JVM on WinCE 3.0?

Hi,
Can anybody please urgently tell me whether JVM for Win CE 3.0 for personal PC available. If yes then where can i get more information on this. And if no then please tell me can I write Java Apllications on WinCE 3.0 and using which JVM?
Thanx very much.
Jes

Hi,
You can check out various jvm, like
1. CrEme JVM from NSICom
2. Jeode from Insignia
3. Sun Personal Java 1.1
4. ChaiVM from HP
5. IBM J9 VM
Deepak Kenchamba
Eximsoft Technologies Pvt ltd
31-Jan-2003

Similar Messages

JVM for Wince 5.0

I developed a Java program. I have swing-rmi in my program. Now I need a cheaper or free JVM for Wince 5.0 (Arm9 board). Can you help me?

For WM 5.0 you will find 2 JVMs
One is for CDC and the other one MIDP/CDLC
So depending on the project you want you will have to chose.
J9 JVM last version is 6.1 for both.
here is a download link, note that you need to be registererd on IBM website(but if not, you can do it, it's free, just takes a few minutes to feel the form fields).
https://www14.software.ibm.com/webapp/iwm/web/reg/download.do?pkgid=&S_SRCID=weme&source=weme&S_TACT=104CBW71&S_CMP=&S_PKG=dl61_win&s=&ltype=input&l=English+U.S.&mtype=input&m=download&id=2006-04-06+13%3A40%3A42.143397R&fam=&cat=&cp=UTF-8
You will be asked to loggin and after that you get the download page:
What you need is:
CDC 1.1/Foundation 1.1/Personal Profile 1.1 for Windows Mobile 5.0/ARM
Executable file
ibm-weme-wm50-arm-ppro11-6.1.0-20060321-073315... (45.3MB)
download using http
Download now
OR
CLDC 1.1/MIDP 2.0 for Windows Mobile 5.0/ARM
Executable file
ibm-weme-wm50-arm-midp20-6.1.0-20060321-073242... (41.2MB)
download using http
Download now
Hope it will help,
regards,
Romain

Javascript for Epoc / WinCE

Can anyone tell me is there is a javascript plug-in for either platform? I am running a Psion Revo (Epoc) and a HP Jornado (WinCE) and would like to run web pages that need script running:
http://www.pcpitstop.com
Thanks,
Steve

Not that I can find I'm sorry. There are some web sites that provide a JVM for WinCe, I don't know about the Psion. Trouble is, there isn't anything out there for free, and I'm not sure if the JVM's would even include a plugin for the web browser.
Sorry

WinCE and J2ME

Where can I download J2ME installer and how to install. Could you please tell where can I find support on JVM for WINCE and MIPS processer.
thank

I am also looking for my HP jornada. I've heard that iPaq has it supported. [email protected]

Where can I download WINCE 6.0 Platform Builder plugin for Visual Studio 2005?

I am supporting an older product that runs WINCE 6.0. I need to build a development environment. I understand the tool chain is based on Visual Studio 2005 SP1, which I have. I also have the Windows Embedded CE 6.0 Platform Builder Service Pack 1, but
what I can't seem to find anywhere on MSDN is the base Windows Embedded CE 6.0 Platform Builder.
FWIW, I have an MSDN Universal Subscription.
[EDIT] OK, I found it. The download is named simply Windows Embedded CE 6.0. There is no "Platform Builder" in the title.
Here is the link: https://msdn.microsoft.com/en-us/subscriptions/downloads/#FileId=10961

Thanks Henrik. My question is for the same customer that Alex K. was asking about.
The customer has pointed out that 6.5 != 6.0 , so according to the wording in the documentation, the "all later releases of 6.0" would not apply to 6.5 releases. So the customer would need a precise statement from JRockit product management stating that 6.5 releases are indeed to be included wherever there is a reference to "all later releases of 6.0".
I did spend some time yesterday in MetaLink. Search Knowledge base -> Oracle JRockit for download gives 38 hits. I did find older versions of WebLogic Server in 763603.1, but nothing for JRockit. If there is another DocId with the JRockit downloads, what is it? Will I find JRockit 64 bit for Solaris 27.6.0 bundled in the WebLogic Server downloads? Guessing from the size of the downloads for Solaris 64bit (they are hundreds of MB smaller than other downloads) - it seems possible that the JVM is not included (I do not have a Solaris machine to install and check). Previously I had assumed the JVM was included, but then the customer wouldn't be asking where they can download from (unless they never bother to look what they installed).
Michael.Reiche

Open source JVM porting on MIPS

Hi All,
I am new to java , I want to port kaffe JVM to MIPS target .
I have below questions.
1. Is any other Free JVM available which can be ported to MIPS.
2. Is any body port Kaffe to MIPS..
Cheers
Naveen

NSIcom (www.nsicom.com) has already ported the J2ME-CDC to MIPS winCE based platforms.
For more information please contact [email protected]

Personal Java VM on WinCE - Problems...

