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  2. JAVA400-L
  3. June 2014

Re: Sun Java or Open Java on IBMi

I read through the thread on the Google group go-cd you referenced. What is lacking is a specific error message to help in understanding why the agent dies. I didn't see a specific response to your query about any JNI components that might be used in the application. C program calls might be "hidden" from the Java logs although usually you'd get some kind of error message returned if the program monitors for the JNI call returns.

Not sure how to help you go forward. If you have a support agreement with IBM I'd at least open a PMR with the Java folks and reference the thread in the Google group. They might have an idea of a diagnostic that would help uncover the issue.

Pete Helgren
www.petesworkshop.com
GIAC Secure Software Programmer-Java

On 6/4/2014 2:33 AM, Charles MARTIN wrote:
About why IBM Java is not supported, i have some answers.

--------------
I'm not sure about whether it is a bad idea to try on IBMi, yet. But, as I mentioned before, IBM Java is not supported at all. Not because of lack of effort. :) There is an incompatibility (at least one) between Sun/Open Java and IBM Java, regarding SSL. That's why IBM Java will not work with Go.

My guess, even though I cannot see anything wrong in the logs, is that the agent process is dying, and that's why it goes into "lost contact" mode. Sometimes, the kernel (at least on Linux) kills a process if the system is running out of memory. I don't know enough about the IBMi to tell you whether this is happening, though.

I'd try with Sun or Open JRE, before we give up completely. As you mentioned, there might be issues (especially of performance on the IBMi), but it might not affect you or it might not be noticeable in your use case.
--------------

Have you any idea why my java process would die using IBM Java ? Or how I could analyse why it seems to die ?

Charles Martin

-----Message d'origine-----
De : JAVA400-L [mailto:java400-l-bounces@xxxxxxxxxxxx] De la part de Charles MARTIN
Envoyé : mardi 3 juin 2014 11:18
À : Java Programming on and around the IBM i
Objet : RE: Sun Java or Open Java on IBMi

I have RDi installed. I will use its embedded SDK. Thank you all for your help.

Charles MARTIN

-----Message d'origine-----
De : JAVA400-L [mailto:java400-l-bounces@xxxxxxxxxxxx] De la part de Pete Helgren Envoyé : lundi 2 juin 2014 20:32 À : Java Programming on and around the IBM i Objet : Re: Sun Java or Open Java on IBMi

One last thing...if you have RDi or anything else that IBM installs with the "Software Delivery Platform", you'll find an IBM SDK in the /IBM/SDP/jdk folder in "Program Files"

Pete Helgren
www.petesworkshop.com
GIAC Secure Software Programmer-Java

On 6/2/2014 1:27 PM, Pete Helgren wrote:
I CAN confirm that the IBM SDK v7.0 IS included in that distro as a
separate folder so you could probably stick that in your path and get
it to work (might need a JAVA_HOME as well - probably easiest just to
work in the Eclipse environment). The Eclipse IDE version is Kepler
with the IBM SDK installed so you should be able to copy and paste
your code into a new Java project and get it to run (if you have the
rest of the libs you need in the classpath).

I am glad I went to the trouble so that I have another environment to
test the IBM JVM in......

Pete Helgren
www.petesworkshop.com
GIAC Secure Software Programmer-Java

On 6/2/2014 12:37 PM, Buck Calabro wrote:
On 6/2/2014 3:59 AM, Charles MARTIN wrote:
Pete,

So far, I could not find a windows version of IBM Java :

Java Platform Standard Edition (Java SE)
IBM Developer Kits and Runtime Environments are available for
the following platforms:
AIX -- Downloads , Overview , Support and News
Linux® -- Downloads , Overview , Support and Tested
platforms and distributions
z/OS web site , Support for zEnterprise System
IBM i web site , download Java 7 from the Entitled Software
Support Site

What am I missing ?
Try starting here: http://www.ibm.com/developerworks/java/jdk/ and go
through the maze to be able to download the SDK, which comes as a ZIP
file named something like:

IBM_DevelopmentPackage_for_Eclipse_Win_X86_32_4.6.0.zip (324 MB)

--buck
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