Re: How to set default Java version for the system to one different from IBM's default

"MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx> wrote on 02/21/2018
03:06:33 PM:

On 2/21/2018 10:04 AM, dlclark@xxxxxxxxxxxxxxxx wrote:

"MIDRANGE-L"<midrange-l-bounces@xxxxxxxxxxxx> wrote on 02/21/2018
10:32:54 AM:

We are moving to 7.3, already did on development LPAR, going to do

this

on one production LPAR this weekend.

I understand that the default Java version at 7.3 is Java 8 32-bit.

But

there's a document,
https://www.ibm.com/support/docview.wss?uid=nas8N1019917, that says

that

___IBM recommends the 64-bit version___.

I asked about this, and was told that you risk running out of memory
with the 32-bit, hence, the recommendation.

OK, so how do we set this as the default for the system, not in
individual jobs, but for everything.

Notice *SYS and the JAVA properties environment variables,

below.

Work with Environment Vars (*SYS)

Type options, press Enter.
1=Add 2=Change 4=Remove 5=Display details 6=Print

Opt Name Value

QIBM_REX_FIND_SRCMBR '*BYMBRNAME'
CLASSPATH '/java/jdbc/sqljdbc4.jar:/opt/jvaga'

QIBM_RPG_JAVA_PROPERTIES '-Djava.version=1.6;-Djava.awt.head'

LANG '/QSYS.LIB/EN_US.LOCALE '

QIBM_MULTI_THREADED 'Y'

Even so, where did you set the environment variable for Java properties,

or was that done by the system automatcally?

We set it manually as follows. Looking at this now, I see we
really need to change this for a more recent version of the JVM. ;-)


ADDENVVAR ENVVAR(QIBM_RPG_JAVA_PROPERTIES)
VALUE('-Djava.version=1.6;-Djava.awt.headless=true
;-Dos400.awt.native=true;')
LEVEL(*SYS)


Sincerely,

Dave Clark