Hello!
I'm trying to get Personal Java to work on my Handheld PC (HP Jornada 720) running with Windows CE 3.0.
The Installation works - but I'm not able to run any other programs than those demos that are delivered with this JVM...
If I try to run a Java app - no matter if it is a .class , .jar - the JVM tells me something like
"Java Error - Cannot find class "<Classname>" "
I compiled everything with an old JDK 1.1.8 - but even a simple "Hello World" program does not work!
The strange thing is, that a Demo Programm delievered with NSIcom CrEme simulating a 3D rubic cube does work!
Does anyone know how I can get Personal Java to work or any FREE alternatives for running Java Apps on WinCE? (I already used NSIcom CrEme - this works fine but it isn't free)
Bye,
DSH

I have same problem as you. Did you solve it?. I�ve installed Personal Java and demos work, but no my java applications. I�ve used all kinds of jdk versions, such as pjee3.1, or jdk 1.1.7, whta is similar, but always the same message. Message you wrote in your message. Neither a simple HelloWorld works fine. So, any help will be appreciated

How do I run multiple java apps in one JVM to reduce memory use?

Hi all,
I saw an article either on the web or in a magazine not too long ago about how to "detect" if the app is already running, and if so, it hands off the new instance to the already running JVM, which then creates a thread to run the Java app in. As it turns out, my app will be used in an ASP environment, through Citrix. We may have as many as 50 to 100 users running the same app, each with their own unique user ID, but all using the same one server to run it on. Each instance eats up 25MB of memory right now. So the question is if anybody knows of a URL or an app like this that can handle the process of running the same (or even different Java) apps in one JVM as separate threads, instead of requring several instances of the JVM to run? I know this article presented a fully working example, and I believe I know enough to do it but I wanted ot use the article as a reference to make sure it is done right. I know that each app basically would use the same one "launcher" program that would on first launch "listen" to a port, as well as send a message through the port to see if an existing launcher was running. If it does, it hands off the Java app to be run to the existing luancher application and shuts down the 2nd launching app. By using this method, the JVM eats up its normal memory, but each Java app only consumes its necessary memory as well and doesn't use up more JVM instance memory.
Thanks.

