Tibor,

Minerva was replaced by the Geronimo transaction managers in ofbiz back in May of this year, but opentaps 0.9 still uses JOTM for transaction management. The next version of opentaps should incorporate the newer transaction manager currently used by the SVN version of OFBiz. The reason this was done was actually for licensing reasons, not for any technical reasons that I'm aware of.

I think the problem you are experiencing may be more related to PostgreSQL than to the transaction manager layer of opentaps and OFBiz. Even OFBiz 3.0 and 3.1, which are a year older than opentaps 0.8.3, could be scaled up with the right configuration of the database. At some volume of connections, though, PostgreSQL would have to be clustered. Have you checked whether PostgreSQL is still running successfully?

Si


On Sep 29, 2006, at 8:02 AM, tibor katelbach wrote:

Hi everyone

We are test running our production site with JMeter test and multiple users,
orders... and
we are having trouble with DB connections (as below) , it seems to appear
when some orders are created?
config :
Postgres 8.0.3 and 8.1, sequoia 0.8.3

we have a few ideas maybe someone has a real experience to share with us ?


  - we noticed when the server swaps this seems to cause more errors ?


  - we seem to have numerous  deadlocks , has any have some experience
  with such errors ?

(even with entity engine config as pool-deadlock-maxwait="300000"
pool-deadlock-retrywait="10000" pool-minsize="200" pool- maxsize="200")

  - Minerva was pulled out of the new version of Sequoia, is this
  correct and why ? should we swap it ?


- Is Geronimo a solution for replacing Minerva, I thought it was only
  a container ?

Any help on this would be more than welcome
Best Regards
Tibor


I read a few threads about the errors below but precise answer

Can't get an XAConnection

52788 (invoker-Thread-7) [ ObjectPool.java:632:ERROR] Exception in
creating new object for pool
java.lang.RuntimeException: Could not create connection

52793 (invoker-Thread-7) [  ConnectionFactory.java:65 :ERROR]
---- runtime exception report
--------------------------------------------------
There was an error getting a Minerva datasource.
Exception: java.lang.RuntimeException
Message: Could not create connection

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