From: | Tatsuhito Kasahara <kasahara(dot)tatsuhito(at)oss(dot)ntt(dot)co(dot)jp> |
---|---|
To: | Guillaume Smet <guillaume(dot)smet(at)gmail(dot)com> |
Cc: | depesz(at)depesz(dot)com, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: display previous query string of idle-in-transaction |
Date: | 2009-03-26 08:16:07 |
Message-ID: | 49CB39C7.2000008@oss.ntt.co.jp |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
Guillaume Smet wrote:
> On Wed, Mar 25, 2009 at 5:48 PM, hubert depesz lubaczewski
> <depesz(at)depesz(dot)com> wrote:
>> I would love to get it, but when I suggested it some time in the past
>> Tom shot it down as bad idea.
>>
>> http://archives.postgresql.org/message-id/20071016132131.GA4438@depesz.com
>
> I agree with Tom here. I tracked a lot of idle in transaction problems
> and you need the whole sequence of queries of all the backends to
> really understand what happens.
> The last query executed is mostly useless to solve this sort of
> problem. At least, it was for me in every case I had to deal with.
I think so too. But last-query-string may be a useful *hint*.
It is a hard work to trace the whole sequence of queries.
In most cases, last query string is enough information to solve the
long transaction problem. And I want a easy way to get the informarion.
# last query string is also a key to trace queries.
"COMMIT;BEGIN;idle in transaction" is not a problem on 8.3 or later, but
"(BEGIN;)SOME SQL;idle in transaction" is a problem.
So, main purpose of displaying the last query string is ..
- check whether "idle in transaction (running long time) process
after SOME SQL" is exists or not.
- check the content of "SOME SQL".
best regards,
--
Tatsuhito Kasahara
kasahara(dot)tatsuhito(at)oss(dot)ntt(dot)co(dot)jp
From | Date | Subject | |
---|---|---|---|
Next Message | Peter Eisentraut | 2009-03-26 08:21:14 | Re: SSL over Unix-domain sockets |
Previous Message | higepon | 2009-03-26 07:39:41 | Re: pg_dump Add dumping of comments on index columns |