<pre>
import java.util.Properties;
import java.io.FileInputStream;
import java.io.IOException;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
import java.util.Enumeration;
import java.util.NoSuchElementException;
public class RunProg implements Runnable, Cloneable
private String iProg;
private String iArgs[];
public static void main(String args[])
new RunProg().main();
// first step is to start main program itself
private void main()
Properties properties = System.getProperties();
try
properties.load(new FileInputStream("RunProg.properties"));
catch(IOException e)
System.setProperties(properties);
int i = 0;
System.out.println("enter main, activeCount=" + Thread.activeCount());
while(true)
String program = properties.getProperty("Prog" + i);
if(program == null)
break;
StringTokenizer st = new StringTokenizer(program);
String[] args = new String[st.countTokens() - 1];
try
RunProg rp = (RunProg)this.clone();
rp.iProg = st.nextToken();
for(int j = 0; st.hasMoreTokens(); j++)
     args[j] = st.nextToken();
rp.iArgs = args;
Thread th = new Thread(rp);
th.setName("prog" + i + "=" + program);
th.start();
System.out.println("prog" + i + "=" + program + ", started");
catch(CloneNotSupportedException e)
System.out.println("prog" + i + "=" + program + ", can't start");
i++;
     System.out.println("end of main, activeCount=" + Thread.activeCount());
// next step is to start all others one by one
public void run()
try
Class c = Class.forName(iProg);
Class p[] = new Class[1];
p[0] = String[].class;
Method m = c.getMethod("main", p);
Object o[] = new Object[1];
o[0] = iArgs;
m.invoke(null, o);
catch(ClassNotFoundException e)
System.out.println(iProg + "ClassNotFoundException");
catch(NoSuchMethodException e)
System.out.println(iProg + "NoSuchMethodException");
catch(InvocationTargetException e)
System.out.println(iProg + "NoSuchMethodException");
catch(IllegalAccessException e)
System.out.println(iProg + "NoSuchMethodException");
System.out.println(Thread.currentThread().getName() + ", ended");
System.out.println("exit run, activeCount=" + Thread.activeCount());
// setup SecurityManager to disable method System.exit()
public RunProg()
     SecurityManager sm = new mySecurityManager();
     System.setSecurityManager(sm);
// inner-class to disable method System.exit()
protected class mySecurityManager extends SecurityManager
     public void checkExit(int status)
          super.checkExit(status);
          Thread.currentThread().stop();
          throw new SecurityException();
* inner-class to analyze StringTokenizer. This class is enhanced to check double Quotation marks
protected class StringTokenizer implements Enumeration
private int currentPosition;
private int maxPosition;
private String str;
private String delimiters;
private boolean retTokens;
* Constructs a string tokenizer for the specified string. All
* characters in the <code>delim</code> argument are the delimiters
* for separating tokens.
* <p>
* If the <code>returnTokens</code> flag is <code>true</code>, then
* the delimiter characters are also returned as tokens. Each
* delimiter is returned as a string of length one. If the flag is
* <code>false</code>, the delimiter characters are skipped and only
* serve as separators between tokens.
* @param str a string to be parsed.
* @param delim the delimiters.
* @param returnTokens flag indicating whether to return the delimiters
* as tokens.
public StringTokenizer(String str, String delim, boolean returnTokens)
currentPosition = 0;
this.str = str;
maxPosition = str.length();
delimiters = delim;
retTokens = returnTokens;
* Constructs a string tokenizer for the specified string. The
* characters in the <code>delim</code> argument are the delimiters
* for separating tokens. Delimiter characters themselves will not
* be treated as tokens.
* @param str a string to be parsed.
* @param delim the delimiters.
public StringTokenizer(String str, String delim)
this(str, delim, false);
* Constructs a string tokenizer for the specified string. The
* tokenizer uses the default delimiter set, which is
* <code>"\t\n\r\f"</code>: the space character, the tab
* character, the newline character, the carriage-return character,
* and the form-feed character. Delimiter characters themselves will
* not be treated as tokens.
* @param str a string to be parsed.
public StringTokenizer(String str)
this(str, " \t\n\r\f", false);
* Skips delimiters.
protected void skipDelimiters()
while(!retTokens &&
(currentPosition < maxPosition) &&
(delimiters.indexOf(str.charAt(currentPosition)) >= 0))
currentPosition++;
* Tests if there are more tokens available from this tokenizer's string.
* If this method returns <tt>true</tt>, then a subsequent call to
* <tt>nextToken</tt> with no argument will successfully return a token.
* @return <code>true</code> if and only if there is at least one token
* in the string after the current position; <code>false</code>
* otherwise.
public boolean hasMoreTokens()
skipDelimiters();
return(currentPosition < maxPosition);
* Returns the next token from this string tokenizer.
* @return the next token from this string tokenizer.
* @exception NoSuchElementException if there are no more tokens in this
* tokenizer's string.
public String nextToken()
skipDelimiters();
if(currentPosition >= maxPosition)
throw new NoSuchElementException();
int start = currentPosition;
boolean inQuotation = false;
while((currentPosition < maxPosition) &&
(delimiters.indexOf(str.charAt(currentPosition)) < 0 || inQuotation))
if(str.charAt(currentPosition) == '"')
inQuotation = !inQuotation;
currentPosition++;
if(retTokens && (start == currentPosition) &&
(delimiters.indexOf(str.charAt(currentPosition)) >= 0))
currentPosition++;
String s = str.substring(start, currentPosition);
if(s.charAt(0) == '"')
s = s.substring(1);
if(s.charAt(s.length() - 1) == '"')
s = s.substring(0, s.length() - 1);
return s;
* Returns the next token in this string tokenizer's string. First,
* the set of characters considered to be delimiters by this
* <tt>StringTokenizer</tt> object is changed to be the characters in
* the string <tt>delim</tt>. Then the next token in the string
* after the current position is returned. The current position is
* advanced beyond the recognized token. The new delimiter set
* remains the default after this call.
* @param delim the new delimiters.
* @return the next token, after switching to the new delimiter set.
* @exception NoSuchElementException if there are no more tokens in this
* tokenizer's string.
public String nextToken(String delim)
delimiters = delim;
return nextToken();
* Returns the same value as the <code>hasMoreTokens</code>
* method. It exists so that this class can implement the
* <code>Enumeration</code> interface.
* @return <code>true</code> if there are more tokens;
* <code>false</code> otherwise.
* @see java.util.Enumeration
* @see java.util.StringTokenizer#hasMoreTokens()
public boolean hasMoreElements()
return hasMoreTokens();
* Returns the same value as the <code>nextToken</code> method,
* except that its declared return value is <code>Object</code> rather than
* <code>String</code>. It exists so that this class can implement the
* <code>Enumeration</code> interface.
* @return the next token in the string.
* @exception NoSuchElementException if there are no more tokens in this
* tokenizer's string.
* @see java.util.Enumeration
* @see java.util.StringTokenizer#nextToken()
public Object nextElement()
return nextToken();
* Calculates the number of times that this tokenizer's
* <code>nextToken</code> method can be called before it generates an
* exception. The current position is not advanced.
* @return the number of tokens remaining in the string using the current
* delimiter set.
* @see java.util.StringTokenizer#nextToken()
public int countTokens()
int count = 0;
int currpos = currentPosition;
while(currpos < maxPosition)
* This is just skipDelimiters(); but it does not affect
* currentPosition.
while(!retTokens &&
(currpos < maxPosition) &&
(delimiters.indexOf(str.charAt(currpos)) >= 0))
currpos++;
if(currpos >= maxPosition)
break;
int start = currpos;
boolean inQuotation = false;
while((currpos < maxPosition) &&
(delimiters.indexOf(str.charAt(currpos)) < 0 || inQuotation))
if(str.charAt(currpos) == '"')
inQuotation = !inQuotation;
currpos++;
if(retTokens && (start == currpos) &&
(delimiters.indexOf(str.charAt(currpos)) >= 0))
currpos++;
count++;
return count;
</pre>
RunProg.properties like this:
Prog1=GetEnv 47838 837489 892374 839274
Prog0=GetEnv "djkfds dfkljsd" dsklfj

