RE: Sun JDK on AS400? -- JAVA400-L

Title: RE: Sun JDK on AS400?

Blair,

The servlet is a "black box" to me, supplied by a third party as a jar file. I have no source to play with. I have spent many hours trying to get it to work on the AS/400, not helped by all sorts of bugs and misconfigurations which would have prevented it working on any platform. I will only say that the suppliers of the servlet (who provide it as the only means to access a secure database which they host) have not been overly open or helpful.

The servlet is communicating with another servlet at the remote site. The failures all seemed to be in the area of encryption and PKI certification (x509?). I tried it under JDKs 1.1.8, 1.2.2 and 1.3 on a V4R5 machine. I was eventually persuaded to try using an NT server with the Sun JDK - I downloaded Sun JDK 1.3.1 for this exercise. This worked. I then reverted to IBM JDK 1.2 on the NT machine, which is my usual NT JDK, and the servlet stopped working. I will probably try the IBM JDK 1.3 on NT, to get the closest equivalent environment to the one which has worked. I would love to prove them wrong.

Thanks for your reply, and any further thoughts would be welcome.

Darrell

-----Original Message-----
From: Blair Wyman [mailto:blairw@us.ibm.com]
Sent: 12 July 2001 16:52
To: JAVA400-L@midrange.com
Subject: Re: Sun JDK on AS400?

Are you saying that this servlet doesn't work in the AS/400 JVM? ..or that
you *suspect* it won't work there, because it doesn't work under the IBM
JREs for Windows or AIX?

While IBM implemented its own JVM on the AS/400, from scratch, we already
use the Sun version of the JDK classes (the classes that make up the java.*
API that are located in rt.jar).

So, if you haven't tried this servlet on the AS/400 yet, you should.

(If you can be more specific about the nature of the incompatibility, there
could be other solutions lurking. There aren't a lot of incompatibilities
between the vendor JRE versions, but there are certainly some...
Serialization is one area where things get a little dicey.)

-blair

Blair Wyman -- iSeries JVM -- (507) 253-2891
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"I was born not knowing, and have had only a
little time to change that here and there." -- Richard P. Feynman

Darrell.Kavanagh@newellan

dbudge.com To: JAVA400-L@midrange.com

Sent by: cc:

owner-java400-l@midrange. Subject: Sun JDK on AS400?

com

07/11/2001 11:24 AM

Please respond to

JAVA400-L

Hi all,

We are having to use a third party servlet to access a remote database. Due
to some unique "features" of this servlet, it will not work under the IBM
JDK/JRE - it must be using some out-of-spec features in the Sun JDK/JRE. We
are hoping that the developers of this servlet will be able to provide a
properly compliant version, but in the meantime, is it possible to use the
Sun JRE on the AS400 an if so, how should I set this up?

I am using Tomcat 3.2.1 as the servlet engine/web server. On a NT machine,
the servlet works with Sun JDK 1.3.1, but not IBM JDK 1.2.2 or 1.3.

Many thanks in anticipation,

Darrell

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