Rob Woollen wrote:
> <vendor>
>
> WLS RMI/IIOP or WebServices/SOAP clients should not have problems
> calling between WLS versions.
>
> WLS's RMI/T3 transport does not support calls between 5.1 and 6.x,
> though I believe it will support versions going forward.
>
> </vendor>
That's good to hear. And I would be interested to know if you agree
that some customers find this sort of compatibility important in an
Intranet/Extranet or Internet deployment configuration.
> -- Rob
>
> On Thu, Sep 06, 2001 at 12:36:17PM +1200, Evan Ireland wrote:
>
>>
>>Well clearly I wouldn't if I was a WebLogic customer :-)
>>
>>But if I was a Sybase customer, I might well do this if I
>>want to take advantage of scalability features (such as
>>eneity bean object caching) in a new server version without
>>spending tnes of thousands of dollars having client installations
>>upgraded. Bear in mind these client installations might be outside
>>my own company and may be very expensive to upgrade. Java applets
>>might help but what if the clients aren't written in Java? What
>>if they are written in VB?
>>
>>Should I have to upgrade my browser just because Amazon puts
>>in a new web server version? I think not. You may think EJB is
>>fundamentally different. I would disagree.
>>
>>Also, have you considered that some of your clients may be
>>themselves servers? In a large enterprise, who wants to have
>>to upgrade versions for all of their connected servers just
>>because one of them is to be upgraded.
>>
>>We have even had requests from customers wanting app-server
>>clusters with mixed versions. Do I want to simultaneously
>>have to upgrade all nodes in my 20-node cluster (taking my
>>site down for several days) when I can do it piece-meal and
>>keeping my site up. (Note: Sybase EAServer does not support this
>>at present, but at least we understand the value of doing so).
>>
>>True enterprise software vendors understand the importance of
>>backwards compatibility. Why throw out the 'old' if it can
>>happily 'co-exist' with the new?
>>
>>Anyway, I think I've had my say and I'll stop my BEA bashing for
>>a few weeks :-)
>>
>>
>>
>>>D
>>>
>>>
>>>
>>>>-----Original Message-----
>>>>From: A mailing list for Enterprise JavaBeans development
>>>>[mailto:[EMAIL PROTECTED]]On Behalf Of Evan Ireland
>>>>Sent: Wednesday, September 05, 2001 6:10 PM
>>>>To: [EMAIL PROTECTED]
>>>>Subject: Re: differrence in weblogic 5.1 and weblogic 6.0
>>>>
>>>>
>>>>Dion Almaer wrote:
>>>>
>>>>
>>>>
>>>>>I understand the need for backwards compatibility. However you have to
>>>>>weigh up having your server be backwards compatible,
>>>>>to getting rid of that bloat. Depending on what has been changed in the
>>>>>server side maybe you really can't be backwards compatible. It may be a
>>>>>pain to run your client using the new weblogic.jar etc... but
>>>>>
>>>>>
>>>>is it *that*
>>>>
>>>>
>>>>>much of a pain?
>>>>>
>>>>>
>>>>It could be, if you have to install weblogic.jar on 20,000 client
>>>>machines.
>>>>
>>>>
>>>>
>>>>
>>>>>D
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>>-----Original Message-----
>>>>>>From: A mailing list for Enterprise JavaBeans development
>>>>>>[mailto:[EMAIL PROTECTED]]On Behalf Of Evan Ireland
>>>>>>Sent: Wednesday, September 05, 2001 4:52 PM
>>>>>>To: [EMAIL PROTECTED]
>>>>>>Subject: Re: differrence in weblogic 5.1 and weblogic 6.0
>>>>>>
>>>>>>
>>>>>>Cedric,
>>>>>>
>>>>>>Whatever happened to backwards compatibility?
>>>>>>
>>>>>>Why shouldn't older clients be able to talk to newer servers?
>>>>>>
>>>>>><vendor>
>>>>>>
>>>>>>Still, perhaps it's better if you leave it thay way. If you annoy enough
>>>>>>of your customers, we might win some more business for Sybase EAServer.
>>>>>>
>>>>>></vendor>
>>>>>>
>>>>>>Cedric Beust wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>>>From: A mailing list for Enterprise JavaBeans development
>>>>>>>>
>>>>>>>>
>>>>>>>>this client code works fine with weblogic 5.1 but it gives following
>>>>>>>>error in weblogic 6.0
>>>>>>>>
>>>>>>>>Exception in main() :javax.naming.CommunicationException
>>>>>>>>
>>>>>>>>
>>>>[Root exception
>>>>
>>>>
>>>>>>>>is weblogic.socket.UnrecoverableConnectException: [Login failed:
>>>>>>>>'Incompatible version:Incompatible versions - this server:6.0.0b2
>>>>>>>>client:5.1.0]]
>>>>>>>>
>>>>>>>>can any one please help me and let me know what should I do
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>You cannot communicate between client and servers with
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>different versions.
>>>>>>
>>>>>>
>>>>>>
>>>>>>>Make sure you compile and run your client with Weblogic 6.
>>>>>>>
>>>>>>>--
>>>>>>>Cedric
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
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>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
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>>>>
>>>>
>>>
>>>
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