Communication between multiple JVMs

We have a Java toolkit that is shipped as a JAR file. The toolkit is ported from a C++ DLL running on Windows. Therefore, in both instances (Java and C++), we can't control who loads us or when.
I need to communicate between different JVMs running on the same machine. The communication is very simple: "Is this user logged on in your JVM?" I send a string to the other JVM and I get back a boolean. I don't need to worry about crossing machine boundaries. Also, I'm not expecting to have a huge number of JVMs running. Maybe 3 or 4 could be likely. However, the solution does need to scale in case there are more than that. I'm not setting a limit on the number of JVMs either.
The C++ code handled this situation very easily and elegantly. It created a named system semaphore (mutex) whenever a user logged on. The name of the mutex was the username. So, if there were multiple instances of the DLL running in separate processes (EXEs), we could easily tell if this user was logged on in another instance. We'd try to create the system semaphore - it would fail saying the name already exists. Therefore, we'd know the user was already logged on. The named system semaphore provided the means for a machine-global list - which is exactly what we wanted. It also had this extra benefit: if the process terminates normally or abnormally, the system semaphore is removed from memory. This means: the application is terminated, the user is no longer logged on, and we can relog this user on.
Therefore, I have 2 requirements:
1) A machine-global list where we can place a string. Keep in mind, it doesn't absolutely have to be a machine-global list. A suitable means to talk to other JVMs is acceptable too.
2) If the process exits normally or abnormally, the string(s) get removed (for this JVM) from the list. Abnormal termination is the more important one to focus on because lots of people of varying skill levels use our toolkit. Abnormal terminations can be common.
The first thought is to store these in a file. That solves #1, but not #2. I've seen the JIPC package. However, I'm not too crazy about requiring 3rd party developers to start up another program (JIPC) before they start up their application. As I said, we're just a toolkit so we can't control when or who loads us. It's not totally out of the question, but I'd prefer something else.
I have a fairly involved solution that involves sockets. The first JVM creates a ServerSocket on a specific port and becomes the server. Subsequent JVMs also try to create the ServerSocket on the same port. They get a BindException because the ServerSocket already exists, so they know they're clients. Then, they create a client socket and talk to the server that way. This gets a little hairy when the server goes away. The clients will scramble to become the server and then all the other clients need to reconnect to the new server.
This proposed solution sounds like it will address both requirements. However, I'm looking for something simpler. I'm asking this forum for help in case there's an easier way to do this. I don't have the breadth of experience with Java yet to know if there's a simpler way to fix this. If I have to go with the socket solution, I will. I just didn't want to overlook something simple that is already built into Java.
Thanks for any tips or suggestions

Thanks for the response.
FileLock. We still have to target JDK 1.3 so we can't use FileLocks (at this point)
JNI: That's an interesting idea. I suspect many people are using our software on Windows. Therefore, we could probably fix it in Windows the same as in the C++ code. If they're not on Windows, we could use the Sockets approach.
I also had another idea: how about hashing the username string into some integer (or long) value. Then use the hashed value to lock some other resource: like the port number passed to ServerSocket. I know ServerSocket only accepts 0 - 0xFFFF so this obviously won't work. But is there some other system-wide thing we could lock given an integral value?

Several JVM s with RMI?

Hi,
As you can guess, my Java program needs more and more memory as users connections grow.
We are of course trying to optimize the way its running but looks like we will anyway soon need to increase ressources of our JVM.
We first thought to increase memory heap but there is a limit, on any 32 bit system 4Go seems the theoretical maximum ram size. And we have to keep a 32 bit JVM, cant change this.
Here is our next idea: we would like to run our program on several JVMs.
Two options came then, and so here are my question: (maybe irrelevant for experts but I am a beginner regarding distributed architecture, so feel free to give me some reference to learn about it)
-First option: several 32 bit JVMs running together on one 64bits machine
Is it possible to run several 32 bit JVM (jre 1.5) on a windows (or linux) 64 bits machine? So that we could share the system (big) ram between each of them.
Is there, in this case, a limit for the memory heap per JVM?
What would be in this case the best way to communicate between jvms (I m thinking about RMI, but is it the only way to?)
-Second option: run several 32bits JVM on several 32 bits machine.
Questions are the same here:
is it possible? I guess so, and would it be worse or better from a performance/learning time point of view, compare to option 1?
Is RMI the best way here to make the several jvm communicate?
Hope this is clear, english is not my first language so feel free to ask me any precision
Thank you very much for any help or reference.
Jipe

Multiple JVMs dont have any inherent special behavior on the same maching. However, you must consider the shared resources of that machine such as ports and files that may be contended for.
The only advantage of multiple JVMs of single JVMs is an OS one. The JVMs are separate processes and as such if one crashes it will not bring the other down.
If you want to transfer user sessions from one JVM to another, no matter if on the same computer or not, you will need an architecture to support this. That is where application servers come in. Some of them will allow you to do this. So if you design your product to run in an application server, you have a lot of room to expand. That is really the benefit of designing for an application server.
The details of a shared session are likely very complicated. You will have to ask the application server folks about that. Maybe go over to the JBoss forums.

