JAVA for embedded systems: just a myth ?

Hi,
I'm relatively new to JAVA (a year or so), and so far I'm fascinated. I've only developed for PC using J2SE, although I'heard a lot of hipe about J2ME, which I guess is the JAVA for embedded systems (correct me if I'm wrong here).
I worked a lot with microcontrollers, and I think it would be really nice to program them using JAVA. I googled serched for JAVA enabled embedded systems, but I couldn't find anything.
Anyway, this morning I got to this site and find a very interesting article, which I'd like to share with you and hear your opinions about the 5th myth.
The link is: http://www.chipcenter.com/knowledge_centers/embedded/todays_feature/showArticle.jhtml?articleID=10300909
Cheers!!

>... very interesting article, which I'd like to share with
you and hear your opinions about the 5th myth.
Very interesting. I'd always wondered what happened to the Java chips...
Here's a thought, and an associated question, if any of you reading this happen to be up on modern processor architecture...
What about microcode? Back in school (decades ago) I learned a bit about microcode, which was like very simple, low-level instructions that a processor would "execute" to execute each assembly/machine language instruction. The idea was that if you needed to tweak the instruction set of a processor, you could rewrite its microcode. Seems like this would lend itself nicely to implementing a JVM in "hardware"... The question is, do they even use microcode anymore? With the pursuit of speed and optimization, I wonder if they didn't abandon it and go with highly specialized/optimized circuits instead...
Back to the original question -- it would be somewhat ironic if Java weren't available for embedding systems. The original target system was set-top boxes, etc. I've tried a few JVMs on my Palm -- they're getting there!

Similar Messages

Crypto libraries for embedded systems

Hi, I need some crypto libraries for my Xlet running on a MHP receiver. I need that these libraries can use the public key extracted from a certificate and encrypt a digest using that public key. I can't use javax.crypto because it doesn't work on a limited MHP 1.0.2 receiver. I need something studied for it. Thank you!!!
Edited by: fabio80s on Oct 23, 2009 3:24 AM

>... very interesting article, which I'd like to share with
you and hear your opinions about the 5th myth.
Very interesting. I'd always wondered what happened to the Java chips...
Here's a thought, and an associated question, if any of you reading this happen to be up on modern processor architecture...
What about microcode? Back in school (decades ago) I learned a bit about microcode, which was like very simple, low-level instructions that a processor would "execute" to execute each assembly/machine language instruction. The idea was that if you needed to tweak the instruction set of a processor, you could rewrite its microcode. Seems like this would lend itself nicely to implementing a JVM in "hardware"... The question is, do they even use microcode anymore? With the pursuit of speed and optimization, I wonder if they didn't abandon it and go with highly specialized/optimized circuits instead...
Back to the original question -- it would be somewhat ironic if Java weren't available for embedding systems. The original target system was set-top boxes, etc. I've tried a few JVMs on my Palm -- they're getting there!

Bonjour for embedded system

Hi,
I have followed the steps provided in the install file to intilize the bonjour for embedded system . first I generated the shared ib for bonjour source code for my embedded system and then I initilized it by calling mDNS_Init api.
Since I just need to browse at my client , I called the browsing fucntion as per dns_sd.h , but I got the below error .
mDNS_StartBrowse: mDNSPlatformRawTime went backwards by 1669225997 ticks; setting correction factor to 1669225997
11-17 00:28:08.481: D/bonjour(1280): mDNS_StartBrowse: mDNS_Unlock: ERROR! m->timenow aready zero
11-17 00:28:08.481: D/bonjour(1280): DNSServiceBrowse("_appl._tcp.", "local.") failed: mDNS_StartBrowse (-65546)
11-17 00:28:08.490: I/System.out(1280): DNSService call failed -65546
11-17 00:32:24.720: E/ThrottleService(161): problem during onPollAlarm: java.lang.IllegalStateException: problem parsing stats:
I hope apple forum will help for this problem ..

I am able to fix the above issue , but subtype search on the embedded systems throws an erros
ex if type="_book._tcp.,author" throws bad param error but same thing works on the linux pc . Can some tell me how to pass the subtypes in embedded application

Is it possible to create a program for embedded system

Is it possible to create a program for embedded system?

Yes. Many solutions.
1 = http://jcx.systronix.com/
2 = http://www.harbaum.org/till/nanovm/index.shtml (see links to Asuro)
And many more but I'm too lazy too look them for you ...
Dan

Compiling linux for embedded system using Arch.

