> is it possible that you mispelled the property?? double t in committed.
> read_commiTTed vs. read_commited
Great tip Simon! I just did copy&paste from an
old mail and did not check the spelling!

I've checked with three clients (concurrently)
and the error below is shown much more seldom than
before. Before this "read_committed" (with double t ;-))
I always get the DeadlockException. But now
it happens sometimes but not everytimes. This is not
a perfect problem solving, I think, but better
than nothing ;-) I cannot imagine, if I have
to migrate the whole data from the production database
to a new database. 

------------------------------------------------------------
 Failed to store bean to
database:interbase.interclient.DeadlockException:
[interclient][interbase] deadlock
update conflicts with concurrent update

See API reference for exception interbase.interclient.DeadlockException
 JContextEntity.storeIfModified raised EJBException
 Rollback during beforeCompletion in SubCoordinator.commit_one_phase
 Commit local transaction -> rolled back!
 Unreferenced: Stateless Session Bean in use!
------------------------------------------------------------

I actually just wonder, why does JOnAS always has to
make an update, although in my test I only use the read 
operation (many read operations! - find the beans, get the
properties, etc.) and no write operation at all...

I think there is one last way I have to check:
- Upgrade the whole InterBase + InterClient to the newest
  version (InterClient 2.0.2). I've seen the stuffs 
  at the Borland's site. It's a pitty that this version 
  only a trial version from Borland.

I'll try to ask this question in JBoss mailing list,
to see whether they also have this kind of problem.

Until this problem is solved, I would say, PostgreSQL
is a better choice for JOnAS.

Thanks a lot for your help and attention, guys!
-- 
---------------------------------------------------
Blasius Lofi Dewanto
---------------------------------------------------
OpenUSS - Open University Support System
http://openuss.sourceforge.net
---------------------------------------------------
E-Mail   : [EMAIL PROTECTED]
ICQ      : 39343280
---------------------------------------------------


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