Linker Error during compiling ODBC WinCE C++_Sample Project

I am devloping a ODBC application for PocketPC2003 using OLite 10g Release 10.3.0.2. before that i am understanding the sample application provided with Olite.
I followed all the instructions provided in ReadMe.txt file available before using VC++ sample. After making all the settings and compiling i am getting following linker errors as mentioned below.
Any solution for this problem at the earliest will be appreciated, i have tried link all the libraries provided with WinCE armv4.
Linker Error Messages:
Error     1     error LNK2019: unresolved external symbol SQLExecDirect referenced in function "public: virtual __cdecl CSQLResult::~CSQLResult(void)" (??1CSQLResult@@UAA@XZ)     dbaccess.obj
Error     2     error LNK2019: unresolved external symbol SQLFreeStmt referenced in function "public: virtual __cdecl CSQLResult::~CSQLResult(void)" (??1CSQLResult@@UAA@XZ)     dbaccess.obj
Error     3     error LNK2019: unresolved external symbol SQLGetData referenced in function "public: class CRowObj const * __cdecl CSQLResult::Fetch(int)" (?Fetch@CSQLResult@@QAAPBVCRowObj@@H@Z)     dbaccess.obj
Error     4     error LNK2019: unresolved external symbol SQLFetch referenced in function "public: class CRowObj const * __cdecl CSQLResult::Fetch(int)" (?Fetch@CSQLResult@@QAAPBVCRowObj@@H@Z)     dbaccess.obj
Error     5     error LNK2019: unresolved external symbol SQLFreeEnv referenced in function "public: void __cdecl COLiteDB::Disconnect(void)" (?Disconnect@COLiteDB@@QAAXXZ)     dbaccess.obj
Error     6     error LNK2019: unresolved external symbol SQLFreeConnect referenced in function "public: void __cdecl COLiteDB::Disconnect(void)" (?Disconnect@COLiteDB@@QAAXXZ)     dbaccess.obj
Error     7     error LNK2019: unresolved external symbol SQLDisconnect referenced in function "public: void __cdecl COLiteDB::Disconnect(void)" (?Disconnect@COLiteDB@@QAAXXZ)     dbaccess.obj
Error     8     error LNK2019: unresolved external symbol SQLConnect referenced in function "public: int __cdecl COLiteDB::Connect(void)" (?Connect@COLiteDB@@QAAHXZ)     dbaccess.obj
Error     9     error LNK2019: unresolved external symbol SQLAllocConnect referenced in function "public: int __cdecl COLiteDB::Connect(void)" (?Connect@COLiteDB@@QAAHXZ)     dbaccess.obj
Error     10     error LNK2019: unresolved external symbol SQLAllocEnv referenced in function "public: int __cdecl COLiteDB::Connect(void)" (?Connect@COLiteDB@@QAAHXZ)     dbaccess.obj
Error     11     error LNK2019: unresolved external symbol SQLError referenced in function "public: class CSQLResult * __cdecl COLiteDB::Execute(wchar_t const *)" (?Execute@COLiteDB@@QAAPAVCSQLResult@@PB_W@Z)     dbaccess.obj
Error     12     error LNK2019: unresolved external symbol SQLDescribeCol referenced in function "public: class CSQLResult * __cdecl COLiteDB::Execute(wchar_t const *)" (?Execute@COLiteDB@@QAAPAVCSQLResult@@PB_W@Z)     dbaccess.obj
Error     13     error LNK2019: unresolved external symbol SQLNumResultCols referenced in function "public: class CSQLResult * __cdecl COLiteDB::Execute(wchar_t const *)" (?Execute@COLiteDB@@QAAPAVCSQLResult@@PB_W@Z)     dbaccess.obj
Error     14     error LNK2019: unresolved external symbol SQLAllocStmt referenced in function "public: class CSQLResult * __cdecl COLiteDB::Execute(wchar_t const *)" (?Execute@COLiteDB@@QAAPAVCSQLResult@@PB_W@Z)     dbaccess.obj

Hi,
The OLITE forum (Database Mobile Server (inc. legacy Database Lite) would be a better place to post your issue. This forum deals with the ODBC driver that connects to a "normal" Oracle database.
Hope it helps,
Greg
Edited by: gdarling on Nov 12, 2008 8:31 AM

Hotspot core dumping during JVM garbage collection ?

