Re: Deadlock in PostgreSQL 7.3.4 - Mailing list pgsql-bugs

From Philipp Reisner
Subject Re: Deadlock in PostgreSQL 7.3.4
Date
Msg-id 200308191152.36232.philipp.reisner@linbit.com
Whole thread Raw
In response to Re: Deadlock in PostgreSQL 7.3.4  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Deadlock in PostgreSQL 7.3.4
List pgsql-bugs
Am Montag, 18. August 2003 15:38 schrieb Tom Lane:
> Philipp Reisner <philipp.reisner@linbit.com> writes:
> > Now if the applications issues one delete statement concurrently on
> > two connections both block forever.
> >
> > Please correct me if I am wrong, but should not one of the statements
> > succeed and the other simply fail ?
> >
> > Aug 18 10:34:25 nut1 postgres[4934]: [44389] LOG:
> >                      query: delete from Calls where objID = 2268645
> >
> > Aug 18 10:34:25 nut1 postgres[4933]: [44071] LOG:
> >                      query: delete from Calls where objID = 2268645
> >
> >  4933 ?        S      5:20 postgres: sd sd 10.2.1.5 idle in transaction
> >  4934 ?        S      5:08 postgres: sd sd 10.2.1.5 DELETE waiting
>
> I see no deadlock.  4933 is waiting for its client to issue another
> command.  4934 is waiting to see if it can delete the row.
>
>             regards, tom lane

Hi Tom,

Right, thanks for pointing it out for me. It seems to be somwhere in
the application code or PostgreSQL's jdbc driver.

Finally we are able to reproduce the "Lockup" and we will continue
to work out if it is in the App or in the jdbc driver.

-Philipp
--
: Dipl-Ing Philipp Reisner                      Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH          Fax +43-1-8178292-82 :
: Schönbrunnerstr 244, 1120 Vienna, Austria    http://www.linbit.com :

pgsql-bugs by date:

Previous
From: "Marcus England"
Date:
Subject: Re: Database Grants Bug
Next
From: Arnold Mavromatis
Date:
Subject: postgresql 7.3.2 bug on date '1901-12-13' and '1901-12-13' - PK v iolation