How do I know Jvm is 32bit or 64bit ?

When I type "java -version" doesn't return this information.
Anyway I can check ?

This will return 32 or 64 bit:
String arch = System.getProperty("sun.arch.data.model");
System.out.println("This is a " + arch + "-bit Java installation");

Similar Messages

How to deploy agent from windows 32bit to 64bit

Hello,
I have installed oem grid on windows 2003 32bit. I have a few remote boxes that are 64 bit windows. How can I use oem grid on 32 bit to deploy agent on the remote 64 bit boxes? I can install agent on 64 bit boxes manually but I want to know how to deploy from 32 bit to 64 bit if possible? Thank you.

First, the bit version of the OEM OMS Host and the Target Agent Hosts is independent, i.e. you can have OMS on windows 32bit and have several 64bit target hosts, where you are running the 64bit agent.
Unless you have a lot of target hosts, I would recommend either manually installing the agents (mount a share with the installation files and run setup locally) or using the agentDownload.
Best regards,
Martin Decker
www.ora-solutions.net

How do I know which is the correct location of the JVM?

How do I know which is the correct location of the JVM? What do I add to my PATH environment variable? I'm trying to install Sybase ASE on my Sun Fire v480 SPARC box, but keep getting the below error...
*"A suitable JVM could not be found. Please run the program again using the option -is:javahome <JAVA HOME DIR>"*
So I did the following...
STEP 01) To confirm that Java is installed, I ran the java -version command. I received the following output...
bash-3.00# java -version
java version "1.5.0_17"
Java(TM) Platform, Standard Edition for Business (build 1.5.0_17-b04)
Java HotSpot(TM) Server VM (build 1.5.0_17-b04, mixed mode)
STEP 02) Then I tried to locate the location of where Java was installed...
bash-3.00# which java
/usr/bin/java
STEP 03) Then I tried to confirm if it was a symbolic link or not...
bash-3.00# ls -al /usr/bin/java
lrwxrwxrwx 1 root other 16 Jun 24 01:54 /usr/bin/java -> ../java/bin/java
STEP 04) The symbolic link doesn't seem to match any of the output below. Which is the correct location / path of Java (JVM / JRE)?
bash-3.00# find / -name java -print;
/usr/share/lib/java
/usr/share/java
/usr/bin/java
/usr/sfw/include/mozilla/java
/usr/include/firefox/java
/usr/jdk/instances/jdk1.5.0/bin/java
/usr/jdk/instances/jdk1.5.0/bin/sparcv9/java
/usr/jdk/instances/jdk1.5.0/jre/bin/java
/usr/jdk/instances/jdk1.5.0/jre/bin/sparcv9/java
/usr/jdk/packages/javax.help-2.0/doc/api/com/sun/java
/usr/java
/usr/apache/tomcat/webapps/tomcat-docs/catalina/docs/api/org/apache/naming/java
/usr/apache/tomcat55/classes/org/apache/naming/java
/usr/apache/jserv/docs/api/org/apache/java
/usr/j2se/bin/java
/usr/j2se/bin/sparcv9/java
/usr/j2se/jre/bin/java
/usr/j2se/jre/bin/sparcv9/java
/usr/appserver/samples/blueprints/adventure1.0.4/project/apps/activitysupplier/activitysupplier-ejb/src/java
/usr/appserver/samples/blueprints/adventure1.0.4/project/apps/airlinesupplier/airlinesupplier-ejb/src/java
/usr/appserver/samples/blueprints/adventure1.0.4/project/apps/bank/bank-ejb/src/java
/usr/appserver/samples/webservices/security/web/apps/clientCert/clientCert-share/src/java
/usr/appserver/samples/webservices/security/web/apps/clientCert/clientCert-war/src/java
/usr/appserver/samples/webservices/security/web/apps/xms/xms-client/src/java
/usr/appserver/samples/webservices/security/web/apps/xms/xms-share/src/java
/usr/appserver/samples/webservices/security/web/apps/xms/xms-war/src/java
/usr/appserver/samples/xml/apps/dom/src/java
/usr/appserver/samples/xml/apps/sax/src/java
/usr/appserver/samples/xml/apps/xslt/src/java
/opt/staroffice8/share/Scripts/java