We have an application which calls a 3rd party supplied server API which has recently been upgraded to use Java 1.5
We are getting the following error reported by our client application. The application is also now running Java 1.5 but references many classes in jar files which would have quite old code in.
The supplier of the API has stated that the problem requires us to recompile all our jar files using v 1.5 ( including things like jconnect and jms ?!?!? ). This sounds like a bit of a cop-out to me, not to mention being impossible since we don't have the source for things like jconnect.
I suspect that there is a garbage collection problem at the bottom of all this, but I'm not sure how I can "prove" this, nor do I currently have any real clue as to how to fix any GC problem that may exist.
The application is supposed to wait for a message on a MQSeries queue and then transforms it via Xalan XSLT and sends it to a Server application. I've tried playing around with heap sizes etc but that just seems to make it worse. If I leave it at the settings that the previous version used then the client at least manages to process a couple of messages before core dumping. There doesn't seem to be a consistent trigger event to cause the core dump ( it's not a message arriving on a queue for example ) but it does seem to be fairly consistent timewise, i.e. after
Any ideas gratefully accepted.
Here's a logfile excerpt from my applications showing the Hotspot error message :
=====================================================================================
08-Jul-2008 10:01:05 Waiting for messages from COLT.BBFS
08-Jul-2008 10:02:05 Waiting for messages from COLT.BBFS
08-Jul-2008 10:03:05 Waiting for messages from COLT.BBFS
405.815: [GC [PSYoungGen: 17331K->9244K(37632K)] 111702K->103615K(192128K), 0.1615910 secs]
405.977: [Full GC#
# An unexpected error has been detected by HotSpot Virtual Machine:
# SIGBUS (0xa) at pc=0xfe141348, pid=2600, tid=8
# Java VM: Java HotSpot(TM) Server VM (1.5.0_03-b07 mixed mode)
# Problematic frame:
# V [libjvm.so+0x141348]
# An error report file with more information is saved as hs_err_pid2600.log
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
=====================================================================================
The logfile referred to in the error message contains the following.
=====================================================================================
# An unexpected error has been detected by HotSpot Virtual Machine:
# SIGBUS (0xa) at pc=0xfe141348, pid=2600, tid=8
# Java VM: Java HotSpot(TM) Server VM (1.5.0_03-b07 mixed mode)
# Problematic frame:
# V [libjvm.so+0x141348]
--------------- T H R E A D ---------------
Current thread (0x001484d8): VMThread [id=8]
siginfo:si_signo=10, si_errno=0, si_code=1, si_addr=0x0000080f
Registers:
O0=0x00487588 O1=0xfe7d6454 O2=0x000079b0 O3=0x00007800
O4=0x00008868 O5=0x00147d48 O6=0xf8781460 O7=0xfe0f7938
G1=0xe52aaae8 G2=0x00000003 G3=0x00000003 G4=0x001484d8
G5=0xf8781d98 G6=0x00000002 G7=0xf8781d98 Y=0x805683e2
PC=0xfe141348 nPC=0xfe14134c
Top of Stack: (sp=0xf8781460)
0xf8781460: fe786000 00c6ba20 fe10013c e54bab68
0xf8781470: 0000080f e54bab6c 0000080f 00000004
0xf8781480: 00487588 00000134 e54bab6c 00000004
0xf8781490: 00000001 00000000 f87814c0 fe17aef4
0xf87814a0: fe6485b4 fe7d899c 001484d8 0011da40
0xf87814b0: 00148988 00148c10 00148d7c f8781880
0xf87814c0: 007c3389 007c3c0e 00000f87 00008868
0xf87814d0: 00008800 00487588 fe141310 fe7d6454
Instructions: (pc=0xfe141348)
0xfe141338: ec 06 c0 1a 80 a5 a0 00 22 40 00 0a ba 07 60 01
0xfe141348: f2 05 a0 00 ae 0e 60 03 80 a5 e0 03 22 40 00 05
Stack: [0xf8702000,0xf8781d98), sp=0xf8781460, free space=509k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x141348]
V [libjvm.so+0x17aefc]
V [libjvm.so+0x2d557c]
V [libjvm.so+0x300ef8]
V [libjvm.so+0x301e84]
V [libjvm.so+0x2ff950]
V [libjvm.so+0x29df30]
V [libjvm.so+0x362b44]
V [libjvm.so+0x6436f0]
VM_Operation (0xe03012b0): parallel gc system gc, mode: safepoint, requested by thread 0x0031bca0
--------------- P R O C E S S ---------------
Java Threads: ( => current thread )
0x00b2c028 JavaThread "Thread-4" [_thread_in_native, id=85]
0x007f5048 JavaThread "Thread-0" [_thread_blocked, id=84]
0x00c27cf0 JavaThread "Notification Delivery" [_thread_blocked, id=81]
0x0026fa08 JavaThread "RMI LeaseChecker" daemon [_thread_blocked, id=73]
0x00821048 JavaThread "RMI RenewClean-[162.11.2.32:44425]" daemon [_thread_blocked, id=70]
0x0031bca0 JavaThread "GC Daemon" daemon [_thread_blocked, id=67]
0x00cd5d28 JavaThread "RMI Reaper" [_thread_blocked, id=66]
0x003c9300 JavaThread "Timer-0" daemon [_thread_blocked, id=65]
0x00929fe0 JavaThread "RMI TCP Accept-0" daemon [_thread_in_native, id=64]
0x0089bf18 JavaThread "SeedGenerator Thread" daemon [_thread_blocked, id=42]
0x00c47248 JavaThread "Pool thread #7" daemon [_thread_blocked, id=38]
0x00c466a0 JavaThread "Pool thread #6" daemon [_thread_blocked, id=37]
0x00311850 JavaThread "Pool thread #5" daemon [_thread_blocked, id=36]
0x00287a40 JavaThread "Pool thread #4" daemon [_thread_blocked, id=35]
0x00286e98 JavaThread "Pool thread #3" daemon [_thread_blocked, id=34]
0x00c134b0 JavaThread "Pool thread #2" daemon [_thread_blocked, id=33]
0x00ad09e0 JavaThread "Pool thread #1" daemon [_thread_blocked, id=32]