Hi. I build the vanilla kernel for an embedded system using special buildsystem. This buildsystem calls
make INSTALL_MOD_PATH=embedded_fs_path modules_install
The kernel's Makefile installs the modules to embedded_fs_path/lib/modules/$(KERNELRELEASE) and calls /sbin/depmod -b embedded_fs_path $(KERNELRELEASE).
This operation fails under Archlinux because /sbin/depmod is a part of kmod and it expects that modules are placed to /usr/lib/ instead of /lib, so it tryes to make dependencies in embedded_fs_path/usr/lib/modules/$(KERNELRELEASE) instead of embedded_fs_path/lib/modules/$(KERNELRELEASE).
What is correct solution for this issue? I can pass DEPMOD variable to kernel's Makefile to use something else instead of /sbin/depmod, but i don't know value of this variable should be.
Is there any command line options for kmod to force using /lib instead of /usr/lib? As I've seen in kmod sources, there aren't.
Is there any package in repositiries or AUR or somewhere else which provides an application that behaves the same way as old depmod with /lib/ modules location?
Thanks.

tavianator wrote:Fedora Core 7? Wow, that's ambitious. I'd suggest building in a virtual machine or chroot with the target system installed.
centos is probably worse. They're still on 2.6.18 as far as i can tell.
I wanted to avoid chroot/virtual machine (ran one of those for a while). The reason is that my current development build is the same as what is delivered. I don't want to lose that....having to deal with different compilers, libraries, etc can be a pain.
I'll also look into whether or not I can install a "glibc-compat" type package that could alleviate the loader.
Here's the telling part:
the new exectuble:
$ file <executable>
<executable>: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.27, dynamically linked (uses shared libs), for GNU/Linux 2.6.27
the old executable:
$ file <executable>
<executable>: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.8
Okay....issue seems to be in the glibc PKGBUILD.
it has the line:
--enable-kernel=2.6.27 \
passed to glibc configuration.
Causes big time problems for creating compatible packages.
Last edited by bnolsen (2011-05-05 21:27:20)

LabView for Embedded Systems

Hi all.
I intend to develop an Embedded System, based on an ARM9 MCU, and I´ve been wondering if LabView could be used to create stand alone applications to run on such a system.
I can use Windows CE, or Linux on my system, but I prefer Linux.
Can I develop applications directly on LabView for Linux?
What minimal resources would be needed to run an average LabView application on such a system, like memory capacity, minimal MCU clock speed, etc?
I´ll apretiate any comments, since I have no ideia about what can be done with LabView out
of the PC universe.
Thanks alot.

You can run LV EXEs (not the development environment) on CE if you buy the LV PDA module. Note that applications built using this lack features regular LV applications have.
I remember some threads dealing with the minimum necessary to run LV on linux. If I remember correctly, the basic idea is there are a few official linux versions supported and that anything outside those you will have to experiment on your own. Here's one example. You can try looking for more.
If you want, official requirements can probably be found in the main LV linux page (whereever that is).
Try to take over the world!

Embedded system programming in java

I want to know how to do embedded system programming in java.
can anyone give some sample programs and tell me nice book for embedded programming in java

First take a look at Embedded Server forum (http://forum.java.sun.com/forum.jsp?forum=46) and/or OSGi (http://www.osgi.org)

Java.lang.SecurityException: Authentication for user system denied in realm wl_realm Error.

          Getting this security exception when trying to pull a message from one weblogic
          instance JMS queue, and sending the message (via a MDB) to another machine's JMS
          queue.
          Ex. Here's the scenario.
          Two Windows2000Server machines,
          one at ip ... xxx.xxx.x.16,
          second machine at ... xxx.xxx.x.17.
          MDB pulls message off of a JMS queue on 16. MDB sends the message to .17 box.
          ON the .17 machine (the receiver) I get the following exception
          weblogic.transaction.internal.CoordinatorImpl@31406b>
          java.lang.SecurityException: Authentication for user system denied in realm wl_realm
               at weblogic.security.acl.Realm.authenticate(Realm.java:212)
               at weblogic.security.acl.Realm.getAuthenticatedName(Realm.java:233)
               at weblogic.security.acl.internal.Security.authenticate(Security.java:125)
               at weblogic.security.acl.internal.Security.verify(Security.java:87)
               at weblogic.rmi.internal.BasicRequestHandler.handleRequest(BasicRequestHandler.java:76)
               at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:17)
               at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
               at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          ON the sending maching .16, I get the following exception.
          ####<Apr 3, 2002 9:46:24 AM CST> <Error> <RJVM> <testweblogic> <OptiSoftAppServer>
          <ExecuteThread: '96' for queue: 'default'> <> <> <000000> <Unsolicited error response
          for: '-1'>
          The messages appear to show up on the destination machine, but are these error
          messages valid, or just bogus?
          Thanks,
          Eric.


