You can find one of those backup copies and reactivate it.
因为可以在这些备份拷贝中找到一个,并重新激活它。
How much storage space can be allocated for backup copies and archived logs?
可以给备份副本和存档的日志分配多少存储空间?
As a DBA, business rules will usually dictate how long you should keep backup copies.
作为一名DBA,业务规则通常会决定您应该保留备份副本的时间长度。
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