
    PLUGIN_MATURITY: Gamma
PLUGIN_AUTH_VERSION: 0.1
*************************** 4. row ***************************
        PLUGIN_NAME: binlog
 PLUGIN_DESCRIPTION: This is a pseudo storage engine to represent the binlog in a transaction
    PLUGIN_MATURITY: Stable
PLUGIN_AUTH_VERSION: 1.0
*************************** 5. row ***************************
        PLUGIN_NAME: MEMORY
 PLUGIN_DESCRIPTION: Hash based, stored in memory, useful for temporary tables
    PLUGIN_MATURITY: Stable
PLUGIN_AUTH_VERSION: 1.0
*************************** 6. row ***************************
        PLUGIN_NAME: MyISAM
 PLUGIN_DESCRIPTION: MyISAM storage engine
    PLUGIN_MATURITY: Stable
PLUGIN_AUTH_VERSION: 1.0
*************************** 7. row ***************************
        PLUGIN_NAME: MRG_MyISAM
 PLUGIN_DESCRIPTION: Collection of identical MyISAM tables
    PLUGIN_MATURITY: Stable
PLUGIN_AUTH_VERSION: 1.0
*************************** 8. row ***************************
        PLUGIN_NAME: CSV
 PLUGIN_DESCRIPTION: CSV storage engine
    PLUGIN_MATURITY: Stable
PLUGIN_AUTH_VERSION: 1.0
*************************** 9. row ***************************
        PLUGIN_NAME: InnoDB
 PLUGIN_DESCRIPTION: Supports transactions, row-level locking, and foreign keys
    PLUGIN_MATURITY: Stable
PLUGIN_AUTH_VERSION: 1.2.5
*************************** 10. row ***************************
        PLUGIN_NAME: BLACKHOLE
 PLUGIN_DESCRIPTION: /dev/null storage engine (anything you write to it disappears)
    PLUGIN_MATURITY: Stable
PLUGIN_AUTH_VERSION: 1.0
*************************** 11. row ***************************
        PLUGIN_NAME: ARCHIVE
 PLUGIN_DESCRIPTION: Archive storage engine
    PLUGIN_MATURITY: Stable
PLUGIN_AUTH_VERSION: 1.0
*************************** 12. row ***************************
        PLUGIN_NAME: partition
 PLUGIN_DESCRIPTION: Partition Storage Engine Helper
    PLUGIN_MATURITY: Stable
PLUGIN_AUTH_VERSION: 1.0

Check if a given plugin is available:

SELECT LOAD_OPTION 
FROM INFORMATION_SCHEMA.PLUGINS 
WHERE PLUGIN_NAME LIKE 'tokudb';
Empty set

Show authentication plugins:

SELECT PLUGIN_NAME, LOAD_OPTION 
FROM INFORMATION_SCHEMA.PLUGINS 
WHERE PLUGIN_TYPE LIKE 'authentication' \G

*************************** 1. row ***************************
PLUGIN_NAME: mysql_native_password
LOAD_OPTION: FORCE
*************************** 2. row ***************************
PLUGIN_NAME: mysql_old_password
LOAD_OPTION: FORCE

See Also

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© 2019 MariaDB
Licensed under the Creative Commons Attribution 3.0 Unported License and the GNU Free Documentation License.
https://mariadb.com/kb/en/information-schema-plugins-table/