MDNSResponder Client application bug

i've not been able to track down an answer to this issue mDNSResponder. i'm running 10.7.4 on an MBAir 11" i7 (last summer's rev). it's running in a work environment (my university) where there is a lot of multicast DNS traffic (i've got ipfw filtering out the vast majority of it). on to the problem (or item of concern): i have many entries in syslog that read:
Jun 26 19:26:12 [hostname] mDNSResponder[12]: Client application bug: DNSServiceResolve(dc:2b:61:8e:84:ea@fe80::de2b:61ff:fe8e:84ea._apple-mobdev._tc p.local.) active for over two minutes. This places considerable burden on the network.
these entries are constant with about 10 with matching timestamps, at least every 2-3 minutes; sometimes more than 10 and every minute instead of every couple of minutes).
the only things that change are the mac addresses (presumably) of the DNSServiceResolve things. google has not been much help, the closest i've come are to references to a brother printer that causes similar issues (but it's a brother.local or some such line, not _apple-mobdev._tcp.local) and some mention of issues connected to wifi sync'ing of iOS devices---none of my iOS devices are setup to sync w/ this particular computer and i've confirmed that in iTunes i have checked the box to prevent iphones and such from syncing automatically.
other items to note:
- i have a second machine at home that is setup as nearly identically as can be (can't guarantee it's exact, but it's **** close) and it does not have these have these entries in the console.
- on the work machine i edited the mDNSResponder plist to disable multicast advertisement thinking this issue might be lots of other iThings on the university subnet trying to connect to my machine. no change in the error message.
so the questions are, what is causing these syslog entries? how do if resolve the root problem?
thanks.

Similar Messages

MDNSResponder[30]: Client application bug: DNSServiceResolve(Brother\032DCP

does anybody know what this means?
mDNSResponder[30]: Client application bug: DNSServiceResolve(Brother\032DCP-9045CDN.pdl-datastream.tcp.local.) active for over two minutes. This places considerable burden on the network.
It seems to come up regularly in my console and stop my machine form sleeping (I suspect).
I did remove and reinstall the Brother drivers etc. but no luck

Change Agent: I have a problem since 10.6.1-2; Missing bundle identifier. I note you had this with the Brother computer.
Here is a "sample" (not the entire log) from my system.log:
*The messages start with:*
+/Library/ReceiptsMar 15 20:10:11 jim-babcocks-imac VMware Fusion Helper304: Could not connect the action buttonPressed: to target of class NSApplication*+
+*Mar 15 20:10:12: --- last message repeated 3 times ---+
*then the multiple messages start up as in:*
+Mar 15 20:10:12 jim-babcocks-imac 0x0-0x14014.com.vmware.fusionDaemon304: 2010-03-15 20:10:12.827 pkgutil322:60f PackageKit: * Missing bundle identifier: /Library/Receipts/NeoOffice-3.0.2-Intel.pkg+
+Mar 15 20:10:12 jim-babcocks-imac pkgutil322: PackageKit: * Missing bundle identifier: /Library/Receipts/NeoOffice-3.0.2-Patch-2-Intel.pkg+
+Mar 15 20:10:12 jim-babcocks-imac 0x0-0x14014.com.vmware.fusionDaemon304: 2010-03-15 20:10:12.828 pkgutil322:60f PackageKit: * Missing bundle identifier: /Library/Receipts/NeoOffice-3.0.2-Patch-2-Intel.pkg+
+Mar 15 20:10:12 jim-babcocks-imac pkgutil323: PackageKit: * Missing bundle identifier: /Library/Receipts/Flip4Mac QuickTime Components.pkg+
+Mar 15 20:10:12 jim-babcocks-imac 0x0-0x14014.com.vmware.fusionDaemon304: 2010-03-15 20:10:12.897 pkgutil323:60f PackageKit: * Missing bundle identifier: /Library/Receipts/Flip4Mac QuickTime Components.pkg+
+Mar 15 20:10:12 jim-babcocks-imac pkgutil323: PackageKit: * Missing bundle identifier: /Library/Receipts/Flip4Mac Web Plugins.pkg+
+Mar 15 20:10:12 jim-babcocks-imac 0x0-0x14014.com.vmware.fusionDaemon304: 2010-03-15 20:10:12.900 pkgutil323:60f PackageKit: * Missing bundle identifier: /Library/Receipts/Flip4Mac Web Plugins.pkg+
*And this repeats many, many times...*
*Finally last lines are:*
+Mar 15 20:10:13 jim-babcocks-imac VMware Fusion Helper304: Could not find image named 'fusion.icns'.+
+Mar 15 20:10:13 jim-babcocks-imac VMware Fusion Start Menu328: Could not connect the action buttonPressed: to target of class NSApplication+
+Mar 15 20:10:14: --- last message repeated 3 times ---+
*Then rest of System log for startup continues......*
================================================
Of course the TWO Receipts ARE in /Library/Receipts/ <Neo Office & Flip4Mac >
And All the other apps Receipts I have installed over several months/years are there as well.
Could this be a OS 10.6.2 bug... ? (I hear 10.6.3 is just around the corner...?)
I have used the VMWare forum... they say it definately is NOT VMWAre. I disabled the Helper Daemon... still got the messages.
It did not happen in 10.5.X. Only in SNL.
Nothing slows down... after start-up, SNL all runs fine.
It just bothers me that so many error messages occur at start-up
Any ideas?
Cheers, Jim B

