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Re: BUG #5238: frequent signal 11 segfaults

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Nagy Daniel <nagy(dot)daniel(at)telekom(dot)hu>
Cc: Craig Ringer <craig(at)postnewspapers(dot)com(dot)au>, "pgsql-bugs(at)postgresql(dot)org" <pgsql-bugs(at)postgresql(dot)org>
Subject: Re: BUG #5238: frequent signal 11 segfaults
Date: 2009-12-13 16:58:11
Message-ID: 25153.1260723491@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-bugs
Nagy Daniel <nagy(dot)daniel(at)telekom(dot)hu> writes:
> I ran "select * from" on both tables. All rows were returned
> successfully, no error logs were produced during the selects.

Well, that would seem to eliminate the initial theory of on-disk
corruption, except that these *other* symptoms that you just mentioned
for the first time look a lot like index corruption.  I concur with
Pavel that intermittent hardware problems are looking more and more
likely.  Try a memory test first --- a patch of bad RAM could easily
produce symptoms like this.

> Apart from that, I think that pg shouldn't crash in case of
> on-disk corruptions, but log an error message instead.

There is very little that software can do to protect itself from
flaky hardware :-(

			regards, tom lane

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Next:From: Tom LaneDate: 2009-12-13 18:06:34
Subject: Re: BUG #5240: Stable Functions that return a table type with a dropped column fail
Previous:From: Pavel StehuleDate: 2009-12-13 16:13:30
Subject: Re: BUG #5238: frequent signal 11 segfaults

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