From: Byron Nikolaidis <byronn@insightdist.com>
To: sferac@bo.nettuno.it
Cc: pgsql-interfaces@postgreSQL.org <pgsql-interfaces@postgreSQL.org>
Subject: Re: [INTERFACES] PSQLODBC and TRANSACTIONS
Date: Tue, 12 Jan 1999 10:55:23 -0500
Message-ID: <369B706B.BEE07230@insightdist.com> (raw)
References: <369B1C13.9E56EE17@sferacarta.com>
Jose' Soares wrote:
> Hi,
>
> I'm trying transactions using M$-access and PSQLODBC without success,
> Seems that backend locks itself
> by opening two connections to work on the same table.
>
> I have a table with 3 rows:
>
> codice nome cap
> ---------------------------
> 1 pippo 0
> 2 pluto 0
> 3 topolino 0
> ---------------------------
>
The logfile shows that Access is using Manual Commit. The last two lines show a separate connection
being made and then a select statement on "operatori" table. But it is still locked from the other
connection. (see below)
I don't think there is anything the driver can do about this. You need Vladim's new locking code! I
think that is going to be in the next version of Postgres.
Byron
<Highlights from the logfile>
BEGIN
UPDATE "operatori" SET "cap"='1' WHERE "codice" = '1 '
SELECT "codice","cap" FROM "operatori" WHERE "codice" = '3 '
UPDATE "operatori" SET "cap"='1' WHERE "codice" = '3 '
SELECT "codice","cap" FROM "operatori" WHERE "codice" = '2 '
UPDATE "operatori" SET "cap"='1' WHERE "codice" = '2 '
<Another connection is created here>
SQLDriverConnect(out)='DSN=PostgreSQL;DATABASE=hygea;SERVER=verde;PORT=5432;UID=marco;PWD=;READONLY=0;PROTOCOL=6.4;FAKEOIDINDEX=0;SHOWOIDCOLUMN=0;ROWVERSIONING=0;SHOWSYSTEMTABLES=0;CONNSETTINGS=set+ksqo+to+%27on%27%3b'
<This one hangs it>
SELECT "operatori"."codice" FROM "operatori"
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To: pgsql-interfaces@postgresql.org
Cc: byronn@insightdist.com, sferac@bo.nettuno.it
Subject: Re: [INTERFACES] PSQLODBC and TRANSACTIONS
In-Reply-To: <369B706B.BEE07230@insightdist.com>
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