Web interaction with client application

Hi all,
I have self taught myself Java over the last 4 years on and off.
I am in the mid stages of developing an MRPII application with various modules. These modules are effectively JTabbedPanes within JInternalFrames. The JInternalPanes are within a JDesktopPane which also has JTabbedPanes.
This enables me to have departmental tabs at the top of my app and module functions at the left hand side, dependant of which departmental tab is selected.
I have created a class that connects to MySql and can do various functions which I then can derive specific MRPII classes.
I have a desktop PC which I have MySql configured as a server and a laptop which is configured as a client. Both machines run WindowsXP and my router is a linksys.
With this setup both machines can check inventory, take orders, produce purchase orders, create customers & vendors etc....
My next step is to try and incorporate a web component into this.
My ideal goal is to have a database that is set up and hosted on the web and works in the same way as my home network. This would enable me to deploy this application and configure the ODBC data source to point to an IP address. Is this possible and if so how would I go about it.
The other option is to create web pages with forms that interact with my local server. If this is the better option, I am unsure whether I should learn about servlets or possibly XML, as all I have learned so far is about applications.
Your guidance would be greatly appreciated.
thanks
Jim.

I wouldn't let client applications connect to a database directly. What if you make a change to the database in order to fix a bug for example, that would mean rebuilding the clients and redistributing them and in the mean time any old client is most likely broken.
I would let the server communicatie with the database locally and expose either an XML-RPC or a SOAP connection to clients. This makes your framework extendible and abstract, all you do is implement SOAP methods on the server that your clients will invoke. As long as the response of such a call never changes you do not need to change your clients. And who knows, you may even use additional data sources (other databases for example) on your server, your clients will never have to know about it.
If you want to learn about SOAP, check out Apache axis.
http://ws.apache.org/axis/index.html

Can an EJB client application access to EJBs on two domains concurrently?

It is well-known that there can be multiple domains in a SUN application server. If two domains are started up, can the same EJB client application call different EJB methods from the two domains? If can, how to implement? Please kindly give a snippet of sample codes.
Another question: can EJBs among multiple domains communicate with each other? If can, tell me how to implement and had better provide some sample codes as well.

I have my client working now!
I was looking around on other forums and found a guy who said that javax.comm has problems with security. here is the address
http://lists.dalsemi.com/maillists/java-powered-ibutton/2002-February/002168.html
He said,
"This is an error generated by the javax.comm packages when initializing
the
serial ports. It's basically a security related bug. Officially, all
packages stored in your lib/ext folder should be considered trusted
code,
running with the same permissions as your trusted main application. But
it
seems that isn't the case with comm.jar.
I've heard that signing the comm.jar file might fix it, but I wasn't
able to
verify that myself (but I didn't test with Netscape's java plugin). I
found
a workaround that should take care of it (as long as your main
application
has "all-permissions"). Try adding this line to the top of your main
method:
System.setSecurityManager(null);
So I did that and it worked except for one thing. at the end of my program the client tells me
The system cannot find the path specified.
Do you think this is a major problem? What is it trying to find??
Michael B

Error while invoking a Dataservice from client application

Hi, 
Code snippet of Client to invoke DataService is.... 
Hashtable h = new Hashtable(); 
h.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory"); 
h.put(Context.PROVIDER_URL,"t3://10.1.5.31:7001"); 
h.put(Context.SECURITY_PRINCIPAL,"weblogic"); 
h.put(Context.SECURITY_CREDENTIALS,"weblogic"); 
Context context = new InitialContext(h); 
DataService ds =DataServiceFactory.newDataService(context, "HLCApp","ld:HLCAppDataServices/com/pfizer/hlc/dataservices/HCP_DETAILS"); 
DataObject obj= (DataObject) ds.invoke("HCP_DETAILS", null); 
System.out.println(" HCP details : \n" + obj);
 
The line(which is underlind) is causing the error(I checked by putting some System.outs).
 
