Rails - Feb 2006 - Failover with Rails?

Is it possible to change database settings programmatically?

What I am looking for is if there''s a situation where a Find(), or 
Create() fails, I would like to be able to redirect Rails to a different 
db connection.

I know that this is something that could be accomplished at the OS 
level, but because of certain constraints, I need to be able to do this 
at the application level.

Thanks in advance.

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