我正在阅读一篇关于 EJB 服务器中的 2-PC 和分布式事务的文章。它说：
2-PC 允许跨不同服务器管理事务，
资源（例如，数据库和JMS 提供者）。 2-PC 的详细信息超出了
本书的范围，但支持它的系统不需要任何额外的操作
由 EJB 或应用程序开发人员编写。
除了在自己的环境中管理事务之外，EJB 服务器还可以协调
与其他交易系统。例如，如果一个 EJB 实际上来自
与 BankEJB 不同的应用程序服务器，这两个应用程序服务器将
合作将事务作为一个工作单元进行管理。
如果我有两个不同的企业应用程序（A 和 B）在托管在两台不同计算机上的两个应用程序服务器上运行。我使用的应用程序服务器是 WebLogic 和 Oracle AS。 2 个 PC/分布式事务是否有可能协调两个服务器之间的事务（即使它们来自不同的供应商）？如果我的问题不清楚，请告诉我。
I was reading an article about 2-PC and distributed transaction in EJB server. It says:
A 2-PC allows transactions to be managed across different servers and
resources (e.g., databases and JMS providers). The details of a 2-PC are beyond the
scope of this book, but a system that supports it will not require any extra operations
by an EJB or application developer.
In addition to managing transactions in its own environment, an EJB server can coordinate
with other transactional systems. If, for example, an EJB actually came from a
different application server than the BankEJB, the two application servers would
cooperate to manage the transaction as one unit-of-work.
If I've two different Enterprize Apps (A and B) running on two app-server that are hosted in two different machines. The application servers that I'm using will be WebLogic and Oracle AS. Is it possible that 2 PC/distributed transaction will co-ordinate the transaction across the two servers (even, if they are from different vendors)? Let me know, If my question is not clear.
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理论上，EJB 规范要求 EJB 容器使用 OTS 实现事务互操作性或抛出异常。
实际上，WebLogic 似乎确实实现了事务互操作性：
http://download.oracle.com/docs/cd/E12840_01/wls/docs103/jta/trxsvc.html#wp1056344
...但 OC4J 没有：
http://download.oracle.com/docs/cd/B12314_01/web.904/b10326/interop.htm
In theory, the EJB spec requires EJB containers to either implement transaction interoperability using OTS or to throw an exception.
In practice, it appears that WebLogic does implement transaction interoperability:
http://download.oracle.com/docs/cd/E12840_01/wls/docs103/jta/trxsvc.html#wp1056344
...but OC4J does not:
http://download.oracle.com/docs/cd/B12314_01/web.904/b10326/interop.htm