Why is that? Your suggestion worked but I don't understand why.
          When our MDB on machineA did the JNDI lookup to MachineB we set the
          credentials to a valid user/password on MachineB.
          My speculation: Since the MDB on machineA is already in a transaction
          any other JNDI calls use the credentials for the MDB's transactions,
          ignoring any other credentials we might try to set explicitly. If my
          speculation is correct then that would explain by the passwords for the
          user "system" would have to be the same between servers.
          Is there a good place to read up on this?
          Thanks
          Tom
          Rajesh Mirchandani wrote:
          > Make sure you have the same system password for the 2 instances of WLS on seperate boxes.
          >
          > Tom Barnes wrote:
          >
          >
          >>Or post to the EJB newsgroup (which "owns" MDBs).
          >>
          >>Tom Barnes wrote:
          >>
          >>
          >>>I think there is a username/password field configurable in the MDB descriptor that
          >>>might help here??? Other than that, I suggest posting to the security newsgroup.
          >>>
          >>>Tom
          >>>
          >>>Eric Babin wrote:
          >>>
          >>>
          >>>>Getting this security exception when trying to pull a message from one weblogic
          >>>>instance JMS queue, and sending the message (via a MDB) to another machine's JMS
          >>>>queue.
          >>>>
          >>>>Ex. Here's the scenario.
          >>>>
          >>>> Two Windows2000Server machines,
          >>>> one at ip ... xxx.xxx.x.16,
          >>>> second machine at ... xxx.xxx.x.17.
          >>>>
          >>>> MDB pulls message off of a JMS queue on 16. MDB sends the message to .17 box.
          >>>>
          >>>>
          >>>>ON the .17 machine (the receiver) I get the following exception
          >>>>
          >>>>weblogic.transaction.internal.CoordinatorImpl@31406b>
          >>>>java.lang.SecurityException: Authentication for user system denied in realm wl_realm
          >>>> at weblogic.security.acl.Realm.authenticate(Realm.java:212)
          >>>> at weblogic.security.acl.Realm.getAuthenticatedName(Realm.java:233)
          >>>> at weblogic.security.acl.internal.Security.authenticate(Security.java:125)
          >>>> at weblogic.security.acl.internal.Security.verify(Security.java:87)
          >>>> at weblogic.rmi.internal.BasicRequestHandler.handleRequest(BasicRequestHandler.java:76)
          >>>> at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:17)
          >>>> at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
          >>>> at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          >>>>
          >>>>ON the sending maching .16, I get the following exception.
          >>>>
          >>>>####<Apr 3, 2002 9:46:24 AM CST> <Error> <RJVM> <testweblogic> <OptiSoftAppServer>
          >>>><ExecuteThread: '96' for queue: 'default'> <> <> <000000> <Unsolicited error response
          >>>>for: '-1'>
          >>>>
          >>>>The messages appear to show up on the destination machine, but are these error
          >>>>messages valid, or just bogus?
          >>>>
          >>>>Thanks,
          >>>>
          >>>>Eric.
          >>>>
          >
          > --
          > Rajesh Mirchandani
          > Developer Relations Engineer
          > BEA Support
          >
          >
          >

Java.lang.SecurityException: Authentication for user system denied in realm wl_realm

