RE: Attn 7.1 users who plan on staying there for an indefinite time

> Without it, how does the system know which JDK to use?
> Anyone out there on V7R2 or V7R3 and no Java_Home, which JDK is being
used?

The order for how a JVM is selected is documented in the KC:

[1]https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/rzaha/multjdk.htm
[2]https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_72/rzaha/multjdk.htm



----- Original message -----
From: "Steinmetz, Paul" <PSteinmetz@xxxxxxxxxx>
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>
To: "'Midrange Systems Technical Discussion'" <midrange-l@xxxxxxxxxxxx>
Cc:
Subject: RE: Attn 7.1 users who plan on staying there for an indefinite
time
Date: Wed, Apr 19, 2017 9:29 AM

Rob,

At V7R1, we are still using JDK6, as a default, three 3rd party apps.
We do NOT have a *SYS Java_Home environment variable, so I assuming JDK
6 is the V7R1 default, is this correct?
Or, every Java app we are running has the JDK hardcoded, somewhere,
somehow.
We have one in-house app using JDK8, set by a *JOB Java_Home environment
variable.

I found some notes from 2013, we added a *SYS Java_Home, caused our
credit card app to fail on startup. (Curbstone C2)
Thus, the Java_Home was removed.

For V7R2 and V7R3, what would be the default JDK if no *SYS Java_Home
envirnament variable is set.
Reading the tech doc below, from my understanding, you should have
Java_Home variable, either *SYS or *JOB.
Without it, how does the system know which JDK to use?
Anyone out there on V7R2 or V7R3 and no Java_Home, which JDK is being
used?

" Beginning in IBM i 7.1, the IBM Technology for Java is the only
available JVM, and it requires the environment variable JAVA_HOME to be
specified to determine which JDK to use. This is important to note
because a Java application that relied on java.version to set the
version will potentially not use the same Java JDK version as in
previous releases."

[3]http://www-01.ibm.com/support/docview.wss?uid=nas8N1011867

Paul

-----Original Message-----
From: MIDRANGE-L [[4]mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf
Of Rob Berendt
Sent: Wednesday, April 19, 2017 7:54 AM
To: Midrange Systems Technical Discussion
Subject: Attn 7.1 users who plan on staying there for an indefinite time

I recommend that 7.1 users download JDK 7 and JDK 8 from ESS (before EOS
of 7.1 on April 30, 2018) and get those installed on to their IBM i.
IBM will drop support for JDK 6 after December 31, 2017.
IBM i 7.3 does not support JDK 6 at all.
Therefore, your vendors may come out with a version which may require
that you upgrade your JDK.
These versions of JDK are not on your distribution media and must be
ordered directly from ESS (aka Entitled Systems Support)
[5]http://www-304.ibm.com/servers/eserver/ess/OpenServlet.wss
Sign in
My Entitled Software
Software Downloads
IBM i and your version
Just IBM i
Language
Check Hide/Show instead of the box
Select Hide/Show and not the box on "5817: i7.1 B_GROUP1
v07.01.00,ENU,DVD"
Check the boxes on:
- Developer Kit for Java 7.0 32bit
- Developer Kit for Java 7.0 64bit
- Developer Kit for Java 8 32bit
- Developer Kit for Java 8 64bit

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
[6]http://www.dekko.com

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