[jaylevitt]

Interesting.. how do you deal with ID collisions after rollover? That was our big problem, even with 8-byte IDs - the ID allocator had to know the Global Truth. Dealing with collisions as "exception, try the next one" was too expensive, though with faster hardware that may be moot.

[emmelaich]

Yes, rollover is an interesting problem. With the app and scale that we're operating at that will not happen within the next few thousand centuries though. I'm actually describing how I might go about doing it, and what I /think/ Oracle RAC does.

I'm not actually certain as to the implementation.