Olivier Hubaut <olivier@scmbb.ulb.ac.be> writes:
> So, we're wondering if the action for putting/removing constraint could
> be executed out of the transaction, so that it may overlaps and crash in
> such case.
> Does anyone notice the same problem?
When you didn't show us exactly what you're doing or exactly what went
wrong, it's impossible to say ...
regards, tom lane