Looking for a procedure to follow when database is brought down

I have a bi-directional Streams configuration (local capture on both ends).
Could someone either point me to the right place in the documentation, or outline for me the best course of action to follow in the event that one of the database servers either terminates on its own or needs to be brought down. Thank-you.

Thanks. We took one of the databases down for an hour, and Streams resynched seamlessly. I am just wondering, though. There must be some limit to how much new data can be added to one database while the other one is down (after which Streams will have a hard time resynching and we would be better off just doing an export/import to reload the second database from the first). Can you provide any guidance on this?

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