By changing the isolation level, the J2EE developer or deployer can balance data integrity against performance constraints to performance tune the application.

通过修改隔离级别，J2EE开发人员或部署人员可以在性能的约束下平衡数据完整性，从而对应用程序进行调整。

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Three-tier architectures and popular frameworks make this isolation more difficult, because the developer might never see the SQL generated by the framework.

层架构和流行的框架让隔离过程更加困难，因为开发人员可能永远不能看到框架生成的 SQL 语句。

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In addition, a WebSphere Studio Application Developer example shows how to set access intent and isolation level in a resource reference.

此外，一个WebSphere Studio Application Developer示例将展示如何在资源引用中设置访问意图(access intent)和隔离级别(isolation level)。

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