I am experiencing this error when a servlet or JSP is preloaded on the web
server and the init method of the preloaded item results in a call to the
app server. If I don't preload and then manually invoke the JSP or servlet
after the web server completely loads the call to the app server does not
produce the exception. The only security differences between the web and
app servers are the console and system passwords. I can fix the problem by
making the passwords (system and console) the same across the board, but
find it hard to believe that this is the true solution. I would prefer
sticking with the default security settings.
I've poured through hundreds of messages. I can find similar problems but
not this exact problem.
Any ideas would truly be appreciated!
More information:...
App and Web server are both wls 6.1.1.0 running on the same SUN Solaris box.
Both are using the basic, out of the box, security.
The App server has SSL disabled.
The exception reported in the app server's log is:
java.lang.SecurityException: Authentication for user system denied in realm
wl_realm
at weblogic.security.acl.Realm.authenticate(Realm.java:212)
at weblogic.security.acl.Realm.getAuthenticatedName(Realm.java:233)
at
weblogic.security.acl.internal.Security.authenticate(Security.java:125)
at weblogic.security.acl.internal.Security.verify(Security.java:87)
at
weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:235)
at
weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:2
2)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
The exception reported in the web server's log is:
java.lang.SecurityException: Authentication for user system denied in realm
wl_realm
at
weblogic.rmi.internal.BasicOutboundRequest.sendReceive(BasicOutboundRequest.
java:85)
at
weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java
:255)
at
weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java
:222)
at weblogic.rmi.internal.ProxyStub.invoke(ProxyStub.java:35)
at $Proxy54.lookup(Unknown Source)
at
weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:323)
at javax.naming.InitialContext.lookup(InitialContext.java:350)
at
com.qwest.tmmt.manager.client.MDMAdapter.getEJBHome(MDMAdapter.java:197)
at
com.qwest.tmmt.manager.client.MDMAdapter.<init>(MDMAdapter.java:64)
at
com.qwest.tmmt.manager.client.ManagerFactory.createMetaDataManager(ManagerFa
ctory.java:305)
at
com.qwest.insite.util.ClientMetaDataCache.<init>(ClientMetaDataCache.java:53
at
com.qwest.insite.util.ClientMetaDataCache.getInstance(ClientMetaDataCache.ja
va:106)
at
com.qwest.insite.metadata.startup.MetaDataServlet.init(MetaDataServlet.java:
30)
at
weblogic.servlet.internal.ServletStubImpl.createServlet(ServletStubImpl.java
:700)
at
weblogic.servlet.internal.ServletStubImpl.createInstances(ServletStubImpl.ja
va:643)
at
weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.jav
a:588)
at
weblogic.servlet.internal.WebAppServletContext.preloadServlet(WebAppServletC
ontext.java:2203)
at
weblogic.servlet.internal.WebAppServletContext.preloadServlets(WebAppServlet
Context.java:2147)
at
weblogic.servlet.internal.WebAppServletContext.init(WebAppServletContext.jav
a:884)
at
weblogic.servlet.internal.WebAppServletContext.<init>(WebAppServletContext.j
ava:807)
at
weblogic.servlet.internal.HttpServer.loadWebApp(HttpServer.java:421)
at weblogic.j2ee.WebAppComponent.deploy(WebAppComponent.java:74)
at weblogic.j2ee.Application.addComponent(Application.java:160)
at weblogic.j2ee.J2EEService.addDeployment(J2EEService.java:117)
at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentT
arget.java:329)
at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentT
arget.java:144)
at
weblogic.management.mbeans.custom.WebServer.addWebDeployment(WebServer.java:
76)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl
.java:608)
at
weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:5
92)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBea
nImpl.java:352)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
at $Proxy33.addWebDeployment(Unknown Source)
at
weblogic.management.configuration.WebServerMBean_CachingStub.addWebDeploymen
t(WebServerMBean_CachingStub.java:1094)
at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentT
arget.java:315)
at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(Deployment
Target.java:279)
at
weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeployments(D
eploymentTarget.java:233)
at
weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(Deploym
entTarget.java:193)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl
.java:608)
at
weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:5
92)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBea
nImpl.java:352)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
at $Proxy32.updateDeployments(Unknown Source)
at
weblogic.management.configuration.ServerMBean_CachingStub.updateDeployments(
ServerMBean_CachingStub.java:2734)
at
weblogic.management.mbeans.custom.ApplicationManager.startConfigManager(Appl
icationManager.java:362)
at
weblogic.management.mbeans.custom.ApplicationManager.start(ApplicationManage
r.java:154)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl
.java:608)
at
weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:5
92)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBea
nImpl.java:352)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
at $Proxy45.start(Unknown Source)
at
weblogic.management.configuration.ApplicationManagerMBean_CachingStub.start(
ApplicationManagerMBean_CachingStub.java:480)
at
weblogic.management.Admin.startApplicationManager(Admin.java:1151)
at weblogic.management.Admin.finish(Admin.java:570)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:506)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:203)
at weblogic.Server.main(Server.java:35)
Thanks,
Jed Zimmer

