在使用Spring声明式事务的时候,发如今作”update”时,出现异常事务能够回滚,可是在执行”insert”的时候,后台日志虽然显示回滚了,可是数据却已经保存到了数据库中,原本觉得是哪里配置出错了,后来却发现是Mysql存储引擎的的问题。咱们用的Mysql版本是”5.1.73”,默认存储引擎是”MyISAM”。mysql
mysql> select version();+-----------+| version() |+-----------+| 5.1.73 |+-----------+1 row in set (0.00 sec)sql
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)复制代码
到了这里缘由就了然了,建立表时默认为”MyISAM”,关于”MyISAM”和”InnoDB”及其余的各类存储引擎的区别这里就不展开了,咱们只须要将咱们的表的存储引擎改成”InnoDB”就能够了。数据库
SHOW TABLE STATUS FROM database;
复制代码
ALTER TABLE table_name ENGINE = InnoDB;复制代码
mysql> ALTER TABLE table_name ENGINE = InnoDB;
Query OK, 8 rows affected (0.03 sec)
Records: 8 Duplicates: 0 Warnings: 0复制代码
若是是主库的话,最好是把默认的存储引擎改成 “InnoDB”。。。微信