Joseph Shraibman wrote:
I'm running:

PostgreSQL 8.2.3 on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 3.4.6 20060404 (Red Hat 3.4.6-3)

My memory settings are:

work_mem = 64MB
shared_buffers = 128MB
temp_buffers = 32MB

I ran a query that was "SELECT field, count(*) INTO TEMP temptable" and it grew to be 10gig (as reported by top)

What was the real query?
How many rows are we talking about?

> and brought the whole machine
to its knees.  How do I keep this from happening again?

Set your per-user limits (man ulimit or man bash) to restrict PG's overall memory consumption.

--
  Richard Huxton
  Archonet Ltd

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