While invoking a DataService from the Client application(Java Client) I am getting the following error in the console.
 
Exception in thread "main" com.bea.ld.dsmediator.client.exception.SDOMediatorExc
eption: com.bea.ld.dsmediator.client.exception.SDOMediatorException: weblogic.rj
vm.PeerGoneException: ; nested exception is:
java.io.EOFException
at com.bea.ld.dsmediator.client.XmlDataServiceBase.invoke(XmlDataService
Base.java:114)
at com.pfizer.hlc.DSClient.HCP.main(HCP.java:23)
Caused by: com.bea.ld.dsmediator.client.exception.SDOMediatorException: weblogic
.rjvm.PeerGoneException: ; nested exception is:
java.io.EOFException
at com.bea.ld.dsmediator.client.XmlDataServiceBase.invokeQuery(XmlDataSe
rviceBase.java:183)
at com.bea.ld.dsmediator.client.XmlDataServiceBase.invoke(XmlDataService
Base.java:102)
... 1 more
Caused by: weblogic.rjvm.PeerGoneException: ; nested exception is:
java.io.EOFException
at weblogic.rjvm.BasicOutboundRequest.sendReceive(BasicOutboundRequest.j
ava:108)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteR
ef.java:290)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteR
ef.java:248)
at com.bea.ld.Server_ydm4ie_EOImpl_816_WLStub.executeFunction(Unknown So
urce)
at com.bea.ld.dsmediator.client.XmlDataServiceBase.invokeQuery(XmlDataSe
rviceBase.java:157)
... 2 more
Caused by: java.io.EOFException
at weblogic.rjvm.t3.T3JVMConnection.endOfStream(T3JVMConnection.java:897
at weblogic.socket.SocketMuxer.deliverExceptionAndCleanup(SocketMuxer.ja
va:599)
at weblogic.socket.SocketMuxer.deliverEndOfStream(SocketMuxer.java:549)
at weblogic.socket.SocketMuxer.readReadySocketOnce(SocketMuxer.java:707)
at weblogic.socket.SocketMuxer.readReadySocket(SocketMuxer.java:654)
at weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java:2
82)
at weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:
32)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)
 
And in the server's log file the exception is like below 
<Nov 1, 2006 4:29:31 PM IST> <Error> <RJVM> <gsipl-c2-8> <cgServer> <ExecuteThread: '1' for queue: 'weblogic.socket.Muxer'> <<WLS Kernel>> <> <BEA-000503> <Incoming message header or abbreviation processing failed
java.io.InvalidClassException: javax.xml.namespace.QName; local class incompatible: stream classdesc serialVersionUID = 4418622981026545151, local class serialVersionUID = -9120448754896609940
java.io.InvalidClassException: javax.xml.namespace.QName; local class incompatible: stream classdesc serialVersionUID = 4418622981026545151, local class serialVersionUID = -9120448754896609940
 at java.io.ObjectStreamClass.initNonProxy(Ljava.io.ObjectStreamClass;Ljava.lang.Class;Ljava.lang.ClassNotFoundException;Ljava.io.ObjectStreamClass;)V(Unknown Source)
 at java.io.ObjectInputStream.readNonProxyDesc(Z)Ljava.io.ObjectStreamClass;(Unknown Source)
 at java.io.ObjectInputStream.readClassDesc(Z)Ljava.io.ObjectStreamClass;(Unknown Source)
 at java.io.ObjectInputStream.readObject0(Z)Ljava.lang.Object;(Unknown Source)
 at java.io.ObjectInputStream.readObject()Ljava.lang.Object;(Unknown Source)
 at weblogic.rjvm.ClassTableEntry.readExternal(ClassTableEntry.java:33)
 at java.io.ObjectInputStream.readExternalData(Ljava.io.Externalizable;Ljava.io.ObjectStreamClass;)V(Unknown Source)
 at java.io.ObjectInputStream.readOrdinaryObject(Z)Ljava.lang.Object;(Unknown Source)
 at java.io.ObjectInputStream.readObject0(Z)Ljava.lang.Object;(Unknown Source)
 at java.io.ObjectInputStream.readObject()Ljava.lang.Object;(Unknown Source)
 at weblogic.rjvm.InboundMsgAbbrev.readObject(InboundMsgAbbrev.java:65)
 at weblogic.rjvm.InboundMsgAbbrev.read(InboundMsgAbbrev.java:37)
 at weblogic.rjvm.MsgAbbrevJVMConnection.readMsgAbbrevs(MsgAbbrevJVMConnection.java:212)
 at weblogic.rjvm.MsgAbbrevInputStream.readMessageContext(MsgAbbrevInputStream.java:251)
 at weblogic.rjvm.ConnectionManager.dispatch(ConnectionManager.java:748)
 at weblogic.rjvm.t3.T3JVMConnection.dispatch(T3JVMConnection.java:782)
 at weblogic.socket.NTSocketMuxer.processSockets(NTSocketMuxer.java:105)
 at weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:32)
 at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
 at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)
 
