Sun JVM & Jinitiator JVM on the same PC?

Hi can you help?
Can I run Sun JVM and Oracles Jinitiator JVM on the same W2K box, and point different apps at the different JVM's?
If this can be done, should I do it?
Thanks
Ben

I am happily using a plethora of JDK versions on the same boxes (both Linux and Windows).

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Install both 32 and 64 JVM on the same machine

Hello
I wanted to know if by installing both 32 and 64 JVM (on a 64 bit system, of course), would cause any damage. I have installed the 64 version, but Eclipse doesn't want to start at all, so i was hoping to make it work my installing a 32 bit version and making eclipse use it.
I am not sure how this will affect everything, because i will be using Jboss and Glassfish.

Then please post into the CodePlex issues
You may want to contact https://www.codeplex.com/site/users/view/kevinidzi and ask for a side by side support
Arthur My Blog

9i FORMS and SUN JVM 1.4.2_03

Hi,
We are planing to upgrade our IE browser with SUN JVM 1.4.2_03 virtual maching and our forms are not working when we access it from the update browser.
They are working fine with the IE browser and Microsoft JVM.
We are getting FRM -92050 error when we want to use SUN JVM and the same forms working fine with Microsoft JVM.
It is been causing business issues so any early help will be much appriciated.
Advanced Thanks,
Santosh

Hi,
actually I don't know what exact does cause the problems, but the last version of Java 1.4 Plugin I got to work is 1.4.1_02.
If you look at the Java panel of the Plugin you should find a couple of file not found messages spilled out.
Not sure if Java Plugin 1.4.2 already has been certified with Forms. I think that not.
Frank

Conflicts between jinitiator and sun jvm: is webstart a viable solution?

We currently have a problem where our users have to use multiple sessions in order to keep Sun's JVM from loading in the same IE instance that Jinitiator 1.3.1.21 is running. When jinitiator loads after java is already running, ie exits with a C++ exception, not very friendly to our users.
Our current solution instructs people to launch the browser in a separate memory space, but that is very tedious to explain to users. We have multiple vendor-provided fat java applets (one using jinitiator, one using sun jvm)
I've seen some messages on this forum regarding switching the applet into a full blown application running from webstart. What this would do for us is allow us to keep the two jvms separate when they are launched from webstart.
1) Does anyone else have this problem and have a different solution?
2) Is it possible from a jnlp file to indicate that jinitiator should be chosen to run the applet/application?
- from http://java.sun.com/j2se/1.5.0/docs/guide/javaws/developersguide/syntax.html#resources I see <j2se version="1.4+"/> can be picked to choose a jvm in order of preference.
Is there anything specific about jinititator that would allow it to be indicated on the version line? Has anyone done this?
Thanks,
Chris

The easiest solution would probably be to use the same JRE for all applications. Sun JRE 1.4.x is certified with most Forms versions, however refer to the Forms Client Statement of Direction for your Forms version.
Forms 6i
http://www.oracle.com/technology/products/forms/htdocs/clientsod_forms6i.html
Forms 9i
http://www.oracle.com/technology/products/forms/htdocs/clientsod_forms9i.html
Forms 10g (9.0.4)
http://www.oracle.com/technology/products/forms/htdocs/10g/clientsod_forms10g.html