I've been racking my head against the wall, but can't seem to find the solution... I've even installed the latest JRE (in a new location), but still seem to have the same problem. Please see the notes below...
I installed the latest JRE in /export/home/jvm/jre1.6.0_17/
bash-3.00# /export/home/jvm/jre1.6.0_17/bin/java -version
java version "1.6.0_17"
Java(TM) SE Runtime Environment (build 1.6.0_17-b04)
Java HotSpot(TM) Server VM (build 14.3-b01, mixed mode)
bash-3.00# PATH=/export/home/jvm/jre1.6.0_17/bin:$PATH
bash-3.00# export PATH
bash-3.00# echo $PATH
/export/home/jvm/jre1.6.0_17/bin:/usr/sbin:/usr/bin
bash-3.00# JAVA_HOME=/export/home/jvm/jre1.6.0_17/bin
bash-3.00# export JAVA_HOME
bash-3.00# echo $JAVA_HOME
/export/home/jvm/jre1.6.0_17/bin
bash-3.00# env
HZ=100
LC_MONETARY=en_CA.UTF-8
TERM=xterms
SHELL=/sbin/sh
LC_NUMERIC=en_CA.UTF-8
OLDPWD=/export/home/jvm/jre1.6.0_17
PATH=/export/home/jvm/jre1.6.0_17/bin:/usr/sbin:/usr/bin
MAIL=/var/mail/root
LC_MESSAGES=C
LC_COLLATE=en_CA.UTF-8
PWD=/export/home/jvm/jre1.6.0_17/bin
JAVA_HOME=/export/home/jvm/jre1.6.0_17/bin
EDITOR=vi
TZ=Japan
SHLVL=1
HOME=/
LOGNAME=root
LC_CTYPE=en_CA.UTF-8
LC_TIME=en_CA.UTF-8
_=/usr/bin/env
bash-3.00# cd /cdrom/disc1050709/
bash-3.00# ./setup -console
InstallShield Wizard
Initializing InstallShield Wizard...
Searching for Java(tm) Virtual Machine...
.........................A suitable JVM could not be found. Please run the program again using the option -is:javahome <JAVA HOME DIR>
Is there something I'm missing?
Thank you

How does jconsole know of all monitored JVMs in system?

When you run jconsole, the tab named "local" lists JVMs running and their PIDs. By what mechanism is it able to 'know' which JVMs are running that have been started with the arguments that enable JMX management?
Does jconsole connect to JVMs or to MBeanServers? (Assume each JVM has multiple MBeanServers, and each MBeanServer has multiple domains.)
Also, what's the difference between using the 'remote' and 'advanced' tabs to connect to a JVM? They both have usernames and passwords, but while the 'remote' tab has a host and port, the 'advanced' tab has a URL that contains a host and port within it. So what's the difference - when would you pick one method of connection over another?
Thanks.

If jconsole connects to MBeanServers rather than
JVMs, then how can it tell the difference between
multiple MBeanServers that have been started by a
single JVM?JConsole connects to a given JMX connector server which is associated with a given MBeanServer at creation time.
For example, if I have a simple application (i.e. one
JVM) that starts up two MBeanServers in its main
method, using
MBeanServerFactory.createMBeanServer(name). To start
the application, you run the JVM with the
com.sun.management.jmxremote and
com.sun.management.jmxremote.port variables.
How will jconsole know to differentiate between the
two MBeanServers? After all, there's only one JVM -
and it's been started with only one port number.In your example JConsole will not see any of your MBeanServers. It'll see the platform MBeanServer which is the one used by the out-of-the-box management agent.
The next question I have is regarding the JVM - does
any JVM that's started locally show up in the "local"
tab of JConsole (because the JVM is always
instrumented by default - true?), or does it only
appear if you run it with the
com.sun.management.jmxremote variable?The new Attach API in JDK 6 allows JConsole 6 to show all the JVMs running on the local machine although you will only be able to connect to the ones running on JDK 6 (and JDK 5.0 if started with the com.sun.management.jmxremote or com.sun.management.jmxremote.port system properties).
JConsole 5 only shows the JVMs running on JDK 5.0 and started with the com.sun.management.jmxremote or com.sun.management.jmxremote.port system properties.
Have a look at the link below for more detailed info:
http://java.sun.com/javase/6/docs/technotes/guides/management/index.html
Regards,
Luis-Miguel Alventosa
Java SE JMX/JConsole development team
Sun Microsystems, Inc.
http://blogs.sun.com/lmalventosa/