My workstation environment is
Weblogic 8.1 SP6,Aqualogic 2.0 ,os is WindowsXP and JDK is jrockit81sp6_142_10.
 
Does anyone have any idea, why i am getting this error.
 
Thanks, 
Suresh varma.

Hi Suresh varma
Did you get any answer for your problem?
I'm having the exact same problem. Working with Weblogic 8.1 SP6 and getting this strange message whenever I'm calling my data service.
I've followed the guidlines given on the URL posted here, and still getting the same message.
Let me know if you have any idea.
Cheers
Rod

Java client application + SAP Logon Tickets (SSO)

Java client application + SAP Logon Tickets (SSO)
Hello
I have the following question, it is about connection between SAP Enterprise Portal and Java Application.
After registration in Enterprise Portal (with Internet Explorer Browser) request is passed on to SAP backend system - cFolders (SSO methode)
With internet browser functioned everything.
How can one get, however, this Logon tickets with Java application and then be of use later for SOAP connection
(everything with client java application)
Thanks for quick help
Edo

Hi Edo,
look at this https://media.sdn.sap.com/javadocs/NW04/SPS15/um/com/sap/security/api/ticket/TicketVerifier.html
Best Regards
Oliver

I want to access JMS Queue in websphere from a client application

Hello all
I tried to access a jms queue in the websphere from a client application
my connection factory jndi name is : MyConn
my queue name jndi name is : MyQueue
and here is my code :
Hashtable environment = new Hashtable();
environment.put(Context.INITIAL_CONTEXT_FACTORY,
"com.ibm.websphere.naming.WsnInitialContextFactory");
environment.put(Context.URL_PKG_PREFIXES, "com.ibm.ws.naming");
environment.put(Context.PROVIDER_URL, "corbaloc:iiop:localhost:2809");
return new InitialContext(environment);
then:
q = (Queue) ctx.lookup(QJNDIName);
QueueConnectionFactory connFactory = (QueueConnectionFactory)
ctx.lookup(ConnFactName);
I had the following exception :
javax.naming.NameNotFoundException: Context: networking/nodes/networking/servers/server1, name: MyQueue: First component in name MyQueue not found. Root exception is org.omg.CosNaming.NamingContextPackage.NotFound: IDL:omg.org/CosNaming/NamingContext/NotFound:1.0
Can i have any help please ....

Hi
You are missing some critical jar files in your class path. It should be namingclient.jar, also please or something similar that is missing in classpath.
HTH
VJ