JVM 1.3.1_06 Solaris 8 (sparc) multiple jvm's crash at the same time

Hi All,
I had multiple jvms crash all at the same time today morning, i was wondering if anyone had any similar issues with 1.3.1_06:
Only a few jvms left an hs_errpid.log: here is the one with the most info:
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 10 occurred at PC=0xff02f8f8
Function name=VerifyClassCodes
Library=/www/gmgwh/weblogic/jdk/j2sdk1_3_1_06/jre/lib/sparc/libjava.so
Current Java thread:
at java.lang.Shutdown.halt(Native Method)
at java.lang.Shutdown.exit(Shutdown.java:209)
at java.lang.Terminator$1.handle(Terminator.java:33)
at sun.misc.Signal$1.run(Signal.java:193)
at java.lang.Thread.run(Thread.java:479)
Dynamic libraries:
0x10000 /www/gmgwh/weblogic/jdk/j2sdk1_3_1_06/jre/bin/../bin/sparc/native_threads/java
0xff350000 /usr/lib/libthread.so.1
0xff340000 /usr/lib/libdl.so.1
0xff200000 /usr/lib/libc.so.1
0xff330000 /usr/platform/SUNW,Ultra-Enterprise/lib/libc_psr.so.1
0xfe400000 /www/gmgwh/weblogic/jdk/j2sdk1_3_1_06/jre/lib/sparc/hotspot/libjvm.so
0xff2d0000 /usr/lib/libCrun.so.1
0xff1e0000 /usr/lib/libsocket.so.1
0xff100000 /usr/lib/libnsl.so.1
0xff0d0000 /usr/lib/libm.so.1
0xff1c0000 /usr/lib/libmp.so.2
0xff090000 /www/gmgwh/weblogic/jdk/j2sdk1_3_1_06/jre/lib/sparc/native_threads/libhpi.so
0xff060000 /www/gmgwh/weblogic/jdk/j2sdk1_3_1_06/jre/lib/sparc/libverify.so
0xff020000 /www/gmgwh/weblogic/jdk/j2sdk1_3_1_06/jre/lib/sparc/libjava.so
0xfe7d0000 /www/gmgwh/weblogic/jdk/j2sdk1_3_1_06/jre/lib/sparc/libzip.so
0xfe3e0000 /usr/lib/locale/en_US.ISO8859-1/en_US.ISO8859-1.so.2
0xfe390000 /www/gmgwh/weblogic/jdk/j2sdk1_3_1_06/jre/lib/sparc/libnet.so
0xfe230000 /usr/lib/nss_files.so.1
0xfe160000 /www/gmgwh/weblogic/6.1/sp4/lib/solaris/libmuxer.so
0xfd0e0000 /usr/ucblib/libucb.so.1
0xfd090000 /usr/lib/libresolv.so.2
0xfd050000 /usr/lib/libelf.so.1
0xfafd0000 /app/oracle/product/8.1.7.4/lib/libocijdbc8.so
0xe1800000 /app/oracle/product/8.1.7.4/lib/libclntsh.so.8.0
0xfafb0000 /app/oracle/product/8.1.7.4/lib/libwtc8.so
0xfaf90000 /usr/lib/libsched.so.1
0xfaee0000 /usr/lib/libaio.so.1
Local Time = Wed Jan 19 09:09:31 2005
Elapsed Time = 22367
# The exception above was detected in native code outside the VM
# Java VM: Java HotSpot(TM) Client VM (1.3.1_06-b01 mixed mode)
#

hi there
i would direct my efforts to search for the culprit on who generated the signal (either a INT, TERM or HUP). The crash occurred is just but another side-effect. The VM received a shutdown signal and shld exit. Just that while exiting, it crashed.
There is this bug
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4904881
Which is pretty rare. I am not sure if you are encountering this bug but if u have a core, a pstack of the core should show > 2 threads with doing the signal shutdown.

THE SUN JVM IS NOT INSTALLED

when i open a page with java on it, it is not viewable. instead, i get this error message: THE SUN JVM IS NOT INSTALLED: CLICK TO INSTALL
so i click to install, but download is 108MB. i was told by a friend that all i need is a 14MB download, but dont know how to find it.
another friend told me that i need J2SDK, but that's a 165MB download. then i emailed Sun, and they said i just need JAVA VIRTUAL MACHINE and not J2SDK, but when downloading JAVA VIRTUAL MACHINE, i get JAVA RUNTIME ENVIRONMENT SE v 1.4.2_06 with 108MB.
other things i tried downloading:
-J2SE SDK which is supposed to be 14MB and i keep getting JAVA2RUNTIME ENVIRONMENT SE v1.4.2_06 which is 108mb.
j2re-1_4_2_xx-windows-i586-p-iftw.exe.
-J2SDK SE v 1.4.2_06 by clicking:
For Windows, choose "Windows Online Installation" for the quickest download and installation on a machine connected to the Internet. The default download size is 48.6MB, which is the maximum download. The size may decrease if features are deselected, to a minimum of 14.3MB.'
but what downloaded was not 14MB, it was 165MB.
I need java only for viewing certain parts of pages, nothing more, so 165MB seems crazy. i try to install only certain parts by checking 'do not install this now', but it gets installed anyway. there seems to be no way to only install a portion of the download. and the strangest thing is that i once had java, so where did it disappear to?
how can i just get the 14 mb download. i've tried EVERYTHING.
can anyone help? i've spent HOURS being challenged by this.

