SQLPATH problem

Hi ,
I want to set the SQLPATH variable to use the login.sql
I set the variable in the regedit and in the uservariables, but either of them work .
I also tried to use them a at the sametime.
What exactly means the log_file of the LSNRCTL tool
Is it the listener.log wich logs Listener informations or can I use it witzh the glogin.sql, as I read it ?
Thank for your posts
marcel

Ahaha... Seems like I have to answer on my own. The information can be obtained from Oracle Metalink Note# 43208.1. Below is the snapshot of which C++ compiler should be used for OCCI version 10.2.0:-
SOLARIS SPARC
=============
9.2.0 Sun Forte Workshop 6.2 111678-13, 111679-08, (64 bit)
111681-01, 111683-08, 111685-10, 111690-07,
111691-06, 111719-02.
* 10.1.0 Sun ONE Studio 8, C/C++ 5.5
* 10.2.0 Sun ONE Studio 8, C/C++ 5.5
That's all. Happy Googling. :D

Similar Messages

URL problems with SQL Server Reporting Services 2012 with wildcard SSL certificate

Hi,
I have single server, domain member, with SQL Server 2012 SP1 Reporting Services.
I am trying to get work with url: https://reports.mydomain.com
I have valid wildcard certificate (*.mydomain.com) implemented and configured URLs in Configuration Manager.
https://reports.mydomain.com/ReportServer - works fine
https://reports.3pro.hr/Reports/ - I got error:
The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.
In rsreportserver.config I have:
<Add Key="SecureConnectionLevel" Value="2"/>
When looking my ReportServerService_date.log file I have something like:
configmanager!DefaultDomain!3f4c!03/10/2013-20:24:34:: i INFO: Using report server internal url https://localhost:443/ReportServer.
configmanager!DefaultDomain!3f4c!03/10/2013-20:24:34:: i INFO: Using report server external url https://serverhostname:443/ReportServer.
configmanager!DefaultDomain!3f4c!03/10/2013-20:24:34:: i INFO: Using url root https://reports.mydomain.com/ReportServer.
configmanager!DefaultDomain!3f4c!03/10/2013-20:24:34:: i INFO: Using report server internal url https://localhost:443/ReportServer.
configmanager!DefaultDomain!3f4c!03/10/2013-20:24:34:: i INFO: Using report server external url https://serverhostname:443/ReportServer.
configmanager!DefaultDomain!3f4c!03/10/2013-20:24:34:: i INFO: Using url root https://reports.mydomain.com/ReportServer.
Also, error shown in log file:
appdomainmanager!ReportManager_0-2!4c50!03/10/2013-20:24:53:: e ERROR: Remote certificate error RemoteCertificateNameMismatch encountered for url https://localhost/ReportServer/ReportService2010.asmx.
ui!ReportManager_0-2!4c50!03/10/2013-20:24:54:: e ERROR: System.Net.WebException: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. ---> System.Security.Authentication.AuthenticationException:
The remote certificate is invalid according to the validation procedure.
Btw, is there a way to delete/disable access using https://localhost and/or servername (not FQDN) since SSL will not work in this way for me, and I want access only by full url - https://reports.mydomain.com , not localhost ..
-- Hrvoje Kusulja

I spent one of my 4 free support incidents with Microsoft (part of MSDN subscription) this year to get this investigated. The tech support person helped me through several issues but had to leave to attend some training, and I got past the last hurdle
before she called me back. Here are the steps that resolved this issue for me. I know for sure that step 5 was necessary. Step 1 may not apply to you, and steps 2-4 may or may not have been necessary (they didn't immediately fix the issue,
but I didn't roll them back either so they may have been necessary.)
Step 1:
Ensure you are editing the correct rsreportserver.config file. I had been making changes to a file that was installed in C:\Program Files\Common Files\microsoft shared\Web Server Extensions\14\WebServices\Reporting, but that was a rsreportserver.config
file for some sharepoint integration that I'm not using. The correct path on my system was E:\MSRS11.MSSQLSERVER\Reporting Services\ReportServer\rsreportserver.config, but yours may vary. If you can't figure it out, look in the registry under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft
SQL Server\MSRS11.MSSQLSERVER\Setup in the key named SQLPath, and then go to the ReportServer subdirectory of that path.
Step 2:
In rsreportserver.config, ensure that SecureConnectionLevel is set to the value 3. Was set to 0 in my configuration. Corrected line in your rsreportserver.confiog file should look like:
<Add Key="SecureConnectionLevel" Value="3"/>
Step 3:
In rsreportserver.config, add the correct value to the <URLRoot> element (which already exists in the file.) In my configuration, this value was blank. The value should be the fully qualified path to your report server, with a hostname that
is valid for your certificate. For example, if my cert matches *.mydomain.local:
<UrlRoot>
https://myserver.mydomain.local/ReportServer
</UrlRoot>
Step 4:
Ensure that your certificate exists in Trusted Root Certification Authorities in certmgr for the local machine. I had the certificate installed as a Personal certificate for the local machine, which I still think was correct (the certificate wasn't actually
the problem and worked correctly for Report Server, and the failure was caused by SSRS incorrectly making a https request to a localhost URL), but she had me remove the certificate from Personal and add it to Trusted Root Certificate Authorities. That
broke things and the cert was no longer listed as a cert I could bind to, so we then copied it so it existed in both Personal and Trusted Root Certificate Authorities. This is how I left it, not sure if that was necessary.
Step 5:
This was the fix that finally got things to work. In rsreportserver.config, add the same value to the <ReportServerUrl> element (which also already exists in the file) that you added in step 3. In my configuration, this value was also blank.
The corrected value should be the same as in step 3, for example:
<ReportServerUrl>
https://myserver.mydomain.local/ReportServer
</ReportServerUrl>
Then restart your report server (stop & then start in Report Server Configuration Manager), and the problem should go away. At least it did for me.
Good luck!

