确定这是否适合您的需要，还要考虑您为事务定义的范围(和隔离级别)将如何影响整体并发需求。
Determine if this is appropriate for your needs, and also consider how the scope (and isolation level) you define for your transactions can impact overall concurrency requirements.
开发了EJB后，程序员必须设置定义各种特征(如ejb的事务支持和隔离级别)的部署描述符。
After developing an EJB, the programmer must set deployment descriptors that define characteristics, such as transaction support and isolation levels for the EJB.
虽然示例中使用的资源适配器不响应J2EE事务性隔离级别设置的变化，但是某些围绕关系数据库系统构建的EIS确实可能会受到影响。
Although resource adapters used in the example do not respond to changes in J2EE transactional isolation level Settings, some EISs built around relational database systems may be affected.
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