遵循为数据源引用设置事务隔离级别中的步骤将事务隔离级别更改为REPEATABLE_READ，然后再次运行该应用程序。

Follow the steps in transaction isolation level setting for a data source reference to change the transaction isolation level to REPEATABLE_READ, and run the application again.

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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.

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因为EJB的事务隔离级别是在部署描述符中设置的，所以具有不同事务隔离级别的不同应用程序可以重用同一个EJB。

Because the EJB's transaction isolation level is set in its deployment descriptor, the same EJB could be reused in different applications with different transaction isolation levels.

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