Problem with: select 'c' as X from dual

Problem with 'select 'c' as X from dual'
I get 2 different results when I execute the above with SQLPlus (or java) depending on the instance I am connected to. For one instance the result is a single character and for the other the character is padded with blanks to 32 chars in the SQLPlus window (and java). Does anyone know what database setting causes this to happen? Is it a version issue ?
Test #1: Oracle 9.2.0.6 - SQLPlus result is padded with blanks
SQL*Plus: Release 9.2.0.1.0 - Production on Mon Dec 10 09:27:58 2007
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.6.0 - 64bit Production
With the Partitioning option
JServer Release 9.2.0.6.0 - Production
SQL> select 'c' as X from dual;
X
c
SQL>
Test #2 Oracle 9.2.0.1 SQLPlus result is a single character.
SQL*Plus: Release 9.2.0.1.0 - Production on Mon Dec 10 09:29:27 2007
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.1.0 - Production
SQL> select 'c' as X from dual;
X
c
SQL>

Using 9.2.0.6 On AIX 5.2 I get the single byte result:
UT1 > select 'c' as X from dual;
X
c
If the databases are on different Oracle Homes you may want to check the sqlplus global logon files for any set commands.
If you executed the two sql statements from different OS directories you may also want to check your sqlpath for sqlplus .logon files.
Try issueing clear columns and repeating the statement. Are the results the same?
HTH -- Mark D Powell --

ORA-01722: invalid number when updating a CMP bean, SP10 WebLogic_RDBMS.jar problem?

Hi guys
We are having a problem with the migration to WLCS 3.2 SP2 / WLS 5.1 SP10.
We are moving from WLCS 3.2 and WLS SP6. Our CMP beans generate errors when
the container tries to update them. They deploy without error though.
See below for the stack trace
We use the recommended weblogic driver for our Oracle 8.1.7.0 database. WL
runs on w2k, and Oracle on Solaris 7.
Extract from set-environment:
SET DB_CLASSPATH=
SET PATH=%PATH%;%WEBLOGIC_HOME%\bin\oci815_8;%WLCS_ORACLE_HOME%\bin
SET
SQLPATH=C:\WebLogicCommerceServer3.2\db\oracle816;C:\WebLogicCommerceServer3
.2\db\oracle816\event;
Extract from weblogic.properties:
weblogic.jdbc.connectionPool.commercePool=\
url=jdbc:weblogic:oracle,\
driver=weblogic.jdbc.oci.Driver,\
I made a few experiments, and I noticed that generating the CMP classes
(with EJBC) with the old WebLogic_RDBMS.jar (from WLS SP6) is working fine.
Here is what I mean : ejbc uses the library
c:\weblogic\lib\persistence\WebLogic_RDBMS.jar And this library has changed
with SP10. However since that change and after rebuilding our jars, all CMP
entity beans fail to update.
If I just replace that WebLogic_RDBMS.jar with the previous one (from SP6),
and without changing anything else, our CMP beans work fine. I did not
change any driver or xml deployment descriptor.
One of the generated files in the jar (for our bean
VisibilityPSWebLogic_CMP_RDBMS.class) differs, and that seems to be the
cause of the problem.
I jadded that class and here is a difference I notice:
OLD, ejbc ran with SP6 WebLogic_RDBMS.jar : visibilitybean.targetCompanyId =
(BigDecimal)resultset.getObject(5);
NEW, ejbc ran with SP10 WebLogic_RDBMS.jar : visibilitybean.targetCompanyId
= resultset.getBigDecimal(5, 35);
Similar differences for the SETbigdecimal.
Dunno if that will help, but I'm attaching the 2 jar files with explicit
names.
Damn that was long, I hope someone will read it... Thanks for any help on
this, see stack trace attached below
Nicolas Lejeune
Stack trace:
mer. oct. 03 12:16:22 CEST 2001:<I> <EJB JAR deployment
C:/WebLogicCommerceServer3.2/lib/foundation.jar> Exception in
non-transactional EJB invoke:
java.rmi.UnexpectedException: Unexpected exception in
com.b2boost.visibility.VisibilityBean.getVisibilityId():
java.sql.SQLException: ORA-01722: invalid number
at weblogic.db.oci.OciCursor.getCDAException(OciCursor.java:230)
at weblogic.jdbcbase.oci.Statement.executeUpdate(Statement.java:980)
at
weblogic.jdbc20.pool.PreparedStatement.executeUpdate(PreparedStatement.java:
47)
at
com.b2boost.visibility.VisibilityPSWebLogic_CMP_RDBMS.update(VisibilityPSWeb
Logic_CMP_RDBMS.java:446)
at
com.b2boost.visibility.VisibilityPSWebLogic_CMP_RDBMS.store(VisibilityPSWebL
ogic_CMP_RDBMS.java:376)
at
weblogic.ejb.internal.EntityEJBContext.store(EntityEJBContext.java:192)
at
weblogic.ejb.internal.EntityEJBContext.beforeCompletion(EntityEJBContext.jav
a:227)
at
weblogic.ejb.internal.StatefulEJBObject.postInvokeNoTx(StatefulEJBObject.jav
a:355)
at
weblogic.ejb.internal.BaseEJBObject.postInvoke(BaseEJBObject.java:865)
at
com.b2boost.visibility.VisibilityBeanEOImpl.getVisibilityId(VisibilityBeanEO
Impl.java:198)
at
com.b2boost.visibility.pipeline.LoadFirstVisibilityRequestPC.process(LoadFir
stVisibilityRequestPC.java:83)
at
com.beasys.commerce.foundation.pipeline.PipelineExecutorImpl.process(Pipelin
eExecutorImpl.java:193)
at
com.beasys.commerce.foundation.pipeline.PipelineExecutorImplEOImpl.process(P
ipelineExecutorImplEOImpl.java:56)
at
com.beasys.commerce.foundation.pipeline.PipelineExecutorImplEOImpl_ServiceSt
ub.process(PipelineExecutorImplEOImpl_ServiceStub.java:154)
at
com.beasys.commerce.webflow.PipelineProcessor.callPipeline(PipelineProcessor
.java:170)
at
com.beasys.commerce.webflow.PipelineProcessor.process(PipelineProcessor.java
:102)
at
com.beasys.commerce.webflow.WebflowAdvisor.handleTarget(WebflowAdvisor.java:
409)
at
com.beasys.commerce.webflow.WebflowAdvisor.processTarget(WebflowAdvisor.java
:156)
at
com.b2boost.framework.B2boostPortalDestinationDeterminer.determineDestinatio
n(B2boostPortalDestinationDeterminer.java:208)
at
com.beasys.commerce.foundation.flow.FlowManager.service(FlowManager.java:438
at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
:120)
at
weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
l.java:922)
at
weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
l.java:886)
at
weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContext
Manager.java:269)
at
weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:392)
at
weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:274)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:129)
[Visibility_generated_with_SP6_weblogic_rdbms_jar.jar]
[Visibility_generated_with_SP10_weblogic_rdbms_jar.jar]

