Y'all
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.
I have looked at various documents - none say anything about an overall
place to set this.
Options I've seen:
ADDENVVAR JAVA_HOME [the java home path in QOpenSys you want]
That's job level by default. And I don't think we should make a change
to the system level within a job. And I don't want to add this command
wherever we are using Java - not a huge amount, but we can use the
default, so that's what I want to do.
It is possible to set JAVA_HOME with an EXPORT or ECHO command in a
.profile stream file in the home directory for each user - not
practical, since I believe it affects only QShell and PASE. And who
wants to do this for every user on the system? Many if not most of our
users have root as their home, but the principle applies generally.
So I wondered, is there a global .profile where the environment variable
could be set? If it's only QShell and PASE, that's still not good enough.
So do we have to add it to a program that runs at IPL? We have that, but
I'm not sure we really WANT to do that.
Also, the knowledge center article on installing Java says that the
default is the one you have installed, if it's the only one - otherwise
it follows a hierarchy- 8 32bit, 8 64bit, 7 32bit, 7 64 bit, etc.
midrange.com
