Martijn van Oosterhout <kleptog@xxxxxxxxx> writes: > The only issue I can think of is that constraints might be violated > (duplicate keys in unique index) because one of the records might have > been invisible when the second was created... More generally, application-driven updates of derived data might be wrong because they omitted consideration of data that had become invisible. This might be a good time to press your buddy to move to 8.1 ;-) PG 8.1 contains logic that should positively prevent a wraparound, by shutting down the server if wraparound gets too close. regards, tom lane