How to know oracle dump is 32bit or 64bit

Hi All,
I Want know Oracle Database Dump is 32bit or 64bit. how can i find can you help me on this

Hi,
I Want know Oracle Database Dump is 32bit or 64bit. how can i find can you help me on thiswhy don't you try by command "file <file_name>" in unix flavors environments.
If you trying to check the dump file which got generated from the database is whether 32 bit or 64 bit, then you it would be difficult to find out. Try to check the log of dump or database environment from where it got generated.
- Pavan Kumar N

How can we know that JVM is running in our system?

how can we know that JVM is running in our system?

On a *dows system you can use pslist and the like:
http://www.sysinternals.com/Utilities/PsTools.html
http://www.sysinternals.com/Utilities/PsList.html

How to identify the installed Weblogic Server and JDK are 32bit or 64bit?

Hi everyone,
I have a question ~
Both Weblogic Server and JAVA JDK are installed on the server already, but I only know the Weblogic Server is 10.3.4.0 and JAVA JDK version is 1.6.0_25.
I know the 64bit Weblogic Server installation file is a wlsXXXX_generic.jar package and 64bit JAVA JDK needed also.
But, since the Weblogic installed already, there are no such installation files on the Linux Server now.
I have tried the "java -version" for java version and check the Weblogic version from Weblogic console.
How to identify the installed Weblogic Server and JDK are 32bit or 64bit with Linux command? Or is there any way to check it?

What you can try to do is use WLST (or an MBean browser, such as JConsole or JRockit Mission Control) and connect to the adminserver.
For example when using WLST:
# set the environment by using setWLSEnv.sh (located in the ${WL_HOME}/server/bin directory).
# start WLST by using: java weblogic.WLST
# connect to the adminserver
connect('adminusername','adminpassword');
# change to the serverruntime environment
serverRuntime();
# show the attributes
ls();
# Here an attribute is shown called WebLogicVersion that shows the version of WebLogic
-r-- WeblogicVersion WebLogic Server 10.3.5.0 Fri Apr 1 20:20:06 PDT 2011 1398638
# Note that this does not show if is 32 bits or 64 bits to retrieve this information you have obtain the JVM version
# change the directory
cd('JVMRuntime/AdminServer');
# show the attributes
ls();
-r-- Version R28.0.1-21-133393-1.6.0_20-20100512-2126-linux-x86_64
# when you have something like x86 at the you are running a 32 bit version, if you have something like x86_64 you are running a 64 bits versionAs mentioned above you can also retrieve this information by using a MBean browser.

1.1 vs 1.4 : SDK API's and how they relate to JVM versions

Hey all,
I'm hoping some Java expert/guru/enthusiast can help me understand a little (OK, a lot) more about designing applets for backward compatibility .
My situation is that I need to design applets which are compatibile with the built-in Java features of Internet Explorer and Netscape 6.x - which appears to be JVM versions 1.1.4. I know going with Java2, JDK 1.4, web start whatever would be MUCH better, and will do whatever I can to push clients to plug-in & non-MS browsers, etc. etc., but believe me, supporting MS JVM 1.1.4 is a requirement...
...So my question is, are there any things added to the JDK since 1.1.4 that can be used in a 1.1 JVM? If so, how would I be able to determine what those things are without testing them all?
Like could i take java source for some 1.4 SDK code and add them to a 1.1 project? how do I know if the api requires a new intrinsic or not? (native keyword?)
Also, I'm using the 1.4 SDK compiling for 1.1 targets, aside from the 1.4 SDK api's & packages, will there be any code I can write that will happily compile for a 1.1 target but then mysteriously fail when testing? What I mean is, if I use a new language feature or compiler feature since 1.1, will the 1.4 compiler's byte-code still be 1.1 compatible, or will there be some potential run-time problems?
thanks

