Re: Partitioned tables and locks

> Is it expected that a lock on a partitioned table will take out 2 locks
> per
> > child regardless of the number of children which are excluded at plan
> time?
>
> Depends on the details of your query, and on which PG version you're
> using, but it's by no means surprising for each child table to get
> locked. (I'm not sure where *two* locks would come from, though.)

The queries were just select count(*) both with a where clause which
excludes some partitions and without, I’m on 11.

The table has over 3K partitions

>
>
> If you're working with massively partitioned tables, increasing
> max_locks_per_transaction is a good idea.

It’s 256 at the moment, with 600 connections - guess I need more.
--
James Sewell,
Chief Architect

Suite 112, Jones Bay Wharf, 26-32 Pirrama Road, Pyrmont NSW 2009
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