执行数据库'INSERT'操作时事务无法回滚

"执行数据库'INSERT'操作时事务无法回滚 "

Posted by Mr Chang on January 15, 2018      @ Views:

在使用Spring声明式事务的时候,发现在做”update”时,出现异常事务可以回滚,但是在执行”insert”的时候,后台日志虽然显示回滚了,但是数据却已经保存到了数据库中,本来以为是哪里配置出错了,后来却发现是Mysql存储引擎的的问题。我们用的Mysql版本是”5.1.73”,默认存储引擎是”MyISAM”。

查看mysql版本:

mysql> select version();
+-----------+
| version() |
+-----------+
| 5.1.73    |
+-----------+
1 row in set (0.00 sec)

查看mysql存储引擎

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)

到了这里原因就了然了,创建表时默认为”MyISAM”,关于”MyISAM”和”InnoDB”及其他的各种存储引擎的区别这里就不展开了,我们只需要将我们的表的存储引擎改为”InnoDB”就可以了。

SHOW TABLE STATUS FROM database;


ALTER TABLE table_name ENGINE = InnoDB;

mysql> ALTER TABLE table_name ENGINE = InnoDB;
Query OK, 8 rows affected (0.03 sec)
Records: 8  Duplicates: 0  Warnings: 0

如果是主库的话,最好是把默认的存储引擎改为 “InnoDB”。。。