"Nykolyn, Andy (AS)" <andrew.nykolyn@ngc.com> writes:
>> 8.4.what exactly, and did you update versions around the time this
>> started happening? I'm worried that this may represent a
>> newly-introduced bug. Can you provide a self-contained test case?
>> It doesn't matter if it only fails occasionally, as long as we can
>> keep running it till it does fail.
> It is version 8.4.1 and it has been that for almost 3 years.
8.4.1? Well, the *first* thing you ought to do is update to 8.4.10
so we can see if this represents an already-fixed bug. In a quick
look through the release notes I see at least two possibly related
bug fixes, and in any case there are a slew of known crash and data
corruption bugs you are vulnerable to.
regards, tom lane