Justin <zzzzz.graf@xxxxxxxxx> writes: > I have a question reading through this email chain. Does Large Objects > table using these functions work like normal MVCC where there can be two > versions of a large object in pg_largeobject . Yes, otherwise you could never roll back a transaction that'd modified a large object. > My gut says no as > moving/copying potentially 4 TB of data would kill any IO. Well, it's done on a per-chunk basis (normally about 2K per chunk), so you won't do that much I/O unless you're changing all of a 4TB object. regards, tom lane
