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psql(18967) malloc: *** vm_allocate(size=8421376) failed (error code=3)

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I'm doing a query that really should be too taxing. But when I execute it I get the following error(s):

psql(18967) malloc: *** vm_allocate(size=8421376) failed (error code=3)
psql(18967) malloc: *** error: can't allocate region
psql(18967) malloc: *** set a breakpoint in szone_error to debug

EXPLAIN ANALYZE SELECT a1.qname, a1.symbol, a1.num, a1.ge, a1.start, a1.stop, a1.cr, a1.str, a1.ex
FROM singlehits a1, singlehit_ge a2
WHERE a2.cnt>1 AND a2.symbol=a2.symbol;
                                                             QUERY PLAN
------------------------------------------------------------------------ ------------------------------------------------------ Nested Loop (cost=89.36..6086.42 rows=273312 width=88) (actual time=0.113..24456.508 rows=54952794 loops=1) -> Seq Scan on singlehits a1 (cost=0.00..530.82 rows=17082 width=88) (actual time=0.043..71.127 rows=17082 loops=1) -> Materialize (cost=89.36..89.52 rows=16 width=0) (actual time=0.000..0.418 rows=3217 loops=17082) -> Seq Scan on singlehit_ge a2 (cost=0.00..89.34 rows=16 width=0) (actual time=0.049..5.167 rows=3217 loops=1) Filter: ((cnt > 1) AND ((symbol)::text = (symbol)::text))
Total runtime: 30024.664 ms
(6 rows)

Given this post http://xy1.org/pgsql-general@xxxxxxxxxxxxxx/ msg01154.html
I tried both VACUUM FULL and ANALYZE on the DB to no avail.
Thanks,
Ari


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