Java.nio select() method return 0 in my client application

Hello,
I'm developing a simple chat application who echo messages
But my client application loop because the select() method return 0
This is my code
// SERVER
package test;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.util.Iterator;
import java.util.Set;
public class Server {
     private int port = 5001;
     public void work() {
          try {
               ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();
               serverSocketChannel.configureBlocking(false);
               InetSocketAddress isa = new InetSocketAddress(port);
               serverSocketChannel.socket().bind(isa);
               Selector selector = Selector.open();
               serverSocketChannel.register(selector, SelectionKey.OP_ACCEPT);
               System.out.println("Listing on "+port);
               while(selector.select()>0) {
                    Set keys = selector.selectedKeys();
                    for(Iterator i = keys.iterator(); i.hasNext();) {
                         SelectionKey key = (SelectionKey) i.next();
                         i.remove();
                         if (key.isAcceptable()) {
                              ServerSocketChannel keyChannel = (ServerSocketChannel)key.channel();
                              SocketChannel channel = keyChannel.accept();
                              channel.configureBlocking(false);
                              channel.register(selector, SelectionKey.OP_READ );
                         } else if (key.isReadable()) {
                              SocketChannel keyChannel = (SocketChannel) key.channel();
                              String m = Help.read(keyChannel );
                              Help.write(m.toUpperCase(), keyChannel );
          } catch (IOException e) {
               e.printStackTrace();
     public static void main(String[] args) {
          Server s = new Server();
          s.work();
// CLIENT
package test;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.SocketChannel;
import java.util.Iterator;
import java.util.Set;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class Client extends JFrame {
     private String host = "localhost";
     private int port = 5001;
     private SocketChannel socketChannel;
     private Selector selector;
     public void work() {
          try {
               socketChannel = SocketChannel.open();
               socketChannel.configureBlocking(false);
               InetSocketAddress isa = new InetSocketAddress(host, port);
               socketChannel.connect(isa);
               selector = Selector.open();
               socketChannel.register(selector, SelectionKey.OP_CONNECT | SelectionKey.OP_READ );
               while(true) {
                    selector.select();
                    Set keys = selector.selectedKeys();
                    for(Iterator i = keys.iterator(); i.hasNext();) {
                         SelectionKey key = (SelectionKey) i.next();
                         i.remove();
                         if (key.isConnectable()) {
                              SocketChannel keyChannel = (SocketChannel) key.channel();
                              if (keyChannel.isConnectionPending()) {
                                   System.out.println("Connected "+keyChannel.finishConnect());
                         } else if (key.isReadable()) {
                              SocketChannel keyChannel = (SocketChannel) key.channel();
                              String m = Help.read(keyChannel);
                              display(m);
          } catch (IOException e) {
               e.printStackTrace();
     private void display(final String m) {
          SwingUtilities.invokeLater(new Runnable() {
               public void run() {
                    area.append(m+"\n");
                    textFieed.setText("");
     private void sendMessage(final String m) {
          Thread t = new Thread(new Runnable() {
               public void run() {
                    try {
                         Help.write(m, socketChannel);
                    } catch (IOException e) {
                         e.printStackTrace();
          t.start();
     public Client() {
          addWindowListener(new WindowAdapter() {
               public void windowClosing(WindowEvent e) {
                    System.exit(1);
          textFieed.addKeyListener(new KeyAdapter() {
               public void keyPressed(KeyEvent e) {
                    if (e.getKeyCode()== KeyEvent.VK_ENTER) {
                         String m = textFieed.getText();
                         sendMessage(m);
          area.setEditable(false);
          getContentPane().add(textFieed, "North");
          getContentPane().add(new JScrollPane(area));
          setBounds(200, 200, 400, 300);
          show();
     private String messageToSend;
     private JTextArea area = new JTextArea();
     JTextField textFieed = new JTextField();
     public static void main(String[] args) {
          Client s = new Client();
          s.work();
// HELPER CLASS
package test;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.channels.SocketChannel;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
public class Help {
     private static Charset charset = Charset.forName("us-ascii");
     private static CharsetEncoder enc = charset.newEncoder();
     private static CharsetDecoder dec = charset.newDecoder();
     private static void log(String m) {
          System.out.println(m);
     public static String read(SocketChannel channel) throws IOException {
          log("*** start READ");
          int n;
          ByteBuffer buffer = ByteBuffer.allocate(1024);
          while((n = channel.read(buffer)) > 0) {
               System.out.println("     adding "+n+" bytes");
          log(" BUFFER REMPLI : "+buffer);
          buffer.flip();
          CharBuffer cb = dec.decode(buffer);
          log(" CHARBUFFER : "+cb);
          String m = cb.toString();
          log(" MESSAGE : "+m);
          log("*** end READ");
          //buffer.clear();
          return m;
     public static void write(String m, SocketChannel channel) throws IOException {
          log("xxx start WRITE");
          CharBuffer cb = CharBuffer.wrap(m);
          log(" CHARBUFFER : "+cb);
          ByteBuffer buffer = enc.encode(cb);
          log(" BUFFER ALLOUE REMPLI : "+buffer);
          int n;
          while(buffer.hasRemaining()) {
               n = channel.write(buffer);
          System.out.println(" REMAINING : "+buffer.hasRemaining());
          log("xxx end WRITE");

