当出现一个高可用性事件时，这个资源组将故障转移到辅助计算机上，从停止的地方继续进行处理。
When a high availability event occurs, this resource group will fail over to the secondary machine and continue processing where it left off.
事务管理器要能够处理某些资源管理器的故障，而且发生这种情况时，事务管理器还要能够继续操作，这点也很重要。
It is also important that the transaction manager be able to handle certain resource manager failures, and as such continue operating should this situation occur.
在单阶段提交资源提交过程中，这样的通信故障引入了混合事务结果的危险。
Such a communication failure during commit of the one-phase commit resource introduces the risk of a mixed outcome to the transaction.
它的做法是从服务深入到应用程序组件和IT资源，以确定瓶颈或故障的来源。
IT does so by drilling down from the services to application components and to IT resources to identify the source of bottleneck or failure.
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.
数据库在回滚事务时，可能会从服务器2剥夺共享资源，而后者与故障没有任何关系。
So as the database is rolling back the transactions, Shared resources could be shifted away from server 2, which had nothing to do with the failure.
事务管理器能够处理资源管理器的灾难性故障非常重要，这样当一个资源管理器出现故障时，其余的仍能继续照常运行。
It is important that the transaction manager is able to handle catastrophic failures of the resource managers, and as such continue operating if one of the resource managers has a failure.
当在主站点出现故障时，数据库资源在辅助位置上启动。
In the event of a failure at the primary site, database resources are started at the second location.
为了执行从故障场景中恢复，事务管理器和资源管理器必须能够在事务流程的任何点从故障中恢复。
In order to implement recovery from failure scenarios, the transaction manager and the resource manager must be able to recover from a failure at any point in the transactional flow.
您能够运行未涉及出故障的资源管理器的事务吗？
Are you able to run transactions that do not involve the failed resource manager?
必须有自动检测出故障的资源的方法。
There must be a method for automatic detection of a failed resource.
不像两阶段提交资源，单阶段提交资源不能从通信故障中恢复。
Unlike a two-phase commit resource, there is no recovery from a communication failure with a one-phase commit resource.
暂时或长期的网络故障将导致资源管理器不可用。
A transient or long duration network outage can cause the resource manager to be unavailable.
资源管理器故障的常见原因。
下面是一些设计考虑因素，可以使您的事务管理器灵活应对资源管理器故障。
Here are some design considerations to help you make your transaction manager resilient to resource manager failures.
当在Browsetroubleshootinglinks模块内单击时，可以浏览故障排除的相关资源。
When you click in the Browse troubleshooting links module, you can navigate through troubleshooting resources.
一些常见的原因会引起资源管理器故障或变得不可用，其中包括
There are a few common reasons why a resource manager might fail or otherwise be unavailable. Among them
自动故障恢复 ——如果一个资源失效
Eclipse-based tooling Automatic fault recovery - if a resource fails, the failed component is automatically re-provisioned onto other servers
开发人员必须熟悉和使用配置的SIBus资源，而且在MQLink支持的故障转移的配置上还存在一些限制。
The developer must be familiar with and use the SIBus resources for the configuration, plus there are limitations on the configurations for failover which are supported by MQLink.
通过数据库管理的空间(DMS)和原始设备，我们可以减少磁盘资源的故障转移时间，因为在故障转移时将不会进行磁盘检查。
With database managed space (DMS) and raw device, we can decrease the time to fail over the disk resources, because there will be no checking of disks during failover.
发生故障或者服务器从故障中恢复之后，它按需处理从一个系统到另一个的资源组的故障转移。
It handles the failing over of the resource groups from one system to the other as needed after a failure or after a coming back of a server from a failure.
即使在发生故障的资源管理器持续不可用时，您能够在事务管理器中提交下一个事务而不出现问题吗？
Are you able to submit the next transaction on the transaction manager without any problem, even as the failed resource manager continues to be unavailable?
控制活动涉及到对任务和资源的分配、授权和决策以及监督和排除故障。
Control activities involve allocating tasks and resources, authorizing, and making decisions, as well as overseeing and troubleshooting.
故障恢复策略：这决定资源组是否执行故障恢复。
Fallback policy: This tells whether or not the resource group will fallback.
在准备和提交进程期间，资源管理器出现故障，事务管理器检测到错误。
The resource manager fails between prepare and commit processing, and the transaction manager detects the failure.
请参阅“权威支持”，获取故障诊断工具和资源的完整列表。
See The Support Authority for a complete list of troubleshooting tools and resources.
如果没有在峰值负载下积极测试和验证集群，那么在真正发生故障时，故障转移的一端可能受到资源限制，响应时间较长，甚至出现故障。
If you do not actively test and validate your clustering during peak loads, during an actual failure the failover side can become constrained and deliver poor response times or even fail.
要解决这个问题，一定要保证资源消耗等于或小于临界值，并且采用了实例资源冗余故障恢复措施。
To fix the problem, make sure resource consumption stays at or below the threshold level and instance resource redundancy failover is working.
通过用ewu值定义这些资源，可以在自动或手工故障转移、高可用性操作和灾难恢复测试或实现期间消除冲突。
Designing these resources with EWU values eliminates the possibility of conflict during automated or manual fail-overs, high-availability operations, and disaster-recovery testing or implementation.
此外，现在可以对单独的应用程序甚至单个资源进行故障转移，而以前的故障转移单位是整个队列管理器。
In addition, it is now possible to failover individual applications or even single resources, whereas previously the unit of failover was an entire queue manager.
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