Re: need multiple jobs to use same JVM

Hi Alex,
I hate to be the bearer of bad news but there is simply no way to do what
you are asking.  There are alot of reasons why you can't.  One thing is
system pointers.  An as400 system pointer is scoped to the job and thus
can't be used across multiple jobs.  We had the same problem with wanting to
have multiple jobs all use the same socket.  In that instance we ended up
having a server jjob with the socket and hte rpg apps all talked to teh
server job with data ueues.

Your best bet is David Gibbs recommedation (tcp server job) which will
perform the best or data queues which are easier to write and automatically
loadbalance but perform anywhere from the same as TCP to adequate depending
on what you want to do.

regard,s
Glen
----- Original Message -----
From: "Alex Garrison" <agarrison@xxxxxxxxxxxx>
To: <java400-l@xxxxxxxxxxxx>
Sent: Wednesday, February 19, 2003 10:59 AM
Subject: need multiple jobs to use same JVM


> Lets say we have a standard interactive green-screen environment in v5r1
> with a small twist: some of the RPG code calls Java using JNI.  My
> understanding so far is that each interactive job would get its own JVM
> (started up the first time each interactive job accesses the RPG code that
> uses JNI.  This poses a big scaleability issue since we cant have 500 JVMs
> floating around.
>
> Is there a way to specify that all the interactive jobs use the same JVM?
>
> If not is there a way to specify which JVM a given interactive job should
> attach to?  For example, I am wondering if
> the RPG JNI function JNI_GetCreatedJavaVMs can return all the JVMs on the
> system or just the one attached to the current job?
>
> How have you gotten around this issue?
>
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