5.1.8.2. Obtaining Server Plugin Information

There are several ways to determine which plugins are installed in the server:

The INFORMATION_SCHEMA.PLUGINS table contains a row for each loaded plugin. Any that have a PLUGIN_LIBRARY value of NULL are built in and cannot be unloaded.

mysql> SELECT * FROM
                    information_schema.PLUGINS\G*************************** 1. row ***************************           PLUGIN_NAME: binlog        PLUGIN_VERSION: 1.0         PLUGIN_STATUS: ACTIVE           PLUGIN_TYPE: STORAGE ENGINE   PLUGIN_TYPE_VERSION: 50158.0        PLUGIN_LIBRARY: NULLPLUGIN_LIBRARY_VERSION: NULL         PLUGIN_AUTHOR: MySQL AB    PLUGIN_DESCRIPTION: This is a pseudo storage engine to represent the binlog in a transaction        PLUGIN_LICENSE: GPL           LOAD_OPTION: FORCE...*************************** 10. row ***************************           PLUGIN_NAME: InnoDB        PLUGIN_VERSION: 1.0         PLUGIN_STATUS: ACTIVE           PLUGIN_TYPE: STORAGE ENGINE   PLUGIN_TYPE_VERSION: 50158.0        PLUGIN_LIBRARY: ha_innodb_plugin.soPLUGIN_LIBRARY_VERSION: 1.0         PLUGIN_AUTHOR: Innobase Oy    PLUGIN_DESCRIPTION: Supports transactions, row-level locking,                        and foreign keys        PLUGIN_LICENSE: GPL           LOAD_OPTION: ON...

The SHOW PLUGINS statement displays a row for each loaded plugin. Any that have a Library value of NULL are built in and cannot be unloaded.

mysql> SHOW PLUGINS\G*************************** 1. row ***************************   Name: binlog Status: ACTIVE   Type: STORAGE ENGINELibrary: NULLLicense: GPL...*************************** 10. row ***************************   Name: InnoDB Status: ACTIVE   Type: STORAGE ENGINELibrary: ha_innodb_plugin.soLicense: GPL...

The mysql.plugin table shows which plugins have been registered with INSTALL PLUGIN. The table contains only plugin names and library file names, so it does not provide as much information as the PLUGINS table or the SHOW PLUGINS statement.