As a rule of thumb, avoid all swing components (just use awt) because they are only available in 1.2. You can use all enhancements and bug fixes to awt components that are available in 1.4 (even 1.5).
;o)
V.V.

How to change system Window 7 32BIT to Window 64BIT

Please help. My system is:
System Directory C:\Windows\system32
Processor Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s)BIOS Version/Date LENOVO 2SKG28A, 9/4/2007SMBIOS Version 2.5Windows Directory C:\WindowsSystem Directory C:\Windows\system32.
I have 2 version of Window 7 32BIT and 64BIT. I called Lenovo test support and they said I can't install Window 7 64BIT since my system is 32BIT. But I read in the forum someone can do it.
I would like to know how?
Thanks

Hi, LBCupertino
What they mean is you can't just switch it to 64bit. You will need to save what ever you need, documents, pictures, music, etc... It requires you to install 64bit from the CD, which will wipe everything you have on it now.
IT Specialist and Consultant
Lenovo Tablet Evangelist
Current Machines: IdeaCentre A300, ThinkPad Tablet, IdeaPad U410, and Yoga 3 Pro Touch
Deutsche Community Comunidad en Español
Lenovo - the latest in DOtabs, DOpads, DOcentre's, DOstations and DOservers!

How do I know which is the correct location of the JRE?

How do I know which is the correct location of the JRE / JVM? What do I add to my PATH environment variable? I'm trying to install Sybase ASE on my Sun Fire v480 SPARC box, but keep getting the below error...
"A suitable JVM could not be found. Please run the program again using the option -is:javahome <JAVA HOME DIR>"
So I did the following...
STEP 01) To confirm that Java is installed, I ran the java -version command. I received the following output...
bash-3.00# java -version
java version "1.5.0_17"
Java(TM) Platform, Standard Edition for Business (build 1.5.0_17-b04)
Java HotSpot(TM) Server VM (build 1.5.0_17-b04, mixed mode)
STEP 02) Then I tried to locate the location of where Java was installed...
bash-3.00# which java
/usr/bin/java
STEP 03) Then I tried to confirm if it was a symbolic link or not...
bash-3.00# ls -al /usr/bin/java
lrwxrwxrwx 1 root other 16 Jun 24 01:54 /usr/bin/java -> ../java/bin/java
STEP 04) The symbolic link doesn't seem to match any of the output below. Which is the correct location / path of Java (JVM / JRE)?
bash-3.00# find / -name java -print;
/usr/share/lib/java
/usr/share/java
/usr/bin/java
/usr/sfw/include/mozilla/java
/usr/include/firefox/java
/usr/jdk/instances/jdk1.5.0/bin/java
/usr/jdk/instances/jdk1.5.0/bin/sparcv9/java
/usr/jdk/instances/jdk1.5.0/jre/bin/java
/usr/jdk/instances/jdk1.5.0/jre/bin/sparcv9/java
/usr/jdk/packages/javax.help-2.0/doc/api/com/sun/java
/usr/java
/usr/apache/tomcat/webapps/tomcat-docs/catalina/docs/api/org/apache/naming/java
/usr/apache/tomcat55/classes/org/apache/naming/java
/usr/apache/jserv/docs/api/org/apache/java
/usr/j2se/bin/java
/usr/j2se/bin/sparcv9/java
/usr/j2se/jre/bin/java
/usr/j2se/jre/bin/sparcv9/java
/usr/appserver/samples/blueprints/adventure1.0.4/project/apps/activitysupplier/activitysupplier-ejb/src/java
/usr/appserver/samples/blueprints/adventure1.0.4/project/apps/airlinesupplier/airlinesupplier-ejb/src/java
/usr/appserver/samples/blueprints/adventure1.0.4/project/apps/bank/bank-ejb/src/java
/usr/appserver/samples/webservices/security/web/apps/clientCert/clientCert-share/src/java
/usr/appserver/samples/webservices/security/web/apps/clientCert/clientCert-war/src/java
/usr/appserver/samples/webservices/security/web/apps/xms/xms-client/src/java
/usr/appserver/samples/webservices/security/web/apps/xms/xms-share/src/java
/usr/appserver/samples/webservices/security/web/apps/xms/xms-war/src/java
/usr/appserver/samples/xml/apps/dom/src/java
/usr/appserver/samples/xml/apps/sax/src/java
/usr/appserver/samples/xml/apps/xslt/src/java
/opt/staroffice8/share/Scripts/java

