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.

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测试资源管理器允许您定义和启用该服务器的全局组件或人工任务模拟器。

The Test Explorer allows you to define and enable global components or human task emulators for the server.

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在那种情况下，因为池管理器预先在启动时创建连接对象，所以，J2EE组件可以使用连接对象，而不会导致数据库资源管理器上的系统开销。

In that situation, a J2EE component can use connection objects without causing overheads on the database resource manager, since a pool manager creates the connection objects up front, at startup.

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