On Mon, Apr 11, 2016 at 5:45 PM, Simon Riggs <simon@2ndquadrant.com> wrote: > On 8 April 2016 at 17:49, Robert Haas <robertmhaas@gmail.com> wrote: >> With the patch, you can - if you wish - substitute >> some other number for the one the planner comes up with. > > I saw you're using AccessExclusiveLock, the reason being it affects SELECTs. > > That is supposed to apply when things might change the answer from a SELECT, > whereas this affects only the default for a plan. > > Can I change this to a lower setting? I would have done this before applying > the patch, but you beat me to it.
I don't have a problem with reducing the lock level there, if we're convinced that it's safe.
I'll run up a patch, with appropriate comments.
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Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
