> >> Even a database-wide vacuum does not take locks on more than one table. > >> The table locks are acquired and released one by one, as the operation > >> proceeds. > > > Has that changed recently? I have always seen "vacuumdb" or SQL > > "VACUUM" (without table specifications) running as one long > > transaction which doesn't release the locks that it is granted until > > the end of the transaction. > > You sure? It's not supposed to, and watching a database-wide vacuum > with "select * from pg_locks" doesn't look to me like it ever has locks > on more than one table (plus the table's indexes and toast table). Are there some plans to remove vacuum altogether? Mindaugas