0x00286cd8 JavaThread "PoolThreadManager" daemon [_thread_blocked, id=31]
0x00c129e0 JavaThread "Channel Reaper" daemon [_thread_blocked, id=30]
0x00c669e8 JavaThread "ORB Daemon Thread" daemon [_thread_blocked, id=29]
0x00b10170 JavaThread "Worker for ServerProtocol: (iiop) /0.0.0.0:20168" daemon [_thread_blocked, id=22]
0x008a17e0 JavaThread "Syn~ Client" daemon [_thread_blocked, id=21]
0x003dc378 JavaThread "PoolScavenger0" daemon [_thread_blocked, id=20]
0x0015a928 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=15]
0x00159880 JavaThread "CompilerThread1" daemon [_thread_blocked, id=14]
0x00158a18 JavaThread "CompilerThread0" daemon [_thread_blocked, id=13]
0x00157b98 JavaThread "AdapterThread" daemon [_thread_blocked, id=12]
0x00156dc8 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=11]
0x0014ccd8 JavaThread "Finalizer" daemon [_thread_blocked, id=10]
0x0014ad90 JavaThread "Reference Handler" daemon [_thread_blocked, id=9]
0x00038238 JavaThread "main" [_thread_in_native, id=1]
Other Threads:
=>0x001484d8 VMThread [id=8]
0x0015c3b0 WatcherThread [id=16]
VM state:at safepoint (normal execution)
VM Mutex/Monitor currently owned by a thread: ([mutex/lock_event])
[0x00037728/0x00037758] Threads_lock - owner thread: 0x001484d8
[0x00033650/0x00037ba8] Heap_lock - owner thread: 0x0031bca0
Heap
PSYoungGen total 37632K, used 9244K [0xf2eb0000, 0xf7ba0000, 0xf8400000)
eden space 28352K, 0% used [0xf2eb0000,0xf2eb0000,0xf4a60000)
from space 9280K, 99% used [0xf4a60000,0xf5367080,0xf5370000)
to space 25216K, 0% used [0xf6300000,0xf6300000,0xf7ba0000)
PSOldGen total 154496K, used 94371K [0xe8400000, 0xf1ae0000, 0xf2eb0000)
object space 154496K, 61% used [0xe8400000,0xee028e78,0xf1ae0000)
PSPermGen total 35584K, used 18260K [0xe4400000, 0xe66c0000, 0xe8400000)
object space 35584K, 51% used [0xe4400000,0xe55d5158,0xe66c0000)
Dynamic libraries:
0x00010000      /dsdvlp/java/jvm/jdk1.5.0_03/bin/java
0xff350000      /usr/lib/libthread.so.1
0xff340000      /usr/lib/libdl.so.1
0xff200000      /usr/lib/libc.so.1
0xff390000      /usr/platform/SUNW,Sun-Fire-880/lib/libc_psr.so.1
0xfe000000      /dsdvlp/java/jvm/jdk1.5.0_03/jre/lib/sparc/server/libjvm.so
0xff1e0000      /usr/lib/libsocket.so.1
0xff2d0000      /usr/lib/libsched.so.1
0xff1b0000      /usr/lib/libCrun.so.1
0xff160000      /usr/lib/libm.so.1
0xff080000      /usr/lib/libnsl.so.1
0xff060000      /usr/lib/libmp.so.2
0xff030000      /dsdvlp/java/jvm/jdk1.5.0_03/jre/lib/sparc/native_threads/libhpi.so
0xfdfc0000      /dsdvlp/java/jvm/jdk1.5.0_03/jre/lib/sparc/libverify.so
0xfdf80000      /dsdvlp/java/jvm/jdk1.5.0_03/jre/lib/sparc/libjava.so
0xfdf50000      /dsdvlp/java/jvm/jdk1.5.0_03/jre/lib/sparc/libzip.so
0xfb7e0000      /usr/lib/locale/en_GB.ISO8859-1/en_GB.ISO8859-1.so.2
0xe4190000      /dsdvlp/java/jvm/jdk1.5.0_03/jre/lib/sparc/libnet.so
0xe3bd0000      /dsdvlp/lib/5/libSolarisNatives.so
0xe3e90000      /dsdvlp/java/jvm/jdk1.5.0_03/jre/lib/sparc/librmi.so
VM Arguments:
jvm_args: -Djava.ext.dirs=/dsdvlp/java/tmijar/firs7/lib/cli:/dsdvlp/java/tmijar/firs7/lib/cli/ext:/dsdvlp/java/tmijar/firs7/lib/cmn/OpenORB:/dsdvlp/java/tmijar/firs7/lib/cmn/OpenORB/ext:/dsdvlp/java/tmijar/firs7/lib/cmn:/dsdvlp/java/tmijar/firs7/lib/cmn/ext:/dsdvlp/java/tmijar/firs7/daemonlib -Duser.dir=/dsdvlp/java/tmijar/firs7 -Dopenorb.config=file:/dsdvlp/java/tmijar/firs7/configs/OpenORB/config/SynOpenORB.xml -Dopenorb.home=file:/dsdvlp/java/tmijar/firs7/configs/OpenORB -Dcom.coexis.syn.general.orbbinding=com.coexis.syn.general.orbbinding.openorb.OpenORBBinding_1_4 -Dsun.rmi.dgc.client.gcInterval=360000 -Dsun.rmi.dgc.server.gcInterval=360000000 -Xms32m -Xmx256m -Dcom.coexis.syn.clientcommandsconfiglocation=file://localhost//dsdvlp/java/tmijar/firs7/configs/clientcommands.xml -Dcom.coexis.syn.clientconfiglocation=file://localhost//dsdvlp/java/tmijar/firs7/configs/fsbbtd_client.xml -XX:+PrintGCTimeStamps -XX:+PrintGCDetails
java_command: com.coexis.syn.mqmessaging.daemon.RunDaemon -p /dsdvlp/bin/5/lndsfsd_fsbbtd.properties start
Environment Variables:
JAVA_HOME=/dsdvlp/java/jvm/jdk150
CLASSPATH=.:/dsdvlp/java/jar/jconnect520.jar:/dsdvlp/java/jar/vbjapp340.jar:/dsdvlp/java/jar/vbjorb340.jar:/dsdvlp/java/jar/javax_jndi120.jar
PATH=/usr/local/etc:/usr/lang:/usr/openwin/bin:/usr/ucb:/bin:/usr/etc:/usr/local/5/bin:/dsdvlp/bin/5:/dsdvlp/bin/4:/home/app/sybase/5/bin:/home/app/sybase/5/localscripts:/home/app/sybase/5/sqr:/home/app/lang:/home/app/lang/SC2.0.1:/usr/ccs/bin:/usr/local/opt/Acrobat3/bin:/dsdvlp/bin:.
LD_LIBRARY_PATH=/dsdvlp/java/jvm/jdk1.5.0_03/jre/lib/sparc/server:/dsdvlp/java/jvm/jdk1.5.0_03/jre/lib/sparc:/dsdvlp/java/jvm/jdk1.5.0_03/jre/../lib/sparc:/usr/lib:/usr/openwin/lib:/usr/local/5/lib:/dsdvlp/lib/5:/dstest/lib/5:/home/app/sybase/5/lib:/dstest/cats/sun4/lib:/tmitest/Opus/opus/lib
SHELL=/bin/csh
DISPLAY=CLI00184.mfil.local:1.0
OS=5
--------------- S Y S T E M ---------------
OS: Solaris 8 2/02 s28s_u7wos_08a SPARC
Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
Assembled 18 December 2001
uname:SunOS 5.8 Generic_117350-20 sun4u (T1 libthread)
rlimit: STACK 8192k, CORE 9216k, NOFILE 4096, AS infinity
load average:2.24 2.67 2.68
CPU:total 4 has_v8, has_v9, has_vis1, has_vis2, is_ultra3
Memory: 8k page, physical 8388608k(166384k free)
vm_info: Java HotSpot(TM) Server VM (1.5.0_03-b07) for solaris-sparc, built on Apr 13 2005 03:31:26 by unknown with unknown Workshop:0x550