Here's the fix for that old problem. Change the work method to do the following
- don't register interest in things that can't happen
- when you connect register based on whether the connection is complete or pending.
- add the OP_READ interest once the connection is complete.
This doesn't fix all the other problems this code will have,
eg.
- what happens if a write is incomplete?
- why does my code loop if I add OP_WRITE interest?
- why does my interestOps or register method block?
For code that answers all those questions see my obese post Taming the NIO Circus
Here's the fixed up Client code
// CLIENT
package test
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.SocketChannel;
import java.util.Iterator;
import java.util.Set;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class Client extends JFrame {
     private String host = "localhost";
     private int port = 5001;
     private SocketChannel socketChannel;
     private Selector selector;
     public void work() {
          try {
               socketChannel = SocketChannel.open();
               socketChannel.configureBlocking(false);
               InetSocketAddress isa = new InetSocketAddress(host, port);
               socketChannel.connect(isa);
               selector = Selector.open();
               int interest = 0;
               if(socketChannel.isConnected())interest = SelectionKey.OP_READ;
               else if(socketChannel.isConnectionPending())interest = SelectionKey.OP_CONNECT;
               socketChannel.register(selector, interest);
               while(true)
                    int nn = selector.select();
                    System.out.println("nn="+nn);
                    Set keys = selector.selectedKeys();
                    for(Iterator i = keys.iterator(); i.hasNext();)
                         SelectionKey key = (SelectionKey) i.next();
                         i.remove();
                         if (key.isConnectable())
                              SocketChannel keyChannel = (SocketChannel) key.channel();
                              System.out.println("Connected "+keyChannel.finishConnect());
                              key.interestOps(SelectionKey.OP_READ);
                         if (key.isReadable())
                              SocketChannel keyChannel = (SocketChannel) key.channel();
                              String m = Help.read(keyChannel);
                              display(m);
          } catch (IOException e) {
               e.printStackTrace();
     private void display(final String m) {
          SwingUtilities.invokeLater(new Runnable() {
               public void run() {
                    area.append(m+"\n");
                    textFieed.setText("");
     private void sendMessage(final String m) {
          Thread t = new Thread(new Runnable() {
               public void run() {
                    try {
                         Help.write(m, socketChannel);
                    } catch (IOException e) {
                         e.printStackTrace();
          t.start();
     public Client() {
          addWindowListener(new WindowAdapter() {
               public void windowClosing(WindowEvent e) {
                    System.exit(1);
          textFieed.addKeyListener(new KeyAdapter() {
               public void keyPressed(KeyEvent e) {
                    if (e.getKeyCode()== KeyEvent.VK_ENTER) {
                         String m = textFieed.getText();
                         sendMessage(m);
          area.setEditable(false);
          getContentPane().add(textFieed, "North");
          getContentPane().add(new JScrollPane(area));
          setBounds(200, 200, 400, 300);
          show();
     private String messageToSend;
     private JTextArea area = new JTextArea();
     JTextField textFieed = new JTextField();
     public static void main(String[] args) {
          Client s = new Client();
          s.work();

How can I start a client Application from a procedure?

Hello, can someone help me to solve this problem?
I've written a client Application.(just one file Client.java) Then I created a .jar file for my applicaiton component and loaded it to the server using loadjava. (MyExample.jar)
It should be invoked by a procedure, which I've created.
create or replace procedure TEST as language java name 'MyExample.main(java.lang.String[])';
But when I want to start it in the SQl*Plus using "call TEST();", I received the message:
Executing PL/SQL: CALL COSMOS."JDEV_TMP_PROC_1"()
ORA-29541: Klasse COSMOS.CompUpdateClient konnte nicht aufgelöst werden
ORA-06512: in "COSMOS.TEST", Zeile 0
ORA-06512: in "COSMOS.JDEV_TMP_PROC_1", Zeile 3
ORA-06512: in Zeile 1
Process exited.
Can someone tell me why and how I can solve it?
Thanks
Lucia

As Andrew suggested, it might be an issue with broken java installation on your system.
You could try performing following steps to see if you get similar results. This will verify if there is something with your java installation or something to with the way you coded your java class(es).
(since you did not post the code, I'm not sure which one might be a problem.
SQL> create or replace and compile java source named "Hello" as
2 import java.lang.* ;
3 import java.util.* ;
4
5 public class Hello
6 {
7    public static void Say()
8    {
9     System.out.println("Hello World in Java!") ;
10    }
11 }
12 /
Java created.
SQL>
SQL> create or replace procedure Hello_Java is
2 language java
3 name 'Hello.Say()' ;
4 /
Procedure created.
SQL> show errors
No errors.
SQL>
SQL> set serveroutput on size 100000
SQL> exec dbms_java.set_output(100000) ;
PL/SQL procedure successfully completed.
SQL> exec Hello_Java ;
Hello World in Java!
PL/SQL procedure successfully completed.
SQL>

