?START INSTANCE
该命令将试图启动一个实例：
mysql> START INSTANCE mysqld4;
Query OK, 0 rows affected (0,00 sec)
?STOP INSTANCE
将试图停止一个实例：
mysql> STOP INSTANCE mysqld4;
Query OK, 0 rows affected (0,00 sec)
?SHOW INSTANCES
显示所有载入的实例名：
mysql> show instances;
+---------------+---------+
| instance_name | status |
+---------------+---------+
| mysqld3 | offline |
| mysqld4 | online |
| mysqld2 | offline |
+---------------+---------+
3 rows in set (0,04 sec)
?SHOW INSTANCE STATUS
显示选定的实例的状态和版本信息：
mysql> SHOW INSTANCE STATUS mysqld3;
+---------------+--------+---------+
| instance_name | status | version |
+---------------+--------+---------+
| mysqld3 | online | unknown |
+---------------+--------+---------+
1 row in set (0.00 sec)
?SHOW INSTANCE OPTIONS
显示实例使用的选项：
mysql> SHOW INSTANCE OPTIONS mysqld3;
+-------------+--------------------------------------------------+
|option_name | value |
+-------------+--------------------------------------------------+
|instance_name| mysqld3 |
|mysqld-path | /home/cps/mysql/trees/mysql-4.1/sql/mysqld |
|port | 3309 |
|socket | /tmp/mysql.sock3 |
|pid-file | hostname.pid3 |
|datadir | /home/cps/mysql_data/data_dir1/ |
|language | /home/cps/mysql/trees/mysql-4.1/sql/share/english|
+-------------+--------------------------------------------------+
7 rows in set (0.01 sec)
?SHOW
