java - 带有 jta ="true"的 nonXADatasource 和 XADataSource 有什么区别？

Question

我对我们可以允许将 JTA 事务与非 XA 数据源一起使用这一事实感到困惑。 Link to the documentation .那么 XA/非 XA 数据源之间有什么区别？我们为什么要使用 XA 数据源？

Answer 1

An XA transaction, in the most general terms, is a "global transaction" that may span multiple resources. A non-XA transaction always involves just one resource.

An XA transaction involves a coordinating transaction manager, with one or more databases (or other resources, like JMS) all involved in a single global transaction. Non-XA transactions have no transaction coordinator, and a single resource is doing all its transaction work itself (this is sometimes called local transactions).

注意:以上解释来自:theserverside (迈克·斯 PIL )

jta="true"，事务自动提交。