您的事务管理器能保证较高的可用性吗？
使用支持XA的事务管理器时的有用结构。
Useful structures when working with an XA-enabled transaction manager.
资源管理器失败时的事务管理器行为。
Behavior of transaction manager if the resource manager fails.
启动事务前，事务管理器检测到一个错误。
The transaction manager detects an error before starting the transaction.
此外，应用程序使用事务管理器来确保数据交换的可靠性。
In addition, the application USES a transaction manager to ensure the reliability of data exchange.
在此示例中，事务管理器流程使用以下参数连接到数据库。
This example causes the transaction manager process to connect to the database with these parameters.
事务管理器负责协调所有事务参与者之间的通信。
The transaction manager is responsible for coordinating communication between all transaction participants. The relationship between the transaction manager and resource managers is shown in Figure 2
事务管理器要么是一个多线程环境，要么是一个多进程环境。
The transaction manager can either be a multi-threaded or a multi-process environment.
事务管理器请求所有资源管理器准备提交可恢复资源(准备)。
The transaction manager asks all the resource managers to prepare to commit recoverable resources (prepare).
在操作特定的事务管理器时，需要此参数来改进DB2的性能。
This parameter is required to improve performance of DB2 when operating with the particular transaction manager.
只有在事务管理器启动两阶段提交进程时，更新才会变得确定。
The updates only become hardened once the transaction manager initiates the two-phase commit process.
WebSphere事务管理器将尝试获取到RAC的新连接。
The WebSphere transaction manager then attempts to get a new connection to RAC.
然而，即使执行单元是一个线程，期望的事务管理器行为都是相同的。
However, the desired behavior of the transaction manager would be the same even if the unit of execution was a thread.
事务管理器应该在资源管理器可用时，能够检测到其可用性。
The transaction manager should be able to detect the availability of the resource manager as it becomes available.
事务管理器的行为应该不会受到资源管理器状态变化的影响。
The behavior of the transaction manager should not be affected by the state change of the resource manager.
本文展示了当资源管理器出故障时，预期的事务管理器行为。
This article looks at the expected behavior of a transaction manager when a resource manager fails.
如果这些条件都不符合您的情况，应该与供货商商议事务管理器的功能。
If any of these conditions are not satisfied, you should check with your vendor about the capabilities of the transaction manager.
可以对服务层进行配置，以根据目标环境的功能使用不同的事务管理器。
You can configure your service layer to use different transaction managers depending on the capabilities of the target environment.
事务管理器负责事务响应，并且在多个资源管理器之间协调事务的结果。
A transaction manager has transactional responsibility and coordinates the outcome of the transactions across multiple resource managers.
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.
事务管理器应该能够继续处理没有包含出错资源管理器的事务。
The transaction manager should be able to continue with transactions that do not involve the failed resource manager.
当资源管理器再次恢复可用时，事务管理器需要能够完成事务。
The transaction manager is expected to finish the transaction when the resource manager becomes available again.
在事务环境中，把所有的参与者分类为资源管理器或事务管理器。
Within a transactional environment, all participants are classified as either resource managers or transaction managers.
该场景中包含一些特定的细节，用以设置事务管理器来启用XA支持。
There are some specific setup details that pertain to this scenario to set up the transaction manager to enable XA support.
一个分布式的事务涉及一个事务管理器和一个或者多个资源管理器。
A distributed transaction involves a transaction manager and one or more resource managers.
所有这些实体都与事务管理器进行交互，于是应用程序代码就不必与之交互了。
All of these entities interact with the transaction manager so that your application code doesn't have to.
事务管理器应该能够在出错的资源管理器恢复可用时解决出错的事务。
The transaction manager should be able to resolve the failed transaction when the failed resource manager becomes available.
如果发生数据库故障，则事务管理器将报告故障事务导致的不一致数据的可能性。
If a database failure occurs, the transaction manager reports the possibility of inconsistent data from failed transactions.
工作单元必须由在客户机业务应用程序所在的系统上运行的外部事务管理器管理。
The unit of work must be managed by an external transaction manager running on the same system as the client business application.
在动态注册中，事务分支中只包括那些向事务管理器注册的资源管理器。
In dynamic registration, only those resource managers which register with the transaction manager get involved in the transaction branch.
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