I've been racking my head against the wall, but can't seem to find the solution... I've even installed the latest JRE (in a new location), but still seem to have the same problem. Please see the notes below...
I installed the latest JRE in /export/home/jvm/jre1.6.0_17/
bash-3.00# /export/home/jvm/jre1.6.0_17/bin/java -version
java version "1.6.0_17"
Java(TM) SE Runtime Environment (build 1.6.0_17-b04)
Java HotSpot(TM) Server VM (build 14.3-b01, mixed mode)
bash-3.00# PATH=/export/home/jvm/jre1.6.0_17/bin:$PATH
bash-3.00# export PATH
bash-3.00# echo $PATH
/export/home/jvm/jre1.6.0_17/bin:/usr/sbin:/usr/bin
bash-3.00# JAVA_HOME=/export/home/jvm/jre1.6.0_17/bin
bash-3.00# export JAVA_HOME
bash-3.00# echo $JAVA_HOME
/export/home/jvm/jre1.6.0_17/bin
bash-3.00# env
HZ=100
LC_MONETARY=en_CA.UTF-8
TERM=xterms
SHELL=/sbin/sh
LC_NUMERIC=en_CA.UTF-8
OLDPWD=/export/home/jvm/jre1.6.0_17
PATH=/export/home/jvm/jre1.6.0_17/bin:/usr/sbin:/usr/bin
MAIL=/var/mail/root
LC_MESSAGES=C
LC_COLLATE=en_CA.UTF-8
PWD=/export/home/jvm/jre1.6.0_17/bin
JAVA_HOME=/export/home/jvm/jre1.6.0_17/bin
EDITOR=vi
TZ=Japan
SHLVL=1
HOME=/
LOGNAME=root
LC_CTYPE=en_CA.UTF-8
LC_TIME=en_CA.UTF-8
_=/usr/bin/env
bash-3.00# cd /cdrom/disc1050709/
bash-3.00# ./setup -console
InstallShield Wizard
Initializing InstallShield Wizard...
Searching for Java(tm) Virtual Machine...
.........................A suitable JVM could not be found. Please run the program again using the option -is:javahome <JAVA HOME DIR>
Is there something I'm missing?
Thank you

How to set JDeveloper JVM version

Can you please let me know how to set JDeveloper JVM version?

I'm going to assume you mean you want to "compile against"?
in menu ->Application->progject properties -> Compiler->use custom settings->customer setting->change JDK Version Compatability by selecting the source and class files to be used and generated respectively.
use "Helpful" or "Correct" to give points, else let us know you need some more help

How to set the JVM Startup Options?

