事务管理器管理全局事务，并协调进行提交或回滚的决定，从而确保它们的原子性。
The transaction manager manages global transactions and coordinates the decision to commit them or roll them back, thus ensuring their atomicity.
在必要时(如组件失败后)，事务管理器还协调资源管理器的恢复活动。
The transaction manager also coordinates recovery activities of the resource managers when necessary, such as after a component failure.
该部分是流程的体系结构集，事务管理器使用它来确保不管任何故障都能可靠地协调事务中所有的资源管理器。
This is an architected set of flows that transaction managers use to ensure all resource managers in a transaction can be reliably coordinated, irrespective of any failure.
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