You're correct. I meant the DOMAIN_SYSTEM_PASSWORD password in my
<domain-name>domain.ksh file. The DOMAIN_SYSTEM_PASSWORD value (if
specified) has to match the system user's password or else the server will
not start/stop.
I have determined more since my post. A startup class also produces the
same error. I have minimized my environments as follows and still receive
the exception, and a soon as I synchronize the system users' passwords on
the app/web server the problem goes away. Or, I can keep the passwords
different and just not access the app server EJBs until after the web server
finished loading, which also causes the error to go away. I'm just confused
about what I might be doing wrong.
Steps to produce the error:
App server:
- Installed from 6.1.1.0 from scratch and started it up.
- Changed the system user's password from the admin console, persisting the
changes.
- Modified logging settings to see more info in the log files.
- Disabled instrument stack traces.
- Stopped/Started the app server
Web server:
- Installed from 6.1.1.0 from scratch and started it up.
- Modified logging settings to see more info in the log files.
- Disabled instrument stack traces.
- Added a servlet to the DefaultWebApp_insiteserver application
- specified name and class
- the load on startup setting defaulted to zero, which will cause the
preloading
- Added 3 jar files to the classpath to support the EJB call
- Stopped/Started the web server
When the web server loads the servlet loads and tries to locate the EJB on
the app server. The app server throws the security exception. The app/web
servers are both running on the same SUN box, have the same IP address
(different ports) and I'm using non-SSL. Each server is it's own WLS
environment. The only installed file that is shared it the
weblogic_domain_registry.dat file in the root directory. As for security,
I'm doing nothing except changing one password (system user on the app
server).
I then tried to manually upgrade the app/web servers to 6.1.2.0 by updating
the WEBLOGIC_ROOT in the respective xxxxdomain.ksh files. Same problem.
I then cleanly reinstalled the app/web servers using version 6.1.2.0 and
configured as above. Same problem.
Let me know if I need to provide additional details.
Thanks,
Jed Zimmer
"Joseph Nguyen" <[email protected]> wrote in message
news:[email protected]...
>
"Jed Zimmer" <[email protected]> wrote in message
news:[email protected]...
I am experiencing this error when a servlet or JSP is preloaded on the
web
server and the init method of the preloaded item results in a call tothe
app server. If I don't preload and then manually invoke the JSP orservlet
after the web server completely loads the call to the app server does
not
produce the exception. The only security differences between the weband
app servers are the console and system passwords. I can fix the problemby
making the passwords (system and console) the same across the board, but
find it hard to believe that this is the true solutionI don't quite understand what you mean by "console" password? Are you
talking about the admin console? If so then it's confusing because youhave
to log into the console using the system user. If you can clarify morehere
it would great.
Joseph Nguyen
BEA Support
. I would prefer
sticking with the default security settings.
I've poured through hundreds of messages. I can find similar problems
but
not this exact problem.
Any ideas would truly be appreciated!
More information:...
App and Web server are both wls 6.1.1.0 running on the same SUN Solarisbox.
Both are using the basic, out of the box, security.
The App server has SSL disabled.
The exception reported in the app server's log is:
java.lang.SecurityException: Authentication for user system denied inrealm
wl_realm
at weblogic.security.acl.Realm.authenticate(Realm.java:212)
atweblogic.security.acl.Realm.getAuthenticatedName(Realm.java:233)
at
weblogic.security.acl.internal.Security.authenticate(Security.java:125)
atweblogic.security.acl.internal.Security.verify(Security.java:87)
at
weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:235)
at
weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:2
2)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
The exception reported in the web server's log is:
java.lang.SecurityException: Authentication for user system denied inrealm
wl_realm
at
weblogic.rmi.internal.BasicOutboundRequest.sendReceive(BasicOutboundRequest.
java:85)
at
weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java
:255)
at
weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java
:222)
at weblogic.rmi.internal.ProxyStub.invoke(ProxyStub.java:35)
at $Proxy54.lookup(Unknown Source)
at
weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:323)
at javax.naming.InitialContext.lookup(InitialContext.java:350)
at
com.qwest.tmmt.manager.client.MDMAdapter.getEJBHome(MDMAdapter.java:197)
at
com.qwest.tmmt.manager.client.MDMAdapter.<init>(MDMAdapter.java:64)
at
com.qwest.tmmt.manager.client.ManagerFactory.createMetaDataManager(ManagerFa
ctory.java:305)
at
com.qwest.insite.util.ClientMetaDataCache.<init>(ClientMetaDataCache.java:53
at
com.qwest.insite.util.ClientMetaDataCache.getInstance(ClientMetaDataCache.ja
va:106)
at
com.qwest.insite.metadata.startup.MetaDataServlet.init(MetaDataServlet.java:
30)
at
weblogic.servlet.internal.ServletStubImpl.createServlet(ServletStubImpl.java
:700)
at
weblogic.servlet.internal.ServletStubImpl.createInstances(ServletStubImpl.ja
va:643)
at
weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.jav
a:588)
at
weblogic.servlet.internal.WebAppServletContext.preloadServlet(WebAppServletC
ontext.java:2203)
at
weblogic.servlet.internal.WebAppServletContext.preloadServlets(WebAppServlet
Context.java:2147)
at
weblogic.servlet.internal.WebAppServletContext.init(WebAppServletContext.jav
a:884)
at
weblogic.servlet.internal.WebAppServletContext.<init>(WebAppServletContext.j
ava:807)
at
weblogic.servlet.internal.HttpServer.loadWebApp(HttpServer.java:421)
at weblogic.j2ee.WebAppComponent.deploy(WebAppComponent.java:74)
at weblogic.j2ee.Application.addComponent(Application.java:160)
at weblogic.j2ee.J2EEService.addDeployment(J2EEService.java:117)
at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentT
arget.java:329)
at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentT
arget.java:144)
at
weblogic.management.mbeans.custom.WebServer.addWebDeployment(WebServer.java:
76)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl
.java:608)
at
weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:5
92)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBea
nImpl.java:352)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
at $Proxy33.addWebDeployment(Unknown Source)
at
weblogic.management.configuration.WebServerMBean_CachingStub.addWebDeploymen
t(WebServerMBean_CachingStub.java:1094)
at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentT
arget.java:315)
at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(Deployment
Target.java:279)
at
weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeployments(D
eploymentTarget.java:233)
at
weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(Deploym
entTarget.java:193)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl
.java:608)
at
weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:5
92)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBea
nImpl.java:352)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
at $Proxy32.updateDeployments(Unknown Source)
at
weblogic.management.configuration.ServerMBean_CachingStub.updateDeployments(
ServerMBean_CachingStub.java:2734)
at
weblogic.management.mbeans.custom.ApplicationManager.startConfigManager(Appl
icationManager.java:362)
at
weblogic.management.mbeans.custom.ApplicationManager.start(ApplicationManage
r.java:154)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl
.java:608)
at
weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:5
92)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBea
nImpl.java:352)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
at $Proxy45.start(Unknown Source)
at
weblogic.management.configuration.ApplicationManagerMBean_CachingStub.start(
ApplicationManagerMBean_CachingStub.java:480)
at
weblogic.management.Admin.startApplicationManager(Admin.java:1151)
at weblogic.management.Admin.finish(Admin.java:570)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:506)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:203)
at weblogic.Server.main(Server.java:35)
Thanks,
Jed Zimmer