Using database views in ADF mobile client application

Hi,
I am using Jdeveloper 11.1.1.4 and WLS 10.3.4.
I have developed a POC in ADF mobile client application both with and without synchronization. However, both work with entity objects based on tables.
I need to use database views instead of tables. When I try to include entity object (based on views) in the view object, it shows an error saying "Only the entity objects based on tables can be selected"
Please guide me if there is a work around for this.
Also, please let me know if there is way to develop an ADF mobile client application skipping the use of entity objects at all and using view objects directly to specify the database query and fetch data from the database.
Thanks in advance.
Ansh
Edited by: ansh on Mar 28, 2011 5:40 AM

Hi, Ansh:
Currently, out of box, ADF Mobile Client does not support synchronization against Database Views. This is because Mobile Server imposes some schema restrictions to ensure synchronization with multi-table views would work correctly. This schema restriction requires, for example, the view must have a primary parent table with key defined, and also all base table must be included in the data publication. These dependencies requires manual resolution and advanced planning, and is managed outside of the ADF Mobile Client/JDeveloper project.
To continue development, you would need to create server Entity Objects directly against the base tables. You can then create the mobile ADF Business Component (EOs, VOs, etc). You can then create View Objects in your ADF Mobile Client application based on the database views, in order to retrieve the data you need exactly. In other words, instead of basing EO on the database view, create View Objects in the mobile applicaiton to mimic what you had in the View Object.
Is there any other reason why you would need to access data via database views, instead of directly against base tables?
Thanks,
Joe Huang

How to invoke A CORBA-Java Client Application, from Oracle???

Hi,
I have a CORBA-Java Client Application, which takes the input parameters from a Oracle table and calls the CORBA Server, passes these parameters to the C++ Server Application and gets the results back thorugh CORBA.
My problem is, this java application needs to be invoked, when ever there is a new record in the Oracle table.
I am not sure if i can use Java Stored Procedures in Oracle in this case, because my app is in Sun JVM and i am using BEA WebLogic Enterprise 5.1 for the CORBA.
Is there any other way by which i can invoke this app, when a new record is updated in the Oracle table?
Currently, i have just put a TIMER in my java App, to check the oracle table in every few seconds, to see if there is a new reocrd. If it finds a new record it invokes the corresponding class(corba class), or else just keep sending a messsage that no new record is available.
The problems i am facing in this method are as follows;
1. Unnecessarily, the application has to keep on running if there is no request coming frequently.
2. When there is a new record found, the Corba Class is called and the whole process (till it gets the result back from the server) takes about 20 - 30 secs. But within this period, if there is another record coming into Oracle table, my timer class doesnt invoke another corba class....(though i am using multithreading by using the RemidTask method in the timer.schedule.
(timer.schedule(new RemindTask(),10,5*1000);)
3. Also, if during the first call, there is some error, then the whole process exits, instead of another process running parallely (when a second new record is found).
So how does this timer class act like a multithreading process?
Well, i hope i am not confusing....Please let me know if anyone wants bit more elaboration on this.
It would be really helpful if someone can suggest some answer to my problem.
Thanks in advance.

Thank you very much Keith.
Though i am really getting a hope of solving this problem, from you answer, i am actually not 100% sure if i understood your reply properly.
First of all, about
1. "use the update stored procedure to place the updated record (or unique index) onto an Oracle Application Queue."
-- Why do i need to put the record in the AQ. (Frankly speaking, at this moment i dont have much idea about AQ, probably i can learn more about it from oracle technet site? Or would u suggest anything else?)
Then,
2."Your app then waits on this queue and for each new message, consumes it, gets the data required from the AQ load (e.g the index and or record), and fires off the CORBA class"
-- How does my application stay in the queue? and gets the data from the queue?
Of course, as far as i understand, i am going through the same principle...keeping on running a timer class, which keeps on checking the table for a new record, and when it finds, it calls the CORBA class.
Of course, i feel there should be a difference in running the timer continuosly and staying in queue. However i am totally unaware, how can i make my java app to wait in the queue and waits for a new record?
Can you please elaborate your answer a bit more, because i dont know about the AQ, that you have mentioned.
Thank you very much in advance for your time. But please know that it will be of great help to me and hence will be higly appreciated.
Regards,
Subhasree.

