Resurrecting a failed node (Oracle MM replication)

Consider a scenario where there are replicated Oracle databases at 3 network nodes, say san francisco, new york and london, operating as peers in a Multi-Master replication environment. Say timestamp based conflict resolution is used for essentially all conflicts.

Now say there is a disaster at San Francisco (you know those 'quakes), and a redo log recovery is required, which brings the SF database back to 1 hour prior to the point of the failure. That is, the last hour's worth of updates aplied to the SF node database are lost.

My question is how can/does the SF node database get back in sync with the database at the other two nodes?

Thanks,

• Jim