Synchronisation and concurrent programming for embedded Java

Hi,
I am looking for Informations about Synchronisation of concurrent access to Objekts for embedded Java applications. Are there Design Patterns or for this topic or general for Sync. in embedded Systems? And are there Embedded JVMs, with special Synchronisation for Embedded Java Apps? I am also looking for an Overview of existing Embedded JVMs of the market. Who can help with e.g. Infos, Books, Links and so on?
Thanks

[takeshi_fl],
It is better for you to post this question under the topic "Embedded Java" on this forum website.

New Java SE for Embedded 6 free evaluation releases on ARM/Linux available

Hi:
People who are reading this forum might be interested to know about
Sun's Java SE for Embedded 6 releases on ARM/Linux that have been
made available today for free evaluation -- three updated releases (for
ARM v6 and v7) and two new releases (for ARM v5), both headless
and headful versions are available:
[http://java.sun.com/javase/downloads/embedded.jsp|http://java.sun.com/javase/downloads/embedded.jsp]
[http://java.sun.com/javase/embedded/system_requirements.jsp|http://java.sun.com/javase/embedded/system_requirements.jsp]
When you select a Java SE for Embedded eval through either of the
above URLs, the download link will be sent to you by e-mail after you
fill out a quick survey and agree to a click-through, 90-days e-license.
For more information about Sun's Java SE for Embedded product, please
start at the main web page for this product:
[http://java.sun.com/javase/embedded/|http://java.sun.com/javase/embedded/]
This page also includes a link through which you can [contact Sun|http://www.javelinfeedback.com/sun/index.jsp?pi=353770340fcc19a6ca0f558647d48f48] to submit
any further questions about the Java SE for Embedded product.
Thanks,
Carlos B. Lucasius
Java SE Embedded and Real-Time Engineering
Sun Microsystems, Inc.
[http://sites.google.com/site/javartsandjavaseforembedded/|http://sites.google.com/site/javartsandjavaseforembedded/]

