Re: XAResource implementation

[Kris Jurka <books(at)ejurka(dot)com>]

On Tue, 13 Nov 2007, Heikki Linnakangas wrote:

> It looks like there is indeed a bug in the Postgres driver. I believe it was 
> introduced by the recent changes to keep the connection in autocommit mode 
> when no XA-transaction is in progress.
>
> It's this call sequence that borks it up:
>
> xares.start()
> conn = xares.getConnection()
> // do stuff
> conn.close();
> conn = xares.getConnection()
> // do more stuff
> xares.end()
> xares.commit()
>
> The 2nd getConnection call inadvertently commits the transaction, and opens 
> another one.

When I raised this issue, you said it can't/shouldn't happen.  What's 
different now?  It's still a bug in the driver, but is the calling code 
doing something it shouldn't?

http://archives.postgresql.org/pgsql-jdbc/2007-06/msg00095.php

> Patch attached. I also added a test for this in the test suite.

transaction_timestamp() is an 8.2 feature, but since XA is an 8.1 feature 
you should use now() instead.  (No need for a new patch, I've updated mine 
here.)

Kris Jurka