You are using WebLogic jDriver for Oracle which needs exact version of OCI API, that comes with the Oracle client installation. Ensure that you have installed the right Oracle client version. And updated the PATH properly.
I notice that you have
bin/oci815_8
oracle816
Thsi looks liek the inconsistency in your environment.
What you need to do is
1. find oci817_8 and place that in the PATH.
2. install oracle 817 and use that client and set the ORACLE_HOME environment variable and the PATH properly.
Try this and see if it helps.
BTW - WLS 5.1 is EOL

Oracle ODBC Connection: TNS Problem?

Hello!
I'm trying to connect to a Oracle Database from a 64bit Linux machine.
I'm using instantclient 10.2.0.4 64bit and oracle odbc driver.
Here are all files and env variables, i created:
ODBCINST.INI
[Oracle]
Description = Oracle Driver
Driver = /usr/lib/libsqora.so.10.1
UsageCount = 2
ODBC.INI
[DS1]
Description = DS1
Driver = Oracle
Trace = Yes
TraceFile = sql.log
Database = //111.11.11.111:1111/db1
User = user
Password = pass
LD_LIBRARY_PATH = :/usr/lib/oracle/10.2.0.4/client64/lib
SQLPATH = /usr/lib/oracle/10.2.0.4/client64/bin
I also had edited the SQLConnect.c and isql.c: http://sourceforge.net/tracker/?func=detail&aid=2260937&group_id=1544&atid=351544
If i'm tring to connect to the database ( isql -v DS1 user pass ), i'm getting this error message:
[S1000][unixODBC][Oracle][ODBC][Ora]ORA-12162: TNS:net service name is incorrectly specified
I found a nice work-around for this problem:
export TWO_TASK=//111.11.11.111:1111/db1
After this change, i can connect to the database...
But this means, all oracle connections are trying to connect to THIS server, right? But i need more then one server possibility...
Any ideas?
Thanks, mdo.

Hello
I have found the resolution to the problem , and below is the details if required by any one .
Thanks
Harshad
1. Using MS Access, follow the process to link tables from the Oracle
database using the user account you wish to restrict, until the list of
attachable objects is shown.
2. Note the tables that appear in the list. You should see a long list of
tables owned by multiple schema owners.
3. Without linking any tables, close the Link Tables dialog box.
4. Create an ALL_OBJECTS view and ALL_SYNONYMS view in the user's schema in
which you used to log into the database.
For example:
CREATE OR REPLACE VIEW SCOTT.ALL_OBJECTS AS
SELECT * FROM SYS.ALL_OBJECTS
WHERE OWNER IN ('SCOTT');
CREATE OR REPLACE VIEW SCOTT.ALL_SYNONYMS AS
SELECT * FROM SYS.ALL_SYNONYMS
WHERE OWNER IN ('SCOTT');
5. Using MS Access, again follow the process to link tables from the Oracle
database using the user account from above to log in.
6. Note the tables that show up in the list. The only tables listed should
be those owned by the schema owner specified by the views, if the example
statement above is used.
--NOTE that this technique has the limitation that only objects actually
owned by the view user will be viewable. For example, if the user has
a synonym that points to an object in another user's schema, it will not
be visible

A problem with threads

I am trying to implement some kind of a server listening for requests. The listener part of the app, is a daemon thread that listens for connections and instantiates a handling daemon thread once it gets some. However, my problem is that i must be able to kill the listening thread at the user's will (say via a sto button). I have done this via the Sun's proposed way, by testing a boolean flag in the loop, which is set to false when i wish to kill the thread. The problem with this thing is the following...
Once the thread starts excecuting, it will test the flag, find it true and enter the loop. At some point it will LOCK on the server socket waiting for connection. Unless some client actually connects, it will keep on listening indefinatelly whithought ever bothering to check for the flag again (no matter how many times you set the damn thing to false).
My question is this: Is there any real, non-theoretical, applied way to stop thread in java safely?
Thank you in advance,
Lefty

