As an addition to that, I would recommend pgadmin3's graphical explain
tool, the diagrams it generates are (in my opinion) fantastic and help
me quickly spot problems in my schema/query.
Also take a look at:
http://www.postgresql.org/docs/8.3/static/kernel-resources.html
in regards to SHMMAX in Linux you should be able to check your current
setting by doing:
cat /proc/sys/kernel/shmmax
Did you vacuum and analyze the database tables?
>> Any support appreciated.
>>
>
> Use 'explain analyse <your query>' to get the execution plan.
>
>
> Andreas
>
--
David Gardner
