openerp-india team mailing list archive

[Fabian Semal <fabian.semal@xxxxxxxxxxxxxxxx>]

Hello,

Just encountered the problem after upgrading a old 6.1 db to last
revision.

If it helps, here is how to solve it:

On Ubuntu Lucid  :

apt-get remove --purge psycopg2
wget http://www.psycopg.org/psycopg/tarballs/PSYCOPG-2-4/psycopg2-2.4.5.tar.gz
tar xvzf psycopg2-2.4.5.tar.gz
cd psycopg2-2.4.5
python setup.py install

On Ubuntu Oneiric :

sudo pip install --upgrade psycopg2

Regards,

Fabian

-- 
You received this bug notification because you are a member of OpenERP
Indian Team, which is subscribed to OpenERP Server.
https://bugs.launchpad.net/bugs/992525

Title:
  TransactionRollbackError due to concurrent update could be better
  handled

Status in OpenERP Server:
  Confirmed

Bug description:
  While using openerp, psycopg2 raises TransactionRollbackError quite
  often even on small database.

  This does not seem to be easily reproduceable as it seems to be a
  conflict between two thread accessing the same table. Nevertheless, I
  provided a quick video reproducing this while installing "base_crypt"
  on my computer.

  This occurs mostly at module installation. And can completely mess up
  the module installation by giving empty wizard windows of instance.

  I guess it could also occurs in other situations (in multi-user
  context), where the bug would be quite difficult to reproduce and with
  unforeseeable consequences ;)

  I've spotted an other bug that is due to this it seems:
  https://bugs.launchpad.net/bugs/956715

  In my case (single user), it seem to hit more often on fast computers.
  To make a probable better guess, it seems to hurt more often whenever
  using a local connection between the browser and the server. It could
  be about the web module trying to update the res_users session info
  and may collide with normal operation.

  On my computer, from a new database, installing the 'base_crypt' will trigger the exception.
  When using a distant connection, the bug won't show up.

  Please check the video I've posted with the bug report if you want to
  have more detail on the procedure I used. Sorry for the bad sound
  recording. Note that the video will show you the bug occuring on my
  computer and NOT occuring on a distant computer.

  I'm providing a merge proposal along with this patch which solves the
  issue for me, but need a patient review.

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