you just solved the problem, caffeine! you're the man (or gal) !!!!!
i clicked on: Online Installer and downloaded: http://jdl.sun.com/webapps/download/AutoDL?BundleId=9811
which is now (in properties on the install icon), noted as j2re-1_4_2_06-windows-i586-p-iftw 1.35 MB.
FYI: add/remove programs still says 108MB.
i'm still having a bit of trouble understanding this concept (could be my ADD) so to clarify...you saying that Add Remove Programs contains only an estimate of the size of an install program after installation, not the download size. i just assumed they were the same size. An install program is usually compressed. During installation, files inside the install program are uncompressed and copied to the appropriate locations on your hard drive , meaning that even tho i am downloading something of 1.35MB, those 1.35MB are compressed, and so when i uncompress them (by installing them on machine) the file size is increased? how can 1.35MB increase to approx. 108MB? and in the end, is this taking up 1.35MB or 108MB on my hard drive. (you say 108 is an estimate. but 1.35 is so different than 108, what kind of estimate is that?)
and finally,
- why do some friends have this noted as 14MB in THEIR add/remove programs.
- why do i have 1.35 and not 14MB (which is what most people have).
Most of the files for the JRE are copied to C:\Program Files\Java\j2re1.4.2_06. If you want to see the size of that folder and its contents right click on the folder (j2re1.4.2_06) and select properties. when i go to the actual folder, it says 33.7 MB. now i'm doubly confused as i thought it was 1.35MB.
By the way I believe you have downloaded and installed the JRE 1.4.2_06. yes i have, but i dont think i need the whole Java Runtime Environment just to view apps, do i? whenever i click on a download (like yours, for instance) the link leads to download of JRE 1.4.2_06. how can i get rid of what's not needed. again, i only need JAVA TO VIEW JAVA APPS.
are you exhausted yet??? (sorry, i really am trying to understand this).
thanks soooooooooo much caffeine!
deb

Can there be more than one JVM Running on the same machine

Can there be more than one JVM Running on the same machine.

Even JVM's of different versions (or vendors) can run on the same box at the same time.

Run two java apps in separate jvm's on the same machine?

At the command line, when you type:
java MyClass
and then type:
java MyClass
are the two programs (assuming neither terminated prior to the other's execution) is it running in a separate Java Virtual Machine or the same one?
And if they're running in the same JVM, is there a way to run the second program in a separate JVM for testing purposes even though they're on the same computer? (btw I'm running windows XP).

thanks all...just a quick follow up question. Are two
separate jvm's on the same computer a good
representation of two jvms running on separate
computers?Don't know what you mean by "a good representation."
They're two separate processes. For basic testing, not worrying about performance, etc., and if your code doesn't do anything special to treat two VMs on the same box differently than two VMs on separate boxes, it's probably a reasonable approximation.

Call to a remote object in the same JVM

Hi,
I want to implement a logging mechanism in my system. I'm planning to
write an rmi object and make it a start up class.
I wud like to know whether the calls to this start up class made by the
ejb instances and from the servlet engine in the same JVM, wud be rmi calls
or wud they be simple method calls.
Does weblogic detect the calls from the objects of the same jvm and
optimise them, or wud they be rmi calls only.
btw, i'm using weblogic 5.1
thx,
Manohar

Try:
initialNamingContext.rebind("single",
weblogic.rmi.server.UnicastRemoteObjcet.exportObject(obj)
"M. Manohar" wrote:
Hi Eduardo,
thx for ur reply.
I wud like to know how to make this "binding a stub".
wat i'm using is binding an object only.
Instantiating an object which implements the remote interface and binding
it to the JNDI tree by,
initialNamingContext.rebind("single", obj);
and ofcourse defining it as a start up class in the weblogic.properties
file.
Can u pls explain how to do "binding a stub"
thx,
Manohar
Eduardo Ceballos wrote in message <[email protected]>...
Presuming that the start up class binds itself into the jndi tree, then itonly depends on what you bind: binding a stub results in the RMI runtime
overhead; binding the object itself, results in the simpler function call
overhead.
"M. Manohar" wrote:
Hi,
I want to implement a logging mechanism in my system. I'm planning to
write an rmi object and make it a start up class.
I wud like to know whether the calls to this start up class made by the
ejb instances and from the servlet engine in the same JVM, wud be rmi
calls
or wud they be simple method calls.
Does weblogic detect the calls from the objects of the same jvm and
optimise them, or wud they be rmi calls only.
btw, i'm using weblogic 5.1
thx,
Manohar

Do the Cache, CacheStore, and CacheLoader all need to run in the same JVM?

do the Cache, CacheStore, and CacheLoader all need to run in the same JVM?
Any help is appreciated.
Thanks.

they can be in differnt DP with no problem.
Now question:
1-MOH multicast/Unicast? (Multicast MOH ONLY support G711, so that could explain changing the DP fixnig the problem)
[You can create a DP/region for MOH if multicast to talk G711 to everybody and the problem will get fix]
Please Kudos/rate if this help!