Hello,
Just a quick question: can we have an official position from Sun regarding support of earlier releases of Solaris with Java RTS 2.1? Our customer is currently running Solaris 10 Update 3 with current Recommended patches, and the 2.1 beta cyclic driver supported this version of Solaris. However with the official release version of 2.1, support for U3 disappeared (only U4 and U5 are now supported). Aside from "rubber stamping" the Solaris build via /etc/release, is there a technical reason why U3 is no longer supported? As long as our kernel is up to date, can we safely use 2.1? Or is it just a case of being unable to officially support and test so many releases of Solaris?
Is this a general rule-of-thumb we can expect in future: only supporting the last 2 updates of Solaris 10?
Your advice is appreciated.
Thanks,
Dave.

Becouse of expire of credit card I updated billing information by providing data of new credit card but system just says "We're sorry, the billing information on file could not be used for this payment. Please update your information.". What exactly is wr

Becouse of expire of credit card I updated billing information by providing data of new credit card but system just says "We're sorry, the billing information on file could not be used for this payment. Please update your information.". What exactly is wrong?

Are you 100% sure that every detail of your information is the same in each place?
Make sure that EVERY DETAIL is the same in every place you enter your information
-right down to how you spell and punctuate the parts of your name and address
Change/Verify Account https://forums.adobe.com/thread/1465499 may help
-Credit card https://helpx.adobe.com/utilities/credit-card.html

What are the hours of operation for phone support? I cannot find them and the phone system just says between regular hours?

My patience has been pushed to its limit with this iPod and I cannot find hours of operation for customer service and tech support and the phone system just tells you no one is available and call back during regular hours, but nothing saying what those hours are. Does anyone know?

Looking at the Apple's website and previous posts, Apple does not publish the hours. Did you can in the USA during the times that corresponsd to about 9AM to 4PM Pacific time?

Install Java SE for embedded

Hello,
I am trying to install Java SE for Embedded 7 ARM v6/7 Linux Headless on my Pogoplug ARM v6 running Linux Arch.
For this I downloaded the .tar.gz file from Oracle's website ( version=7u4-armv6-eabi-k2.6.28-libc2.9-hflt-le), applied the tar command to decompress, moved the result to /opt/java, adapted the enironment variables by editing the /etc/profile file as follows:
PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/opt/java/bin"
export PATH
export JAVA_HOME="/opt/java"
export PATH="opt/java/bin:$PATH"
when running an application that needs JAVA, I get:
17015 Illegal instruction java -Declipse.ignoreApp=true -Dosgi.noShutdown=true -Djetty.port=8080 -Djetty.port.ssl=8443 -Djetty.home=. -Dlogback.configurationFile=logs/logback.xml -Dfelix.fileinstall.dir=addons -Djava.library.path=lib -Djava.security.auth.login.config=./etc/login.conf -Dorg.quartz.properties=./etc/quartz.properties -jar $cp $* -console
I assume Java is not installed correctly (it is the first time I install manually)?

I see the same error for my ARM9 from Atmel. I think it's because my ARM9 AT91SAM9263 processor is ARMv5TEJ and ejre1.6.0 require ARMv6 or above. Don't mix up ARM9 and ARMv6. It's different thing.
Derek

Java.lang.SecurityException: Authentication for user system denied in realm weblogic

