Can you post your non-default postgresql.conf settings? (I'd hazard a
guess that you have effective_cache_size set to the default 128MB).
Best wishes
Mark
On 24/11/11 11:24, Gary Warner wrote:
Very Fast Version:
Recently my database stopped respecting one of my indexes, which took a query that should run in "subsecond response time" and turning it into something that with small data sets runs in the 7-10 minute range and with large data sets runs in the 30 minute - eternity range.
Explain Analyze tells me that what used to be an Index Scan has become a Seq Scan, doing a full table scan through 140 million records.
Any thoughts on why that happens?
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