command explain analyze crash with the "out of memory" error
I precise that I've tried a lot of values from parameters shared_buffer and
sort_mem
now, in config file, values are :
sort_mem=32768
and shared_buffer=30000
server has 4Go RAM.
and kernel.shmmax=307200000
> On Tue, 2006-02-14 at 10:15, martial.bizel@free.fr wrote:
> > Yes, I've launched ANALYZE command before sending request.
> > I precise that's postgres version is 7.3.4
>
> So what does explain analyze show for this query, if anything? Can you
> increase your sort_mem or shared_buffers (I forget which hash_agg uses
> off the top of my head...) if necessary to make it work. Note you can
> increase sort_mem on the fly for a given connection.
>
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