1. 用mysql> show plugins; 命令查看MySQL已经安装的插件
+--------------+----------+--------------------+---------------------+---------+
| Name | Status | Type | Library | License |
+--------------+----------+--------------------+---------------------+---------+
| binlog | ACTIVE | STORAGE ENGINE | NULL | GPL |
| partition | ACTIVE | STORAGE ENGINE | NULL | GPL |
| ARCHIVE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| BLACKHOLE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| CSV | ACTIVE | STORAGE ENGINE | NULL | GPL |
| FEDERATED | DISABLED | 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 |
| INNODB_TRX | ACTIVE | INFORMATION SCHEMA | ha_innodb_plugin.so | GPL |
| INNODB_LOCKS | ACTIVE | INFORMATION SCHEMA | ha_innodb_plugin.so | GPL |
+--------------+----------+--------------------+---------------------+---------+
12 rows in set (0.00 sec)
安装方法1. 在configure的时候加上--with-plugins=innobase 如果要添多个插件，请用半角逗号隔开
配置文件， 将my.cnf配置文件中[mysqld]下面有关innodb配置前面的#去掉就可以了。这是默认配置，可以根据个人需要进行修改
安装方法2
先查看是否支持动态加载, 重要的是have_dynamic_loading这行，如果是YES，那么继续
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 | YES |
+-------------------------+----------+
14 rows in set (0.00 sec)
安装插件
mysql> INSTALL PLUGIN INNODB SONAME 'ha_innodb.so';
mysql> install plugin INNODB soname "ha_innodb.so";
mysql> install plugin INNODB_TRX soname "ha_innodb.so";
mysql> install plugin INNODB_LOCKS soname "ha_innodb.so";
mysql> install plugin INNODB_LOCK_WAITS soname "ha_innodb.so";
mysql> install plugin INNODB_CMP soname "ha_innodb.so";
mysql> install plugin INNODB_CMP_RESET soname "ha_innodb.so";
mysql> install plugin INNODB_CMPMEM soname "ha_innodb.so";
mysql> install plugin INNODB_CMPMEM_RESET soname "ha_innodb.so"
我的debian系统上ha_innodb.so文件在/usr/lib/mysql/plugin目录下
p466106@devhz503:/usr/lib/mysql/plugin$ ls -l
total 1252
lrwxrwxrwx 1 root root 25 Jul 15 06:09 ha_innodb_plugin.so -> ha_innodb_plugin.so.0.0.0
lrwxrwxrwx 1 root root 25 Jul 15 06:09 ha_innodb_plugin.so.0 -> ha_innodb_plugin.so.0.0.0
-rw-r--r-- 1 root root 1276696 Nov 30 2010 ha_innodb_plugin.so.0.0.0
如何使用这些【information_schema】中的INNODB_TRX，INNODB_LOCKS， INNODB_LOCK_WAITS表？
？？？