[Zope] Oracle or PostGreSQL connection pool

[Hannu Krosing]

Michel Pelletier wrote:
> 
> > -----Original Message-----
> > From: Nemeth Miklos [mailto:nemeth@iqsoft.hu]
> >
> >
> > Do the Oracle or PostgreSQL database adapters and the ZSQL technology
> > support connection pooling?
> 
> Oracle Yes, PostgreSQL is not written by DC so I don't know.  I suspect
> yes.
> 
> > If I create a connection object, supposedly it may only be used by a
> > single thread.
> 
> Not on Oracle.  The Oracle DA is fully concurrent.  Postgres, I don't
> know.  Possible not.  Note that if a DA is not concurrent it's not
> Zope's fault, it's usually because the client libraries to interface
> that database are not concurrent.

I guess that what he meant is _not_ concurrency per se, but whetaher you 
can have multiple _connections_ with different transactions for each running 
thread. 

So when I define a DA and I have 3 working threads running concurrently, 
will Zope automatically get a separate _connection_ for each thread, 
either form a pool or pre-allocated per thread ?

-----------
Hannu