This was one solution from the socket programming forum, have you tried this??
public Thread MyThread extends Thread{
     boolean active = true;
     public void run(){
          ss.setSoTimeout(90);
          while (active){
               try{
                    serverSocket = ss.accept();
               catch (SocketTimeoutException ste){
               // do nothing
     // interrupt thread
     public void deactivate(){
          active = false;
          // you gotta sleep for a time longer than the
          // accept() timeout to make sure that timeout is finished.
          try{
               sleep(91);
          }catch (InterruptedException ie){
          interrupt();
}

A problem with Threads and MMapi

I am tring to execute a class based on Game canvas.
The problem begin when I try to Play both a MIDI tone and to run an infinit Thread loop.
The MIDI tone "Stammers".
How to over come the problem?
Thanks in advance
Kobi
See Code example below:
import java.io.IOException;
import java.io.InputStream;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.media.Manager;
import javax.microedition.media.MediaException;
import javax.microedition.media.Player;
public class MainScreenCanvas extends GameCanvas implements Runnable {
     private MainMIDlet parent;
     private boolean mTrucking = false;
     Image imgBackgound = null;
     int imgBackgoundX = 0, imgBackgoundY = 0;
     Player player;
     public MainScreenCanvas(MainMIDlet parent)
          super(true);
          this.parent = parent;
          try
               imgBackgound = Image.createImage("/images/area03_bkg0.png");
               imgBackgoundX = this.getWidth() - imgBackgound.getWidth();
               imgBackgoundY = this.getHeight() - imgBackgound.getHeight();
          catch(Exception e)
               System.out.println(e.getMessage());
      * starts thread
     public void start()
          mTrucking = true;
          Thread t = new Thread(this);
          t.start();
      * stops thread
     public void stop()
          mTrucking = false;
     public void play()
          try
               InputStream is = getClass().getResourceAsStream("/sounds/scale.mid");
               player = Manager.createPlayer(is, "audio/midi");
               player.setLoopCount(-1);
               player.prefetch();
               player.start();
          catch(Exception e)
               System.out.println(e.getMessage());
     public void run()
          Graphics g = getGraphics();
          play();
          while (true)
               tick();
               input();
               render(g);
      * responsible for object movements
     private void tick()
      * response to key input
     private void input()
          int keyStates = getKeyStates();
          if ((keyStates & LEFT_PRESSED) != 0)
               imgBackgoundX++;
               if (imgBackgoundX > 0)
                    imgBackgoundX = 0;
          if ((keyStates & RIGHT_PRESSED) != 0)
               imgBackgoundX--;
               if (imgBackgoundX < this.getWidth() - imgBackgound.getWidth())
                    imgBackgoundX = this.getWidth() - imgBackgound.getWidth();
      * Responsible for the drawing
      * @param g
     private void render(Graphics g)
          g.drawImage(imgBackgound, imgBackgoundX, imgBackgoundY, Graphics.TOP | Graphics.LEFT);
          this.flushGraphics();
}

You can also try to provide a greater Priority to your player thread so that it gains the CPU time when ever it needs it and don't harm the playback.
However a loop in a Thread and that to an infinite loop is one kind of very bad programming, 'cuz the loop eats up most of your CPU time which in turn adds up more delays of the execution of other tasks (just as in your case it is the playback). By witting codes bit efficiently and planning out the architectural execution flow of the app before start writing the code helps solve these kind of issues.
You can go through [this simple tutorial|http://oreilly.com/catalog/expjava/excerpt/index.html] about Basics of Java and Threads to know more about threads.
Regds,
SD
N.B. And yes there are more articles and tutorials available but much of them targets the Java SE / EE, but if you want to read them here is [another great one straight from SUN|http://java.sun.com/docs/books/tutorial/essential/concurrency/index.html] .
Edited by: find_suvro@SDN on 7 Nov, 2008 12:00 PM

J2ME problem with threads

Hi all,
I would like to ask you for a help. I need to write a small program at my university. I started to write a midlet which function would be to countdown time for sports activities. I woul like to start a new thread - the one that counts down - and at the same time make the main thread sleep. After the "countdown" thread finishes, the main thread wakes up and waits for user input. The problem is that when the "countdown" thread finishes his work, I've got Uncaught exception java/lang/NullPointerException. error and the midlet halts.
Below you can find the code
import java.lang.*;
import java.util.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
public class intervals extends MIDlet implements CommandListener
public Display ekran;
private SweepCanvas sweeper;
private Form rundy;
private TextField round0, round1, round2, round3, round4, round5, round6, round7, round8;
private long czas,x;
private Command exitCommand;
private Command addRound;
private Command delRound;
private Command start;
private TextField repeat;
private Form odliczanie;
private Alert ostrz;
Licznik thread;
String test;
StringItem test1;
int parz,i,j,k;
static int l;
int ilrund;
int ilpowt;
Item sec;
long sec1;
public intervals()
    rundy = new Form("Interwały sportowe");
    exitCommand = new Command("Wyjście", Command.EXIT, 2);
    addRound = new Command("Dodaj","Dodaj rundę", Command.ITEM,1);
    delRound = new Command("Usuń","Usuń ostatnią rundę", Command.ITEM,1);
    start = new Command("Start", Command.ITEM,1);
    odliczanie = new Form("Odliczanie");
    TextField dodaj(TextField kolej)
        kolej=new TextField("Podaj czas (s) rundy "+parz,null, 4, TextField.NUMERIC);//stworzenie nowej instancji do wybierania czasu trwania rundy
        if(rundy.size()==0)
            rundy.insert(rundy.size(),kolej);
            else
                rundy.insert(rundy.size()-1, kolej);
        return kolej;
    void odliczanie(TextField round)
        monitor m=new monitor();
        k=Integer.parseInt(round.getString());
        ekran.setCurrent(odliczanie);
        thread=new Licznik(k,odliczanie);
        thread.start();
        ekran.setCurrent(rundy);
public void startApp()// throws MIDletStateChangeException
    rundy.deleteAll();
    repeat = new TextField("Podaj ilość powtórzeń",null,1,TextField.NUMERIC);
    rundy.addCommand(addRound);
    rundy.addCommand(exitCommand);
    rundy.setCommandListener(this);
    Canvas obrazek = new MyCanvas();
    ekran = Display.getDisplay(this);
    ekran.setCurrent(obrazek);
    czas=System.currentTimeMillis();
    while (System.currentTimeMillis()<czas+1000)
        continue;
    ekran.setCurrent(rundy);
public void pauseApp()
public void destroyApp(boolean unconditional)
    notifyDestroyed();
public void commandAction(Command c, Displayable s)
    if (c == exitCommand)
        destroyApp(false);
        notifyDestroyed();
    else if(c==addRound)
        if(rundy.size()==0)//Sprawdzenie ilości elementów w celu poprawnego wyświetlania liczby rund w formie
            parz=1;
            else
            parz=rundy.size();
        switch(parz)
            case 1:
                round0=dodaj(round0);break;
            case 2:
                round1=dodaj(round1);break;
            case 3:
               round2= dodaj(round2);break;
            case 4:
                round3=dodaj(round3);break;
            case 5:
                round4=dodaj(round4);break;
            default:
                ostrz=new Alert("Uwaga","Maksymalna liczba rund wynosi 9", null, AlertType.INFO);
                ostrz.setTimeout(3000);
                ekran.setCurrent(ostrz);
        if(rundy.size()==1)
            rundy.append(repeat);
            rundy.addCommand(start);
        rundy.addCommand(delRound);
    else if(c==delRound)
        if(rundy.size()!=0)
            rundy.delete(rundy.size()-2);
            if (rundy.size()==1)
                rundy.deleteAll();
            if(rundy.size()==0)
                rundy.removeCommand(delRound);
                rundy.removeCommand(start);
    else if(c==start)
        ilrund=rundy.size()-1;
        if(this.repeat.size()>0)
            ilpowt=Integer.parseInt(this.repeat.getString());
        ekran = Display.getDisplay(this);
        for (i=1; i<=ilpowt;i++)
            odliczanie= new Form("Odliczanie");
             for (j=0;j<ilrund;j++)
                switch(j)
                     case 0:
                         odliczanie(round0);
                         break;
                     case 1:
                         odliczanie(round1);
                         break;
                     case 2:
                         odliczanie(round2);
                         break;
                     case 3:
                         odliczanie(round3);
                         break;
                     case 4:
                         odliczanie(round4);
                         break;
                     case 5:
                         odliczanie(round5);
                         break;
                     case 6:
                         odliczanie(round6);
                         break;
                     case 7:
                         odliczanie(round7);
                         break;
                     case 8:
                         odliczanie(round8);
                         break;
class Licznik extends Thread
    int czas1,k;
    Form forma;
    monitor m;
    public Licznik(int k,Form formap)
        czas1=k;
        forma=formap;
    public synchronized void run()
        while(czas1>0)
            forma.deleteAll();
            forma.append("Czas pozostały (s): "+czas1);
            try{Thread.sleep(1000);} catch(InterruptedException e){e.printStackTrace();}
            czas1--;
        if(czas1<=0)
            m.put();
    }and monitor class
public class monitor
boolean busy=false;
synchronized void get()
    if(!busy)
        try
            wait();
        }catch(InterruptedException e){e.printStackTrace();}
    notify();
synchronized void put()
    if(busy)
        try
        wait();
        }catch(InterruptedException e){e.printStackTrace();}
    busy=true;
    notify();
}Can anybody help me with this?

Groovemaker,
Your Licznik class has a member m of type monitor, which has not been instantiated (in other words is null) hence, when calling m.put() you get NullPointerException. Please also mind, that using Thread.sleep(1000) is not an accurate way of measuring time.
If I may, please use recommended for Java class naming conventions - some of your names use lower case, while other don't which is confusing to the reader.
Daniel

Problem with threads within applet

Hello,
I got an applet, inside this applet I have a singleton, inside this singleton I have a thread.
this thread is running in endless loop.
he is doing something and go to sleep on and on.
the problem is,
when I refresh my IE6 browser I see more than 1 thread.
for debug matter, I did the following things:
inside the thread, sysout every time he goes to sleep.
sysout in the singleton constructor.
sysout in the singleton destructor.
the output goes like this:
when refresh the page, the singleton constructor loading but not every refresh, sometimes I see the constructor output and sometimes I dont.
The thread inside the singleton is giving me the same output, sometime I see more than one thread at a time and sometimes I dont.
The destructor never works (no output there).
I don't understand what is going on.
someone can please shed some light?
thanks.
btw. I am working with JRE 1.1
this is very old and big applet and I can't convert it to something new.

Ooops. sorry!
I did.
     public void start() {
     public void stop() {
     public void destroy() {
          try {
               resetAll();
               Configuration.closeConnection();
               QuoteItem.closeConnection();
          } finally {
               try {
                    super.finalize();
               } catch (Throwable e) {
                    e.printStackTrace();
     }

Problem with Threads and a static variable

I have a problem with the code below. I am yet to make sure that I understand the problem. Correct me if I am wrong please.
Code functionality:
A timer calls SetState every second. It sets the state and sets boolean variable "changed" to true. Then notifies a main process thread to check if the state changed to send a message.
The problem as far I understand is:
Assume the timer Thread calls SetState twice before the main process Thread runs. As a result, "changed" is set to true twice. However, since the main process is blocked twice during the two calls to SetState, when it runs it would have the two SetState timer threads blocked on its synchronized body. It will pass the first one, send the message and set "changed" to false since it was true. Now, it will pass the second thread, but here is the problem, "changed" is already set to false. As a result, it won't send the message even though it is supposed to.
Would you please let me know if my understanding is correct? If so, what would you propose to resolve the problem? Should I call wait some other or should I notify in a different way?
Thanks,
B.D.
Code:
private static volatile boolean bChanged = false;
private static Thread objMainProcess;
   protected static void Init(){
        objMainProcess = new Thread() {
            public void run() {
                while( objMainProcess == Thread.currentThread() ) {
                   GetState();
        objMainProcess.setDaemon( true );
        objMainProcess.start();
    public static void initStatusTimer(){
        if(objTimer == null)
             objTimer = new javax.swing.Timer( 1000, new java.awt.event.ActionListener(){
                public void actionPerformed( java.awt.event.ActionEvent evt){
                          SetState();
    private static void SetState(){
        if( objMainProcess == null ) return;
        synchronized( objMainProcess ) {
            bChanged = true;
            try{
                objMainProcess.notify();
            }catch( IllegalMonitorStateException e ) {}
    private static boolean GetState() {
        if( objMainProcess == null ) return false;
        synchronized( objMainProcess ) {
            if( bChanged) {
                SendMessage();
                bChanged = false;
                return true;
            try {
                objMainProcess.wait();
            }catch( InterruptedException e ) {}
            return false;
    }

Thanks DrClap for your reply. Everything you said is right. It is not easy to make them alternate since SetState() could be called from different places where the state could be anything else but a status message. Like a GREETING message for example. It is a handshaking message but not a status message.
Again as you said, There is a reason I can't call sendMessage() inside setState().
The only way I was able to do it is by having a counter of the number of notifies that have been called. Every time notify() is called a counter is incremented. Now instead of just checking if "changed" flag is true, I also check if notify counter is greater than zero. If both true, I send the message. If "changed" flag is false, I check again if the notify counter is greater than zero, I send the message. This way it works, but it is kind of a patch than a good design fix. I am yet to find a good solution.
Thanks,
B.D.

Problem with threads running javaw

Hi,
Having a problem with multi thread programming using client server sockets. The program works find when starting the the application in a console using java muti.java , but when using javaw multi.java the program doesnt die and have to kill it in the task manager. The program doesnt display any of my gui error messages either when the server disconnect the client. all works find in a console. any advice on this as I havent been able to understand why this is happening? any comment would be appreciated.
troy.

troy,
Try and post a minimum code sample of your app which
does not work.
When using javaw, make sure you redirect the standard
error and standard output streams to file.
Graeme.Hi Graeme,
I dont understand what you mean by redirection to file? some of my code below.
The code works fine under a console, code is supposed to exit when the client (the other server )disconnects. the problem is that but the clientworker side of the code still works. which under console it doesnt.
public class Server{
ServerSocket aServerSocket;
Socket dianosticsSocket;
Socket nPortExpress;
ClientListener aClientListener;
LinkedList queue = new LinkedList();
int port = 0;
int clientPort = 0;
String clientName = null;
boolean serverAlive = true;
* Server constructor generates a server
* Socket and then starts a client threads.
* @param aPort      socket port of local machine.
public Server(int aPort, String aClientName, int aClientPort){
port = aPort;
clientName = aClientName;
clientPort = aClientPort;
try{
// create a new thread
aServerSocket = new ServerSocket(port) ;
// connect to the nPortExpress
aClientListener = new ClientListener(InetAddress.getByName(clientName), clientPort, queue,this);
// aClientListener.setDaemon(true);
aClientListener.start();
// start a dianostic port
DiagnosticsServer aDiagnosticsServer = new DiagnosticsServer(port,queue,aClientListener);
// System.out.println("Server is running on port " + port + "...");
// System.out.println("Connect to nPort");
catch(Exception e)
// System.out.println("ERROR: Server port " + port + " not available");
JOptionPane.showMessageDialog(null, (e.toString()),"ERROR: Server port " + port + " not available", JOptionPane.ERROR_MESSAGE);
serverAlive = false;
System.exit(1);
while(serverAlive&&aClientListener.hostSocket.isConnected()){
try{
// connect the client
Socket aClient = aServerSocket.accept();
//System.out.println("open client connection");
//System.out.println("client local: "+ aClient.getLocalAddress().toString());
// System.out.println("client localport: "+ aClient.getLocalPort());
// System.out.println("client : "+ aClient.getInetAddress().toString());
// System.out.println("client port: "+ aClient.getLocalPort());
// make a new client thread
ClientWorker clientThread = new ClientWorker(aClient, queue, aClientListener, false);
// start thread
clientThread.start();
catch(Exception e)
//System.out.println("ERROR: Client connection failure");
JOptionPane.showMessageDialog(null, (e.toString()),"ERROR: Client connection failure", JOptionPane.ERROR_MESSAGE);
}// end while
} // end constructor Server
void serverExit(){
     JOptionPane.showMessageDialog(null, "Server ","ERROR: nPort Failure", JOptionPane.ERROR_MESSAGE);
     System.exit(1);
}// end class Server
*** connect to another server
public class ClientListener extends Thread{
InetAddress hostName;
int hostPort;
Socket hostSocket;
BufferedReader in;
PrintWriter out;
boolean loggedIn;
LinkedList queue;      // reference to Server queue
Server serverRef; // reference to main server
* ClientListener connects to the host server.
* @param aHostName is the name of the host eg server name or IP address.
* @param aHostPort is a port number of the host.
* @param aLoginName is the users login name.
public ClientListener(InetAddress aHostName, int aHostPort,LinkedList aQueue,Server aServer)      // reference to Server queue)
hostName = aHostName;
hostPort = aHostPort;
queue = aQueue;
serverRef = aServer;
// connect to the server
try{
hostSocket = new Socket(hostName, hostPort);
catch(IOException e){
//System.out.println("ERROR: Connection Host Failed");
JOptionPane.showMessageDialog(null, (e.toString()),"ERROR: Connection to nPort Failed", JOptionPane.ERROR_MESSAGE);
System.exit(0);
} // end constructor ClientListener
** multi client connection server
ClientWorker(Socket aSocket,LinkedList aQueue, ClientListener aClientListener, boolean diagnostics){
queue = aQueue;
addToQueue(this);
client = aSocket;
clientRef = aClientListener;
aDiagnostic = diagnostics;
} // end constructor ClientWorker
* run method is the main loop of the server program
* in change of handle new client connection as well
* as handle all messages and errors.
public void run(){
boolean alive = true;
String aSubString = "";
in = null;
out = null;
loginName = "";
loggedIn = false;
while (alive && client.isConnected()&& clientRef.hostSocket.isConnected()){
try{
in = new BufferedReader(new InputStreamReader(client.getInputStream()));
out = new PrintWriter(new OutputStreamWriter(client.getOutputStream()));
if(aDiagnostic){
out.println("WELCOME to diagnostics");
broadCastDia("Connect : diagnostics "+client.getInetAddress().toString());
out.flush();
else {
out.println("WELCOME to Troy's Server");
broadCastDia("Connect : client "+client.getInetAddress().toString());
     out.flush();
String line;
while(((line = in.readLine())!= null)){
StringTokenizer aStringToken = new StringTokenizer(line, " ");
if(!aDiagnostic){
broadCastDia(line);
clientRef.sendMessage(line); // send mesage out to netExpress
out.println(line);
out.flush();
else{
if(line.equals("GETIPS"))
getIPs();
else{
clientRef.sendMessage(line); // send mesage out to netExpress
out.println(line);
out.flush();
} // end while
catch(Exception e){
// System.out.println("ERROR:Client Connection reset");
                         JOptionPane.showMessageDialog(null, (e.toString()),"ERROR:Client Connection reset", JOptionPane.ERROR_MESSAGE);
try{
if(aDiagnostic){
broadCastDia("Disconnect : diagnostics "+client.getInetAddress().toString());
out.flush();
else {
broadCastDia("Disconnect : client "+client.getInetAddress().toString());
     out.flush();
// close the buffers and connection;
in.close();
out.close();
client.close();
// System.out.println("out");
// remove from list
removeThreadQueue(this);
alive = false;
catch(Exception e){
// System.out.println("ERROR: Client Connection reset failure");
JOptionPane.showMessageDialog(null, (e.toString()),"ERROR: Client Connection reset failure", JOptionPane.ERROR_MESSAGE);
}// end while
} // end method run
* method run - Generates io stream for communicating with the server and
* starts the client gui. Run also parses the input commands from the server.
public void run(){
boolean alive = true;
try{
// begin to life the gui
// aGuiClient = new ClientGui(hostName.getHostName(), hostPort, loginName, this);
// aGuiClient.show();
in = new BufferedReader(new InputStreamReader(hostSocket.getInputStream()));
out = new PrintWriter(new OutputStreamWriter(hostSocket.getOutputStream()));
while (alive && hostSocket.isConnected()){
String line;
while(((line = in.readLine())!= null)){
System.out.println(line);
broadCast(line);
} // end while
} // end while
catch(Exception e){
//     System.out.println("ERRORa Connection to host reset");
JOptionPane.showMessageDialog(null, (e.toString()),"ERROR: Connection to nPort reset", JOptionPane.ERROR_MESSAGE);
try{
hostSocket.close();
     }catch(Exception a){
     JOptionPane.showMessageDialog(null, (a.toString()),"ERROR: Exception", JOptionPane.ERROR_MESSAGE);
alive = false;
System.exit(1);
} // end method run

