补偿框架就位后，发生错误时，成功的事务会被保留，这样会维持一致的数据库。

With a compensation framework in place, when an error occurs the successful transactions are reversed, resulting in a consistent database.

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当发生数据毁坏事故，例如软件故障、硬件故障、错误的应用程序逻辑和用户错误后，可以使用这些备份将数据库恢复到适当的状态。

These backups can be used to restore databases to their proper state after data corruption events, such as software failures, hardware failures, bad application logic, and user errors.

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如果在获取对象之后关闭 Hibernate 会话和相关联的数据库连接，在访问关联之前没有恢复，那么就会发生这种错误。

This error can occur if the Hibernate session and associated database connection is closed after the object was retrieved, but before the association was accessed.

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