在同一 Amazon RDS 上创建重复的 SQL 服务器数据库

Question

背景： 我正在将一些客户端移动到 AWS RDS SQL 服务器实例。每个人都有两个数据库：一个用于他们的实时数据，一个用于训练数据，这是他们实时数据的副本。训练数据库通过使用实时数据库定期恢复来保持最新。理想情况下，这些数据库将托管在同一个 RDS 实例上，因为它们不是那么大，而且托管成本会减半。

问题：亚马逊有这些限制in their documentation：

You can't restore a backup file to the same DB instance that was used to create the backup file. Instead, restore the backup file to a new DB instance. Renaming the database is not a workaround for this limitation.

You can't restore the same backup file to a DB instance multiple times. That is, you can't restore a backup file to a DB instance that already contains the database that you are restoring. Renaming the database is not a workaround for this limitation.

因此，像往常一样备份实时数据库并将其恢复到训练数据库已经过时了。除了为每个客户端托管两个单独的实例之外，我最好的选择是什么？

Answer 1

虽然可以为数据库生成脚本，将其导入别处，备份并恢复到原始实例，但对我来说这不是一个很好的解决方法。我不得不放弃使用 RDS 实例，转而采用更传统的方式，即在 Windows EC2 实例上托管多个训练数据库。

Answer 2

好消息：

之前在 the RDS Documentation 中列出的限制已被删除：

You can't restore a backup file to the same DB instance that was used to create the backup file. Instead, restore the backup file to a new DB instance. Renaming the database is not a workaround for this limitation.

You can't restore the same backup file to a DB instance multiple times. That is, you can't restore a backup file to a DB instance that already contains the database that you are restoring. Renaming the database is not a workaround for this limitation.

我刚刚对此进行了测试，并且能够使用定义的 msdb.dbo.rds_restore_database 存储过程将同一备份多次还原到同一 RDS SQL 服务器上的不同数据库名称而没有问题在链接文档中。