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Re: Dead Lock problem with 8.1.3

From: Kai Hessing <kai(dot)hessing(at)hobsons(dot)de>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Dead Lock problem with 8.1.3
Date: 2006-09-28 16:35:36
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-general
Andrew Sullivan wrote:
> No, it doesn't.  Deadlock means, for the two deadlocked queries, both
> cannot possibly finish because each waits on a lock that the other
> one holds.  

Thanks for the clarification. I thought a deadlock is also, when the
system runs into an endless loop.

>> There is no output. It just takes forever. 
> . . .define "forever".  Is it doing any work?  Do you see i/o?  Is it
> in SELECT WAITING state?

No it is not in WAITING state, it is permanently working. strace is
telling me that it is constantly accessing a file:
'postgresql/8.1/main/base/1740468/pgsql_tmp/pgsql_tmp21938.0' It doesn't
cost much performance, but it is running all the time.

Please see the full update at Message-ID: <4o2bkgFclmdhU1(at)individual(dot)net>

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