From: | John Lister <john(dot)lister(at)kickstone(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | John Lister <john(dot)lister-ps(at)kickstone(dot)com>, pgsql-admin(at)postgresql(dot)org |
Subject: | Re: Should autovacuum do a database wide vacuum near transaction limit? |
Date: | 2011-01-22 09:27:32 |
Message-ID: | 4D3AA304.7070506@kickstone.com |
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Lists: | pgsql-admin |
On 21/01/2011 23:40, Tom Lane wrote:
> "John Lister"<john(dot)lister-ps(at)kickstone(dot)com> writes:
>> On another bizarre note, A database wide vacuum has just finished, but I'm
>> still getting the warnings:
>> GMT WARNING: database "backend" must be vacuumed within 10205310
>> transactions
> Did you do that vacuum as a superuser?
Thanks for your help, but I managed to work it out using an answer you
gave in another thread. I looked at which tables had a frozen xid equal
to the database value and found that there were 7 temporary tables with
numbers equal or very close to it. I couldn't find a way to determine
which process created those tables ( - is this possible?) and therefore
see how long it had been running, etc
Instead I tried to vacuum them, but this didn't make any difference (or
indeed do anything), so in the end I deleted the tables manually
instead, which instantly reset the transaction count back to the
1billion mark. I now need to find out which process probably died due
to its temp tables disappearing, again they appeared odd - single
alphabetical names - which I wasn't expecting...
Was this expected behaviour with temporary tables?
Cheers
John
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