Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Shouldn't we make the autovac launcher use READ COMMITTED, too?
Anything which starts a transaction and doesn't need to use a
transaction-lifetime snapshot plus SIRead locks to achieve truly
serializable behavior should probably be ignoring
default_transaction_isolation and forcing READ COMMITTED. I would
think that should include the autovac launcher. Probably *any* of
the background processes which can get a start a transaction should
force READ COMMITTED.
-Kevin