Re: PGXAConnection and autocommit problem - Mailing list pgsql-jdbc

Hi,

I checked the two links you proposed.
Concerning this one: http://archives.postgresql.org/message-id/201003021629.07368.achill%40matrix.gatewaynet.com
The problem of autocommit described in the conclusion seemed to be caused by the reuse of a connexion by different
transactions.So I tried to run my tests while assuring that the connection used was really a new one (checked the ids
indebug mode), and nothing changed for me. Thus I don't think it is the same problem I'm facing. I also followed the
adviceof activating the debug mode for postgresql logs, and I got that:
 
-----
18:15:22.623 (1) simple execute, handler=org.postgresql.jdbc2.AbstractJdbc2Statement$StatementResultHandler@d458ab,
maxRows=0,fetchSize=0, flags=17
 
18:15:22.623 (1)  FE=> Parse(stmt=null,query="   UPDATE ACTUALITE SET TITRE = $1,    CONTENU = $2,    IMPORTANTE = $3,
 ETAT_ESPACE_DISCUSSION_ID = $4,    MODERATION_ID = $5,        AUTEUR_MAJ = $6,    ESPACE_DISCUSSION = $7,
DATE_PUBLICATION= $8,       DATE_EXPIRATION = $9,       DATE_MAJ = $10,       IMAGE_POSITION = $11,
IMAGE_DIMENSION= $12,       TYPE_ACTUALITE_ID = $13         WHERE ACTUALITE_ID =
$14",oids={1043,1043,16,0,0,20,16,0,0,0,20,20,20,20})
18:15:22.623 (1)  FE=> Bind(stmt=null,portal=null,$1=<'transactions'>,$2=<'<p>test transactions mmau prepare
modif</p>'>,$3=<'1'>,$4=<NULL>,$5=<NULL>,$6=<'110000000000007027'>,$7=<'0'>,$8=<'2011-01-1700:00:00.000000
+01:00:00'>,$9=<'2011-07-0500:00:00.000000 +02:00:00'>,$10=<'2011-02-15 18:15:21.733000
+01:00:00'>,$11=<'1'>,$12=<'100'>,$13=<'0'>,$14=<'182'>)
18:15:22.623 (1)  FE=> Describe(portal=null)
18:15:22.623 (1)  FE=> Execute(portal=null,limit=0)
18:15:22.623 (1)  FE=> Sync
18:15:22.639 (1)  <=BE ParseComplete [null]
18:15:22.639 (1)  <=BE BindComplete [null]
18:15:22.639 (1)  <=BE NoData
18:15:22.639 (1)  <=BE CommandStatus(UPDATE 1)
18:15:22.639 (1)  <=BE ReadyForQuery(I)
-----
As we can see, there is no BEGIN order before the update.

For the second link: http://archives.postgresql.org/message-id/4D01DFA8.3060207@emaze.net
I applied the patch you proposed for the prepare() method. Nothing changed either. The update was still commited and
thepostgresql logs did not change. I tried to check what it was actually doing in the prepare() method, to see if
everythingwas going correctly, but I couldn't succeed in seeing either the breakpoints or the debug logs I added. I
don'tsee the default PGXAConnection class logs either. Could it be possible that it doesn't even go in the prepare()
method?

Thanks for any help.
Marion

-----Message d'origine-----
De : Maurin, Marion 
Envoyé : jeudi 10 février 2011 19:45
À : 'Achilleas Mantzios'; pgsql-jdbc@postgresql.org
Objet : RE: [JDBC] PGXAConnection and autocommit problem

Thanks for those two inputs. I couldn't save time today to check but it seems interesting. I'll test to see if it's
related.

-----Message d'origine-----
De : pgsql-jdbc-owner@postgresql.org [mailto:pgsql-jdbc-owner@postgresql.org] De la part de Achilleas Mantzios
Envoyé : jeudi 10 février 2011 10:45
À : pgsql-jdbc@postgresql.org
Objet : Re: [JDBC] PGXAConnection and autocommit problem

Στις Thursday 10 February 2011 10:42:44 ο/η Heikki Linnakangas έγραψε:
> On 10.02.2011 09:50, Maurin, Marion wrote:
> > Yes, I think I saw that too, that the autocommit shouldn't be set from outside. But shouldn't the driver itself set
itto false at the beginning of the transaction?
 
> > ________________________________________
> > De : pgsql-jdbc-owner@postgresql.org [pgsql-jdbc-owner@postgresql.org] de la part de rsmogura
[rsmogura@softperience.eu]
> > Date d'envoi : mercredi 9 février 2011 21:13
> > À : pgsql-jdbc@postgresql.org
> > Objet : Re: [JDBC] PGXAConnection and autocommit problem
> >
> >   Driver should prevent set auto commit, or change it value in any case.
> >   I thought I saw exception in code preventing this.
> >   On Wed, 9 Feb 2011 14:28:44 +0000, Maurin, Marion wrote:
> >> Hi,
> >>
> >> I hope I'm in the right mailing list.
> >>
> >> I'm currently facing a problem with Postgresql XA connections. I'm
> >> trying to have my transactions working but no rollback seems to take
> >> effect. After searching, I think the problem is about the autoCommit
> >> mode which is set to true even during the transaction.
> 
> It's quite possible that there's a bug somewhere in the XA driver - 
> we've had several bugs related to autocommit and XA in the past.
> 

I remember my similar case one year ago :
http://archives.postgresql.org/message-id/201003021629.07368.achill%40matrix.gatewaynet.com

Anyways Heikki helped a lot on this one i remember, and also wrote a patch. Thanx Heikki!

> And I think this one is still pending: 
> http://archives.postgresql.org/message-id/4D01DFA8.3060207@emaze.net. 
> Could it be related?
> 
> Can you create a small self-contained test program to reproduce the 
> issue, and post it to the list?
> 
> -- 
>    Heikki Linnakangas
>    EnterpriseDB   http://www.enterprisedb.com
> 



-- 
Achilleas Mantzios

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