Hi,

> -----Urspr�ngliche Nachricht-----
> Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Gesendet: Freitag, 27. September 2002 10:18
> An: OJB Users List
> Betreff: Re: OJB/JDO in a EJB context
> 
> 
> 
> 
> Hi Thimo,
> 
> > >>The first solution can be :  session bean wich is using
> > >>direclty OBJ as a persistence manager. Entity beans are 
> > >>completly ignored in this case. Is it make sense for you ?
> > 
> > I generally recommend this approach!
> 
> How does this approach work in a clustered environement. Do we have to
> expect problems with the PersistenceBroker?
> 
> ####
> When only using the PB-api without caching I don't expect problems.
> You could use the optimistic locking feature to have control of the
> persistence operation.
> Using the ODMG api could be problematic, because the LockManager
> will not be shared in a cluster.
> 

Not completely true! 
There is also a distributed Lockmanager implementation that will provide
proper tx isolation in a server cluster.
You just have to enable it in OJB.properties.

cheers,
Thomas

> regards,
> Armin
> 
> 
> 
> 
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