Although all the leading J2EE containers provide a mechanism to configure multiple realms, only one can be active at a time.
尽管所有优秀的J2EE容器提供了配置多个域的机制，但是一次只能有一个域是活动的。
2
This mechanism will generate multiple heap dumps that have been coordinated with sufficient memory leakage to facilitate comparative analysis using MDD4J.
此机制将生成与足够内存泄漏协调的多个堆转储，以便于使用 MDD4J 进行比较分析。
3
Since automated deployment requests may be initiated by multiple sources, a mechanism must be employed to ensure that physical and virtual resources assigned to a system are unique.