Not everything that uses JAVA gets the benefit of excuting /etc/profile, which 
is where JAVA_HOME is set for our systems.   We have many places where 
sysprogs, developers have to code a JAVA home.   It would be a major headache 
at system upgrade time to notify everyone that on this date/time they need to 
update their JAVA_HOME variables from V7 to V8.   There are config files for 
CICS, DB2, RDz, EKM, TOMCAT, application code, etc that all code a JAVA_HOME.  
My apache webservers, including PKI also have their own variables for home 
directory for IHS, because IHS, comes delivered with verion/release in the 
pathname. I don’t want to have to go into every instance of httpd.conf to fix 
it on the fly with an upgrade.

Some time ago, I went to the effort to symlink JAVA and communicated that to 
all, and we have had seamless upgrades ever since.   Just prior to upgrade IPL, 
I change the symlink to point to the new version(if necessary), and then IPL.   
The world is good.

_________________________________________________________________
Dave Jousma
Assistant Vice President, Mainframe Engineering
david.jou...@53.com
1830 East Paris, Grand Rapids, MI  49546 MD RSCB2H
p 616.653.8429
f 616.653.2717


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of David Crayford
Sent: Thursday, January 21, 2016 8:06 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Where's Java!? (SMP/E needs to know.)

> I also manage manually with generic symlinks.   I do this for Apache 
> webserver as well.

Why? I'm interested why you would choose a symlink as opposed to a config which 
sets an environment variable.

>
> _________________________________________________________________
> Dave Jousma
> Assistant Vice President, Mainframe Engineering david.jou...@53.com
> 1830 East Paris, Grand Rapids, MI  49546 MD RSCB2H p 616.653.8429 f 
> 616.653.2717
>
> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] 
> On Behalf Of Paul Gilmartin
> Sent: Wednesday, January 20, 2016 4:35 PM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Where's Java!? (SMP/E needs to know.)
>
> Dammit!  The path to Java changes with any z/OS release and/or any Java 
> release.  I need continually to add to my PATH variable to keep up.  And 
> there's nothing an ISV can supply in JCL samples for SMP/E's SMPJHOME; the 
> example in the SMP/E Reference is woefully outdated.
>
> This makes as little sense as if programmers were required to code "//SYSLIB  
> DD  DSN=SYS1.ZOSV2R2.MACLIB".
>
> I'm inclined to submit an RFE for either a utility to find Java or for IBM's 
> supplying a usable symbolic  link to a preferred Java.
> Retroactive; I can't wait for everyone to be on z/OS 2.3
>
> Any suggestions on form or rationale for such an RFE?
>
> Thanks,
> gil
>
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