ListenQ opened a new issue, #30300:
URL: https://github.com/apache/shardingsphere/issues/30300
## Question
```
使用环境： shardingsphere-jdbc-core: 5.4.1，mybatis-plus：3.5.3.1，jdk8
场景、问题：
dataSources:
ds_0:
ds_1:
ds_0 和 ds_1 一样的表结构
db table: t_user，t_order_0，t_order_1
没有配置 XA 或 BASE 分布式事务
@Transactional(rollbackFor = Exception.class)
public void testSave() {
// 保存在ds_0.t_user
userMapper.insert(UserPo.builder().name("王二").sex(2).companyId(1).build());
// 保存ds_1.t_order_1 ,下面这行执行失败，返回错误 MysqlDataTruncation: Data truncation:
Data too long for column 'name' at row 1
orderMapper.insert(OrderPo.builder().companyId(3).name("测试太太太太太他太太太太太太太太太太太太太2").number(20).build());
}
```
上面 testSave(), 保存t_order失败会 让t_user 回滚
ShardingSphere Jdbc 是否默认支持 分布式事务处理？
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