default-storage-enginie=innodb'

让mysql支持innodb

用源码 包安装mysql 5.1.34 发现show engines;里没有innodb
 
 
cp /data/mysql/share/mysql/my-innodb-heavy-4G.cnf    到/etc/my.cnf
删除mysql数据目录里的删除ibdata1、ib_logfile1、 ib_logfile0 等文件，然后，重启mysql
每一次会出错，在重启一次就OK了
.
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         |
+------------+---------+------------------------------------------------------------+--------------+------+------------+
5 rows in set (0.00 sec)
 
让mysql默认存储引擎为Innodb
修改/etc/my.cnf
[mysqld]
default-storage-enginie=innodb
然后重启mysql数据库
./mysqladmin shutdown
./mysqld_safe &
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     | YES     | Default engine as of MySQL 3.23 with great performance     | NO           | NO   | NO         |
| InnoDB     | DEFAULT | 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         |
+------------+---------+------------------------------------------------------------+--------------+------+------------+
进入mysql 用show engines;如上图所示，Innodb已经支持了