Hi,
I want to know how to set the JVM Startup Options...
The idea is, I want to test how the remote clients can access an EJB that is running on a different machine... Remote client here means, I have a java client application that runs on one machine and that contacts an EJB thats running on a different machine... I posted this question in J2EE forum and I got this reply...
If you need to access EJB components that are residing in a remote system other than the system where the application client is being developed, set the values for the Java Virtual Machine startup options:
jvmarg value = "-Dorg.omg.CORBA.ORBInitialHost=${ORBhost}"
jvmarg value = "-Dorg.omg.CORBA.ORBInitialPort=${ORBport}"
Now how to set the JVM Startup Options? I know my server ORBHost Name and the ORBPort..
Anybody to help !!!
Thanks in advance,
Karthik

java -Dorg.omg.CORBA.ORBInitialHost=${ORBhost} -Dorg.omg.CORBA.ORBInitialPort=${ORBport} <the main class>
That should do it..

I want to buy windows 7 to download on my iMac but don't know if I need a 32bit or 64bit for parallels

How do i know which,32bit or 64bit windows7 to buy for my iMac with parallels desktop. I just got my 21.5" iMac Dec. 2011 .Intel 2.5ghz but I don't see any 32bit or 64bit info for the system anywhere or if it matters.

Home/Pro 32-bit address 3.5 GB memory.
Home 64-bit Pro addresses 16 GB memory.
Pro 64-bit addresses 192 GB memory. And 64-bit Pro has XP mode just in case you need it.
You dedicate a certain amount of memory to Parallels VM, and you have a machine that can install at least 16 GB memory. So you can actually dedicate 8 GB RAM, and thus exceed and 32-bit Windows OS ability.
In short ... to avoid re-buying Windows 7 in the future, and get XPmode, and address more than 3.5 GB RAM any time I want to ... buy 64-bit Pro once.

When I login I get a message "aosnotifyd wants to use your confidential information stored in "my name" in your keychain." How do I know if it is safe to allow this? Can anyone advise please?

Every time I login I get the message "aosnotifyd wants to use your confidential information stored in "my name" in your keychain." How do I know if it is safe to allow this? Can anyone advise please?

My immediate reaction is to deny.
Have you downloaded or installed any application that may relate to the abbreviation AOS? It may not necessarily be the application's name, could be the developer or distributor.
As it's occuring at log-in, go to System Preferences > Accounts > your account > Login Items and look for a related item. If there's one there, right-click (or ctrl click) on it and select Reveal in Finder. That will show you where the originator of the item is on your system and should give you more of a clue as to what it is.
I'd remove the item from login items anyway (highlight and click the minus sign at the bottom of the window). There shouldn't be anything trying to use your keychain info to notify anyone.

How do I know external hard drive is working?

Sorry for the simplistic nature of the questions but here goes:
Purchased a Toshiba external hard drive - plugged it in and Time Machine asked a few questions and soon it asked if I wanted to back up my internal hard drive.
After 40 plus minutes the task was completed - it stopped doing whatever it was doing - that much I'm certain.
How do I know the Toshiba is continuing to back up material? The light on the Toshiba is 'on' at times and 'off' on other times - so it's backing material up when the light is on??? Automatically, on its own?
Time Machine and/or the Toshiba do not appear to have any schedule for routine back-up (such as one would find on an anti-virus application), is there a way to schedule a backup?
Under Time Machine preferences it shows the Toshiba as the external disk. Plus I just noticed that it states the next back up will be 8:34 am today - 22 minutes from right now. What an odd time and it isn't a time I selected, at least I don't think so!
How do I access the Toshiba to see what, if anything, it has backed up?
Finally, assuming the external has backed up all the important data and should my (brand new - but that's another story) hard drive crash, how do I get the computer to ignore the damaged internal hard drive and start using the Toshiba?
As you can tell these question would be easily answered by most anyone with a modicum of computer knowledge but for me, thank goodness for Apple Discussion!
Thanks in advance.
Bob

See > Setting up Time Machine backups using an external drive
From Here > http://support.apple.com/kb/HT1427
More Info > Time Machine Tutorial
Bob13018 wrote:
... how do I get the computer to ignore the damaged internal hard drive and start using the Toshiba
This is Not how TM works... It is not a Bootable Clone... Read Here...
Time Machine vs. Clones and Archives

How do I know Jvm is 32bit or 64bit ?

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