The very first suggestion I have is to move your VM to a more recent update of 1.5.0.
It looks like you are crashing with 5.0u3, and I'm pretty sure 5.0u16 is available. You
don't want to waste your time chasing a bug that's already been fixed.

LDAP or JNDI Synchronization Across JVMs?

I need to perform an atomic operation (get & set) in
LDAP that is synchronized between multiple
applications (i.e. across JVMs).
Is that possible using iDS 4.x or 5.x?
Does iDS implementation of JNDI/LDAP API provide a
global lock mechanism (I know that this feature is not
supported in the API)?
Here is my actual problem. I need to generate a unique
id of type "long". This id should be unique across
several Java applications. I would like to store this
id in LDAP.
Any help is appreciated.
Thanks, Shahriar

There is no such locking mechanism. Is there a reason the unique id has to be type long? If not, then how about using a UUID? If it needs to be long, perhaps apportioning the number space between applications would work for you.

Printing report that has a parameter with multiple values crashes jvm

I am using BOE XI 4.0 as an unmanaged RAS.
I am able to preview a report that has a string discrete parameter that can have multiple values. If I give it a single value. It previews fine. If I give it an empty string it prints all values which is fine. If I give it two discrete values, it displays just those two.
However, if I try printing the report to a printer:
1 parameter value - prints fine.
2 parameter values - crashes jvm
empty string parameter value - crashes jvm
I would appreciate some direction on how to do this. It works in crystal reports for eclipse.
The test jsp I am using is based off of the samples. The print test jsp is the same as the preview test with the exception of the following code differences.:
preview report.jsp code
// Create a Viewer object
CrystalReportViewer viewer = new CrystalReportViewer();
// Set the report source for the viewer to the ReportClientDocument's report source
viewer.setReportSource(clientDoc.getReportSource());
// Process the http request to view the report
viewer.processHttpRequest(request, response, getServletConfig().getServletContext(), out);
// Dispose of the viewer object
viewer.dispose();
print report jsp code
PrintReportOptions printOptions = new PrintReportOptions();
printOptions.setPrinterName("DELL");
try {
      clientDoc.getPrintOutputController().printReport(printOptions);
} catch (ReportSDKException ex1) {
      System.out.println("Message - " + ex1.getLocalizedMessage());
} catch (Exception ex2) {
      System.out.println("Message - " + ex2.getLocalizedMessage());
clientDoc.close();

I am using BOE XI 4.0 as an unmanaged RAS.
I am able to preview a report that has a string discrete parameter that can have multiple values. If I give it a single value. It previews fine. If I give it an empty string it prints all values which is fine. If I give it two discrete values, it displays just those two.
However, if I try printing the report to a printer:
1 parameter value - prints fine.
2 parameter values - crashes jvm
empty string parameter value - crashes jvm
I would appreciate some direction on how to do this. It works in crystal reports for eclipse.
The test jsp I am using is based off of the samples. The print test jsp is the same as the preview test with the exception of the following code differences.:
preview report.jsp code
// Create a Viewer object
CrystalReportViewer viewer = new CrystalReportViewer();
// Set the report source for the viewer to the ReportClientDocument's report source
viewer.setReportSource(clientDoc.getReportSource());
// Process the http request to view the report
viewer.processHttpRequest(request, response, getServletConfig().getServletContext(), out);
// Dispose of the viewer object
viewer.dispose();
print report jsp code
PrintReportOptions printOptions = new PrintReportOptions();
printOptions.setPrinterName("DELL");
try {
      clientDoc.getPrintOutputController().printReport(printOptions);
} catch (ReportSDKException ex1) {
      System.out.println("Message - " + ex1.getLocalizedMessage());
} catch (Exception ex2) {
      System.out.println("Message - " + ex2.getLocalizedMessage());
clientDoc.close();

What is the diffrence between java run time env and JVM ?

I wrote an applet on computer that installed run time env J2SE 1.4 that is running ok.
when i try to run the applet on diffrent mechine that has earlier version my applet didn't run ok.
Isn't enught just to install JVM ?

The target mechine requirements should be more then
only JVM installed ?
do I have to ask for updated Run Time Env installed
also ?Yes, you have to. If your program has been developed taking advantage of a certain version of the JRE, then all people using your program must have at least that version of the JRE.

JVM on WinCE 3.0?

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