Tom Lane wrote:
> Alvaro Herrera <alvherre@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 <bruce@momjian.us> http://momjian.us EnterpriseDB
http://enterprisedb.com
+ It's impossible for everything to be true. +
