J2EE is the primary middleware platform for distributed enterprise applications. Current J2EE (Java 2 platform enterprise edition) transaction scheduling to entity beans is still a simple First-Come First-Served (FCFS) policy.

• J2EE(Java 2 platform enterprise edition)是构建分布式企业应用的基础中间件平台；当前的J2EE事务对资源的访问调度仍然是简单的先来先服务策略；导致服务器负载很重时；次要任务和关键任务争夺有限的资源；降低了关键任务的性能与成功率.