On Mon, Jun 30, 2014 at 5:36 PM, AI Rumman <rummandba@gmail.com> wrote:
> I see lots of similar log message at a certain time in a day on Postgresql
> 9,.1:
>
> LOG: process 18855 still waiting for ShareLock on transaction 2856146023
> after 1001.209 ms
> STATEMENT: UPDATE table1 SET time = $1 WHERE id = $2
>
> The table1 size is 17 G.
>
> What could be the reason for this lock contention?
> autovacuum?
>
> Please give some idea.
Query pg_stat_activity and pg_locks on intervals and you'll get to the
bottom of this.
merlin