Problem with Threads and "plase wait..."-Window

Hi everyone,
I have a problem that I'm not able to solve in any way... I have a time-consuming task (a file decryption) which I execute in a separate thread; I've used the SwingWorker class, like suggested by sun-tutorial, and it works right. The problem is that I have to wait that the decryption have finished before continuing with program-execution. Therefore I would like to display a "please wait"-window while the task runs. I've tryed all the possible ways I know but the problem is always the same: the waitWindow is displayed empty, the bounds are painted but the contents no; it's only painted when the decrypt-task has finished. Please help me, I have no more resources....
decrypt-file code:
public class DecryptFile {
private String cryptedFileNameAndPath;
private ByteArrayInputStream resultStream = null;
// need for progress
private int lengthOfTask;
private int current = -1;
private String statMessage;
public DecryptFile(String encZipFileNameAndPath) {
    cryptedFileNameAndPath = encZipFileNameAndPath;
    //Compute length of task...
    // 0 for indeterminate
    lengthOfTask = 0;
public ByteArrayInputStream getDecryptedInputStream() {
    return this.resultStream;
   * Called from ProgressBarDemo to start the task.
public void go() {
    current = -1;
    final SwingWorker worker = new SwingWorker() {
      public Object construct() {
        return new ActualTask();
    worker.start();
   * Called from ProgressBarDemo to find out how much work needs
   * to be done.
public int getLengthOfTask() {
    return lengthOfTask;
   * Called from ProgressBarDemo to find out how much has been done.
public int getCurrent() {
    return current;
public void stop() {
    current = lengthOfTask;
   * Called from ProgressBarDemo to find out if the task has completed.
public boolean done() {
    if (current >= lengthOfTask)
      return true;
    else
      return false;
public String getMessage() {
    return statMessage;
   * The actual long running task. This runs in a SwingWorker thread.
class ActualTask {
    ActualTask () {
      current = -1;
      statMessage = "";
      resultStream = AIUtil.getInputStreamFromEncZip(cryptedFileNameAndPath); //here the decryption happens
      current = 0;
      statMessage = "";
}The code that calls decryption and displays waitWindow
      final WaitSplash wS = new WaitSplash("Please wait...");
      final DecryptFile cryptedTemplate = new DecryptFile (this.templateFile);
      cryptedTemplate.go();
      while (! cryptedTemplate.done()) {
        try {
          wait();
        } catch (Exception e) { }
      this.templateInputStream = cryptedTemplate.getDecryptedInputStream();
      wS.close();Thanks, thanks, thanks in advance!
Edoardo

Maybe you can try setting the priority of the long-running thread to be lower? so that the UI will be more responsive...

Problem with threads in j2me

im using jdk 1.6 with java wtk 2.1
ya i know..
2.1 is a jdk1.4 source
but im using souce as 1.4 during compiliation so thats not the prob
this is my code
package org.learn;
import javax.microedition.midlet.MIDlet;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.Display;
public class thtest extends MIDlet
Thread t;
public void startApp()
Alert a=new Alert("hello");
a.setString("hello");
Alert b=new Alert("world");
b.setString("world");
Display d = Display.getDisplay(this );
d.setCurrent(a);
t=Thread.currentThread();
try{
t.sleep(10000);
catch (Exception e){}
d.setCurrent(b);
public void pauseApp()
public void destroyApp(boolean unconditional)
its just supposed to pause between the alerts using threads
however when i run it using the wtk, the emulator run properly but when i launch the app, it stops executing giving me this:
"Error verifying method org/learn/thtest startApp()V
Approximate bytecode offset 49: Inconsistent or missing stackmap at target
%the stack info%
Execution completed.
437782 bytecodes executed
9 thread switches
486 classes in the system (including system classes)
2506 dynamic objects allocated (73832 bytes)
2 garbage collections (60652 bytes collected)
Execution completed.
437782 bytecodes executed
9 thread switches
486 classes in the system (including system classes)
ALERT: java/lang/VerifyError: org/learn/thtest.
2506 dynamic objects allocated (73832 bytes)
2 garbage collections (60652 bytes collected)
please can someone help me out with this, is it an error on my part or do i have to set some option.

Hi gandalf123,
First, Thread.sleep is a static method, so you don't need to create a Thread object to use it.
I think the problem is due to the fact you don't preverify your midlet.
More over, you don't need to double post your question.

Problem with threads and camera.

Hi everybody!
I've a problem with taking snapshot.
I would like to display a loading screen after it take snapshot ( sometimes i
have to wait few seconds after i took snapshot. Propably photo is being taken in time where i have to wait).
I was trying to use threads but i didn't succeed.
I made this code:
display.setCurrent(perform);
        new Thread(new Runnable(){
            public void run() {
                while((!performing.isShown()) && (backgroundCamera.isShown())){
                    Thread.yield();
                notifyAll();
        }).start();
        new Thread(new Runnable(){
            public void run() {
                try {
                    this.wait();
                } catch(Exception e) {
                    exceptionHandler(e);
                photo = camera.snapshot();
                display.setCurrent(displayPhoto);
        }).start();This code is sometimes showing performing screen but sometimes no.
I don't know why. In my opinion performing.isShown() method isn't working correctly.
Does anyone have some idea how to use threads here?

Hi,
I've finally managed to work this fine.
The code:
       Object o = new Object();
       display.setCurrent(perform);
        new Thread(new Runnable(){
            public void run() {
                while(!performing.isShown()){
                    Thread.yield();
               synchronized(o) {
                  o.notify();
        }).start();
        new Thread(new Runnable(){
            public void run() {
                try {
                    synchronized(o) {
                       o.wait(1);
                } catch(Exception e) {
                    exceptionHandler(e);
                photo = camera.snapshot();
                display.setCurrent(displayPhoto);
        }).start();

Problem with threads and graphics

I have a thread that chooses paths for a Travelling salesman problem, it then calls a TSPdraw class and passes it the path, which the class then draws. the problem is when i have two threads it creates two windows but only draws a path in one of them. any ideas where i`m going wrong

Are you using swing components? Swing isn't threadsafe. If you have multiple threads that want to update your UI you need to use the SwingUtilities.invokeLater(...)or invokeAndWait(...). There is a page in the swing tutorial about this at: http://java.sun.com/docs/books/tutorial/uiswing/misc/threads.html

SQLPATH problem

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