On Tue, Feb 28, 2012 at 6:54 PM, Tom Lane <tgl@xxxxxxxxxxxxx> wrote: > >> ... which is the ORM library (SQLAlchemy) doing a reflection of the >> table(s) involved. > > Oh, there's an ORM involved? I'll bet a nickel it's doing something > surprising, like not issuing your SET until much later than you thought. I'd rather go for an auto-rollback at some point within the transaction that issued the set work_mem. SQLA tends to do that if, for instance, an exception is risen within a transaction block (ie, flushing). You can issue the set work_mem in its own transaction, and commit it, and in that way avoid that rollback. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance