Heikki Linnakangas wrote: > Why does the application LOCK pg_auth?
It does it with NOWAIT to determine if some other connection had already locked it (because it was modifying some roles) in order not to lock up the program. This (or something like it, because this doesn't work, after all) is unfortunately necessary because schema changes don't obey ordinary snapshot rules. -- Peter Eisentraut http://developer.postgresql.org/~petere/ ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend