Phil Endecott <spam_from_postgresql_general(at)chezphil(dot)org> writes:
> What would happen if I were to rollback at the end of the transaction,
> rather than committing (having made no changes)? Would that eliminate
> some or all of the catalog writes?
It would avoid fsync'ing the changes at commit time, but not really
reduce the write volume per se.
regards, tom lane