Tom Lane wrote: > Alvaro Herrera <alvhe...@commandprompt.com> writes: > > Excerpts from Kevin Grittner's message of vie sep 03 19:06:17 -0400 2010: > >>> How about IsolationUsesXactSnapshot > > > I find this name confusing :-( Doesn't a READ COMMITTED transaction use > > transaction snapshots as well? > > AFAIR it doesn't keep the first snapshot around. If it did, most of > your work on snapshot list trimming would have been useless, no?
Technically, serializable uses a single transaction snapshot and read committed uses statement snapshots. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