Getting Error While Deploying SOADEMO-CLIENT Application

Hi All,
I got an error while deploying the SOADEMO-CLIENT application. Below is the error message.
Error(119,9): CustomerServiceSoapHttp_Stub not found in class oracle.soademo.view.services.runtime.CustomerSvc_Impl .
Please help how to resolve this problem .
Thanks
KOTI

Yes, I did previously did the same thing, got same error. After I deleted the workspace. Again started the process from new work space.
But this time also got same error.
When I double click on the error, CustomerSvc_Impl.java opened in Jdeveloper and showinf errors at below line.
oracle.soademo.view.services.runtime.CustomerServiceSoapHttp_Stub stub = new oracle.soademo.view.services.runtime.CustomerServiceSoapHttp_Stub (handlerChain);
try {
stub. _initialize* (super.internalTypeRegistry);
Note : The bold string is showing errors.
Edited by: user11118888 on May 14, 2009 5:25 PM

How to pass XML file as a input to DataService from client application

Hi,
I have a function in DataService which will take a complex parameter as input. So from client application how can I pass the Complex parameter?
If anyone knows please help me.
thanks,
Suresh varma

Something like this. The types will be generated when you Generate SDO Mediator client.
somenamespace.MyComplexParamDocument myComplexParamDoc=
MyComplexParamDocument.factory().newInstance();
MyComplexParam myComplexParam=myComplexParamDoc.addNewMyComplexParam();
myComplexParam.setFirstName("John");
CUSTOMERPROFILEDocument[] myCust =
customerDS.getCustomerByComplexParam(myComplexParamDoc);

High CPU Usage On client application when upgrade remote SQL database

Hi,
Is anyone here encountered very high CPU usage after upgraded the database from SQL 2005 to SQL 2012? Following describes my issue.
I have my client application running on Windows 7 that access to central database (SQL 2005) on Windows server 2003 using ODBC connection, this client application basically query data and perform data insert and update. There are a number of this similar
clients connected to the database.
Due to slowness of the database server, company decided to upgrade the database server to SQL 2012 and also new hardware runing Windows Server 2012. There is no change on the client application and client hardware and the client application still using the
same ODBC connection to query, insert or update the new database server.
The problem I am now experiencing now is that my client PC where my client application running the CPU usage is very high almost hitting 100% when accessing to the central database. I am also noticed this program lsass.exe that utilized almost 40-50% of
the CPU time when client application accessing the central database.
Is anyone here know, why client PC CPU usage 100% when access to upgraded SQL 2012 database? What is lsass.exe program doing, it only appear when accessing to database server. How to reduce the CPU usage on client?
Thanks.
Chee Wee.

Hello,
After upgrading, please rebuild indexes and update statistics on the databases.
http://www.mssqltips.com/sqlservertip/1367/sql-server-script-to-rebuild-all-indexes-for-all-tables-and-all-databases/
http://www.mssqltips.com/sqlservertip/1606/execute-update-statistics-for-all-sql-server-databases/
Configure maxdop on the instance.
http://blogs.msdn.com/b/sqlsakthi/archive/2012/05/24/wow-we-have-maxdop-calculator-for-sql-server-it-makes-my-job-easier.aspx
If the above does not solve the issue, let us know.
Hope this helps.
Regards,
Alberto Morillo
SQLCoffee.com

Search Server 2010 Express: Open a PDF document from list of search results invokes adobe reader client application with error

Hi community,
I set up search server 2010 express on a windows 2008 r2 server.
The Adobe PDF iFilter 9 64 bit is installed and search is correctly configured to find PDF-files.
When doing a search and clicking on a link of the result page, the PDF is not opened in the browser, instead the adobe reader XI client application (11.0.04) is invoked and an error raised like "could not open document .. check syntax of url..."
Right click on a link to open in new tab works fine. And PDF-Files from other arbitrary Internet Sites opens in browser correctly. Moreover when configure Adobe Acrobat Pro 9 as default application on the client it also open in Browser correctly.
I noticed googling the web there are several challenges when dealing with PDF-files in sharepoint. The following settings are made so far:
1. In IE: Add-On to open PDF in Browser is enabled for all sites.
2. Client Integration is enabled
3. The OpenControl attribute in the DOCICON.xml is left empty OpenControl="" for the pdf entry.
4. The Browser File Handling is set to "Permissive".
Please feel free to ask for more information if needed.
I appreciate any help on this. I don't know what to do further.
Thanks in advance.

Thanks for the reply.
Before responding to your points I want to give a little more context:
We have an intranet based on pure html and a little aspx containing many of those pdf- files. By clicking on the links in the intranet the files open correctly in browser handled by the adobe plugin. Now we set up this search server crawling the file system
accessed through a share to the root folder of the intranet. In the search server settings a host mapping rule is applied to replace the file://[share] with http://[intranet host+domain+port] to access files over http.
And now to answer your question. The resulting urls are the same, copying the link from intranet and copying the link from the search result (except some case issues).
The event viewer not seem to show any errors on this, though I'm not very familiar using it.
If any further information are from interest and any ideas come to your mind - please let me know.
Thanks.

MDNSResponder Client application bug

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