mysql innodb plugins

/*
  顯示引擎信息
*/
mysql> show engines;
+------------+---------+------------------------------------------------------------+--------------+------+------------+
| Engine     | Support | Comment                                                    | Transactions | XA   | Savepoints |
+------------+---------+------------------------------------------------------------+--------------+------+------------+
| MRG_MYISAM | YES     | Collection of identical MyISAM tables                      | NO           | NO   | NO         |
| CSV        | YES     | CSV storage engine                                         | NO           | NO   | NO         |
| MyISAM     | DEFAULT | Default engine as of MySQL 3.23 with great performance     | NO           | NO   | NO         |
| InnoDB     | YES     | Supports transactions, row-level locking, and foreign keys | YES          | YES  | YES        |
| MEMORY     | YES     | Hash based, stored in memory, useful for temporary tables  | NO           | NO   | NO         |
+------------+---------+------------------------------------------------------------+--------------+------+------------+

/*
    顯示插件信息
*/
mysql> show plugins;
+------------+--------+----------------+---------+---------+
| Name       | Status | Type           | Library | License |
+------------+--------+----------------+---------+---------+
| binlog     | ACTIVE | STORAGE ENGINE | NULL    | GPL     |
| partition  | ACTIVE | STORAGE ENGINE | NULL    | GPL     |
| CSV        | ACTIVE | STORAGE ENGINE | NULL    | GPL     |
| MEMORY     | ACTIVE | STORAGE ENGINE | NULL    | GPL     |
| InnoDB     | ACTIVE | STORAGE ENGINE | NULL    | GPL     |
| MyISAM     | ACTIVE | STORAGE ENGINE | NULL    | GPL     |
| MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL    | GPL     |
+------------+--------+----------------+---------+---------+


/*
 
*/
mysql> show variables like "have_%";
+-------------------------+----------+
| Variable_name           | Value    |
+-------------------------+----------+
| have_community_features | YES      |
| have_compress           | YES      |
| have_crypt              | YES      |
| have_csv                | YES      |
| have_dynamic_loading    | YES      |
| have_geometry           | YES      |
| have_innodb             | YES      |
| have_ndbcluster         | NO       |
| have_openssl            | DISABLED |
| have_partitioning       | YES      |
| have_query_cache        | YES      |
| have_rtree_keys         | YES      |
| have_ssl                | DISABLED |
| have_symlink            | DISABLED |
+-------------------------+----------+
注:  主要是說明have_dynamic_loading 是否爲yes, 若是是,意味着能夠動態的加載插件.


/*
   centos 上查詢mysql的安裝目錄, 主要是想找到mysql的插件存放的目錄.
*/
[zhang@localhost /]$ rpm -ql  mysql
/usr/bin/msql2mysql
/usr/bin/my_print_defaults
/usr/bin/mysql
/usr/bin/mysql_config
/usr/bin/mysql_find_rows
/usr/bin/mysql_waitpid
/usr/bin/mysqlaccess
/usr/bin/mysqladmin
/usr/bin/mysqlbinlog
/usr/bin/mysqlcheck
/usr/bin/mysqldump
/usr/bin/mysqlimport
/usr/bin/mysqlshow
/usr/bin/mysqlslap
/usr/lib/mysql/mysql_config
/usr/lib/mysql/mysqlbug