1、查看当前默认的
innodb引擎路径：
mysql> show variables like '%innodb_data_file_path%';
+-----------------------+------------------------+
| Variable_name         | Value                  |
+-----------------------+------------------------+
| innodb_data_file_path | ibdata1:10M:autoextend |
+-----------------------+------------------------+
1 row in set (0.00 sec)
2、重新配置innodb数据文件路径及其日志路径：
innodb_data_home_dir="D:/innodb/"   
innodb_data_file_path=ibdata1:10M;ibdata2:10M:autoextend
innodb_log_group_home_dir="D:/innodb/"   --log日志路径
重启服务即可！！！
3、查看日志个数：
mysql> show variables like '%innodb_log_files_in_group%';
+---------------------------+-------+
| Variable_name             | Value |
+---------------------------+-------+
| innodb_log_files_in_group | 2     |
+---------------------------+-------+
1 row in set (0.00 sec)
配置文件中更改数量：
innodb_log_files_in_group=4  ---ib_logfile日志个数
注意：更改这个数值后要备份一下原来的日志到其他的地方，然后
重启并查看：
mysql> show variables like '%innodb_log_files_in_group%';
+---------------------------+-------+
| Variable_name             | Value |
+---------------------------+-------+
| innodb_log_files_in_group | 4     |
+---------------------------+-------+
1 row in set (0.00 sec)
4、查看支持的引擎：
mysql> show engines ;
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
| Engine             | Support | Comment                                                        | Transactions | XA   | Savepoints |
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
| FEDERATED          | NO      | Federated MySQL storage engine                                 | NULL         | NULL | NULL       |
| MRG_MYISAM         | YES     | Collection of identical MyISAM tables                          | NO           | NO   | NO         |
| MyISAM             | YES     | MyISAM storage engine                                          | NO           | NO   | NO         |
| BLACKHOLE          | YES     | /dev/null storage engine (anything you write to it disappears) | NO           | NO   | NO         |
| CSV                | YES     | CSV storage engine                                             | NO           | NO   | NO         |
| MEMORY             | YES     | Hash based, stored in memory, useful for temporary tables      | NO           | NO   | NO         |
| ARCHIVE            | YES     | Archive storage engine                                         | NO           | NO   | NO         |
| InnoDB             | DEFAULT | Supports transactions, row-level locking, and foreign keys     | YES          | YES  | YES        |
| PERFORMANCE_SCHEMA | YES     | Performance Schema                                             | NO           | NO   | NO         |
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
9 rows in set (0.00 sec)
mysql> show engine innodb status\G ;