I am looking for some help to deploy the application in weblogic6.0.
This is what i did during the application deployment.
Create a new directory under config as a new application.
D:\bea\wlserver6.0\config\test
under test created two other directories applications and logs.
Under the applications directory copied .ear and .war files.
Under the test i copied config.xml, all the *.pem starttest.cmd, fileRealam.properties
files. Modified the config.xml with my application, domain and the server. Modified
the settest.cmd with the new domain and server name.
when i do startup, it is prompting for the password and i entered what ever i mentioned
during the installation.
And getting the following error.
Thanks alot for any suggestions.
D:\bea\wlserver6.0\config\test>startTest.cmd
D:\bea\wlserver6.0>set PATH=.\bin;D:\bea\jdk130\bin;C:\RATIONAL\RATION~1\NUTCROO
T\bin;C:\RATIONAL\RATION~1\NUTCROOT\bin\x11;C:\RATIONAL\RATION~1\NUTCROOT\mksnt;
C:\WINNT\system32;C:\WINNT;C:\WINNT\System32\Wbem;C:\Program Files\Dell\Resoluti
on Assistant\Common\bin;C:\PROGRA~1\MICROS~4\Office;C:\PROGRA~1\ULTRAE~1;C:\Rati
onal\common;C:\Rational\Rational Test;C:\jdk1.3\bin;C:\Ant\bin;
D:\bea\wlserver6.0>set CLASSPATH=.;.\lib\weblogic_sp.jar;.\lib\weblogic.jar
D:\bea\wlserver6.0>D:\bea\jdk130\bin\java -hotspot -ms64m -mx64m -classpath .;.\
lib\weblogic_sp.jar;.\lib\weblogic.jar -Dweblogic.Domain=test -Dweblogic.Name=te
stServer -Dbea.home=D:\bea -Dcloudscape.system.home=./samples/eval/cloudscape/da
ta -Djava.security.policy==D:\bea\wlserver6.0/lib/weblogic.policy weblogic.Serve
r
Enter password to boot weblogic server:password
Starting WebLogic Server ....
<Feb 14, 2001 12:13:04 PM EST> <Notice> <Management> <Loading configuration file
.\config\test\config.xml ...>
<Feb 14, 2001 12:13:06 PM EST> <Info> <Logging> <Only log messages of severity "
Error" or worse will be displayed in this window. This can be changed at Admin C
onsole> test> Servers> testServer> Logging> Debugging> Stdout severity threshold
>
<Feb 14, 2001 12:13:08 PM EST> <Emergency> <Server> <Unable to initialize the se
rver: 'Fatal initialization exception
Throwable: java.lang.SecurityException: Authentication for user system denied in
realm weblogic
java.lang.SecurityException: Authentication for user system denied in realm webl
ogic
at weblogic.security.acl.Realm.authenticate(Realm.java:209)
at weblogic.security.acl.Realm.getAuthenticatedName(Realm.java:229)
at weblogic.security.acl.internal.Security.authenticate(Security.java:11
3)
at weblogic.security.SecurityService.initializeSuid(SecurityService.java
:293)
at weblogic.security.SecurityService.initialize(SecurityService.java:123
at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:343)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:169)
at weblogic.Server.main(Server.java:35)
'>
The WebLogic Server did not start up properly.
Exception raised: java.lang.SecurityException: Authentication for user system de
nied in realm weblogic
java.lang.SecurityException: Authentication for user system denied in realm webl
ogic
at weblogic.security.acl.Realm.authenticate(Realm.java:209)
at weblogic.security.acl.Realm.getAuthenticatedName(Realm.java:229)
at weblogic.security.acl.internal.Security.authenticate(Security.java:11
3)
at weblogic.security.SecurityService.initializeSuid(SecurityService.java
:293)
at weblogic.security.SecurityService.initialize(SecurityService.java:123
at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:343)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:169)
at weblogic.Server.main(Server.java:35)
Reason: Fatal initialization exception
D:\bea\wlserver6.0>goto finish
D:\bea\wlserver6.0>cd config\test
D:\bea\wlserver6.0\config\test>ENDLOCAL
D:\bea\wlserver6.0\config\test>

Seen this, may give a clue?
Server Known Problems Change Request Number Description
042556
The weblogic.Admin command now requires the user and password options. For example:
java weblogic.Admin -username system -password gumby1234
The username "system" is required for most functions (for example: VERSION). If
you do not specify -username system, you will get the following error:
Exception in thread "main" java.lang.SecurityException: Authentication for user
system denied in realm weblogic
<<no stack trace available>>
"lazar" <[email protected]> wrote:
>
I would also like to know, if there is a fix for it.
Thanks
Lazar
Greg Layton <[email protected]> wrote:
Did you ever get an answer to this. If so could you share it with me.ThanksGreg

JAVA for embedded systems: just a myth ?

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