Hi Kevin,
Which version of TopLink do you use? Their version 2 & Weblogic version
broucher looks impressive
What's the fundamental flaw of their design you have found? What are the
limitations?
What's the performance like (against Oracle 8)? Is it possible to achieve
50TPS for 1000 users system?
What other products you have in mind as possible alternative?
cheers
chuck
----------
> From: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
> Subject: Re: EJB with O/R mapping tool?
> Date: Thursday, July 15, 1999 5:13 AM
>
> > From: Chuck Zheng [mailto:[EMAIL PROTECTED]]
> >
> > Has any one used O/R mapping tool / persistence framework
> > (e.g. TopLink,
> > JavaBlend, Persistent Java?) with EJB development? Any
> > comments regarding
> > their ease-of-use, functionality, reliability, performance,etc?
>
> We're using TOPLink on our project. It might be fine for simple class
models and application (it seemed to be fine when we initially tested it;
until our system got moderately complex), but it has been a nightmare for
our application. I can't say that it's any worse than other products, but
we would try any other product or (if all else failed) write our own
framework before using TOPLink again on a large project (we're still going
to deploy with it because it's too late to change). It has probably been
our single greatest liability.
>
> TOPLink is not easy to use in anything but trivial class models. It does
have some nice behavior, but the design is so fundamentally flawed, we've
had to do a great deal of work to get around its limitaitons. It seems to
be fairly reliable at this point (we had a lot of problems initially, and
there are still some caching problems). The performance is horrible (or it
seems so to me). I don't know all of the reasons for this, but one reason
might be that TOPLink makes at least three clones of each object it writes.
>
> That may be more (or less) than you wanted to know, but I thought I'd at
least give our experiences.
>
> -Kevin
>
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