Setting Sun's JVM as the Default in IE

Hi,
I'm currently having trouble getting Internet Explorer to use Sun's JVM as the default JVM. Here's what happened:
1. I installed Sun's Java SDK 1.4.2.
2. I installed Visual Studio 6, which required (for some reason) that I update my JVM, so I did. (It did ask me if I wanted to update the JIT, and I selected No. Is this the problem?)
3. Java applets no longer run in IE.
4. I reinstall Java SDK 1.4.2, making sure to associate Sun's JVM as the default.
5. Java applets still don't run in IE.
I've tried multiple times reinstalling Java SDK, disassociating and reassociating IE from the plugin, etc, to no avail. I know Java still works, because if I directly specify to use Sun's JVM on a webpage it runs.
Does anyone know how to explicitly force Sun's JVM to be the default JVM for IE?
Thank you very much!

Hi,
---- Does anyone know how to explicitly force Sun's JVM to be the default JVM for IE?
In the plugin "ControlPanel \ Browser" select the IE radio button.
(I know you've tried this, but it seems to be the only way)
Make sure that in the Plugin's "ControlPanel \ Advanced" tab you have selected the proper location of the JRE.
In the Plugins "ControlPanel \ Basic" tab, select the "show console".
This should open the java console if your applet is loaded, so atleast you will know if the applet is being loaded or not.
Start a new browser after you associate the plugin with IE.
---- If you disassociate the plugin from IE, then inorder to get your applet to work with MS JVM use the following command
" javac -target 1.1 HelloWorld.java "
BTW - I hope you are testing a simple applet like hello world !?
regards
mqs
PS -
Your problem has got nothing to do with Visual Studio 6, nor the fact that it asked you to updgrade your JVM. ( IMHO visual studio will require MS JVM - but that is not the problem source here )

Running multiple weblogic servers on the same JVM

Is there a way to make Weblogic 7.0 and Weblogic 5.1 run on the same JVM? If so
what are the pros and cons?

I hope you also checked the IPCKEY (and all other identifiers of that kind)
in your ubbconfig file: they should all be different.
We have similar configurations running without any major difficulty.
One catch: very heavy IPC activity (due to errors in the application,
never because of heavy user load) in one environment sometimes overloads
the OS, resulting in hung applications in the other environments.
Regards
Frank
"Manoj SASIDHARAN" <[email protected]> wrote:
>
Hi Troy,
Here are a few tips:
1. Check the APPDIR values in both environments. They should point to
the appropriate
directories containing the Tuxedo server binaries for each environment.
Analyse
the values of APPDIR environment variable and also inside the UBBCONFIG
file.
2. Check the WSL address. Both environments should have different ports
for listening
to requests.
3. Check the WSNADDR environment variable at the client side. They should
point
to the appropriate WSL addresses.
HTH
regards
MS

Different browser windows share the same JVM

Hi there !
Running the same applet in different browser windows
(Netscape 4.72 - Plug-in 1.2.2) appears to use the same JVM. When I see the process list from the OS (Windows Task Manager) I see only one Netscape Process.
This is causing me a lot of problems, because the applet opens a socket connection with the server.
Since all applet instances running in different browser windows each one, are executing on the same JVM, all messages they send to the server goes through the SAME socket connection, turning the server in an inconsistent state.
Is it possible to start a completly new browser
process in order to have each applet instance running in a different JVM ?
TIA for any help

Not much help for you but I've had the same problem over here ... and we could find nothing to improve this.

Can I run more than one "main application" in the same JVM?

Hi,
We need a instance of JVM to run each standard application, Applet or Xlet?
Can I run more than one "main application" in the same JVM?
Thanks.

stdioo wrote:
Hi,
We need a instance of JVM to run each standard application, Ok
Applet or Xlet?You have no control over the first on a client machine. Presumably not the second either although I don't know what it is.
Can I run more than one "main application" in the same JVM?Application. Not applet.
You must have a class (code) to start each "application". To keep the environments clean from each other you can use a class loader.

What's the difference between MSJVM and SUN JVM

Sometimes I can run a program under MSJVM more stable (faster) than that under SUN JVM. Would you please tell me why or tell some difference between them?? Many thanks.
Edited by: ericfok on Dec 5, 2008 8:48 AM

vitallis wrote:
MSJVM has JNI ver. 1.1. My JNI wrapper generator also supports it. I wrote JNI code for MSJVM in 2000.No you didn't.
You either used the MS VM linkage format, which resembles (strongly) how C# does it or you were not using the MS VM but rather the Sun one.
The fact that MS Java supported third party dlls does not make it JNI. JNI was a specific specification on exactly how such support would be provided. And MS Java did not have it.
References, search for "microsoft"
[http://www.javaworld.com/javaworld/jw-10-1999/jw-10-jni.html]
The following from Microsoft itself asserting that JNI cannot be required part of java. Search for "JNI". Presumably if MS was claiming that it wasn't required then obviously they knew that it wasn't in fact in there.
[http://www.microsoft.com/presspass/legal/10-21copyright.mspx]

Sun JVM & Jinitiator JVM on the same PC?

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