Strange MDB behaviour: All MDBs in pool consuming a single message.

Greetings,
I'm noticing rather bizzarre behaviour with an MDB. The MDB in question does nothing
more than consume a message, to a tiny bit of processing, and sends to another JMS
queue.
I set the max pool size to 2, initial pool size to 2. I then put a single JMS message
onto the queue that the MDB is bound to. This is where the problem starts. Both
MDBs in the pool consume the said message (and I end up with two messages in my outbound
queue). I have confirmed that indeed only one message is placed on the queue the
MDBs are bound to. If I set the pool sizes to larger values, all the MDBs in the
pool still end up consuming that one message.
Any ideas?
-Matt.
P.S. Crossposting to .ejb.ejb20

I'm not sure what the problem can be, but check that:
1- you're really using a queue and not a topic.
2- your transaction didn't roll back. Catch any throwables in onMessage() to
make sure.
Does this fix it?
Emmanuel
"Matthew" <[email protected]> wrote in message
news:3cd7fb5c$[email protected]..
>
Greetings,
I'm noticing rather bizzarre behaviour with an MDB. The MDB in questiondoes nothing
more than consume a message, to a tiny bit of processing, and sends toanother JMS
queue.
I set the max pool size to 2, initial pool size to 2. I then put a singleJMS message
onto the queue that the MDB is bound to. This is where the problemstarts. Both
MDBs in the pool consume the said message (and I end up with two messagesin my outbound
queue). I have confirmed that indeed only one message is placed on thequeue the
MDBs are bound to. If I set the pool sizes to larger values, all the MDBsin the
pool still end up consuming that one message.
Any ideas?
-Matt.
P.S. Crossposting to .ejb.ejb20

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Strange transaction behaviour on WLS conn pool

I am using BEA WLS 8 anyway
What I have done:
1. I developed EAR and deployed it on BEA WLS.
2. I made conn pool and corresponding Data Source.
What I am doing:
1. I am using select ... for update nowait statement for row locking
The issue:
1. user-1 as operator login to app and select 1 record (select ... for update nowait) which supposed to lock particular selected row.
2. user-2 as supervisor login to app and select the same record (select ... for update nowait) via different menu of course.
3. And the error is not showing. I am expecting resource busy error due to row locking
My investigation:
1. When user-1 locks particular row. I could see the lock session still holding the row.
2. When user-2 do whatever it does esp on committing a transaction, the locking that belongs to user-1 get lost.
3. When user-2 is not committing any transaction but gets logout from app, the locking that belongs to user-1 get lost too.
My suspect:
1. Kind of shared transaction session or something.
How to solve this issue?
Is there something to do with conn pool settings on BEA WLS?
Regards
Eric

Hi Joe,
I have done your instructions and this is the report.
I used BEA's Oracle Driver (Type 4) Versions:8.1.7.9.0.1.9.2.0
URL: jdbc:bea:oracle://ip_address:my_port;spyAttributes=(log=(file)spy.log;timestamp=yes;logTName=yes)
Driver Classname: weblogic.jdbc.oracle.OracleDriver
For extra information (perhaps could help) this is my connection pooling settings:
initial capacity 1
maximum capacity 15
capacity increment 1
statement cache type LRU
statement cache size 10
Login Delay: 0 seconds
Seconds to trust an idle pool connection: 0 seconds
Remove Infected Connections Enabled: true
Allow Shrinking: true
Shrink Frequency: 900 seconds
Enable Connection Leak Profiling: false
Enable Connection Profiling: false
Test Frequency: 0 seconds
Test Reserved Connections: false
Test Created Connections: false
Connection Reserve Timeout: 10 seconds
Connection Creation Retry Frequency: 0 seconds
Inactive Connection Timeout: 0 seconds
Maximum Waiting for Connection: 2147483647
Maximum Connections Made Unavailable: 0
Test Table Name: SQL SELECT 1 FROM DUAL
Init SQL: blank here
And here is my Data Source settings:
Row Prefetch Enabled: false
Row Prefetch Size: 48
Stream Chunk Size: 256 bytes
Honor Global Transactions: true
Emulate Two-Phase Commit for non-XA Driver: false
And this is the spy.log
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:35.997)>> Connection[1].getMetaData()
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:35.013)>> OK (DatabaseMetaData[1])
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:35.013)>> DatabaseMetaData[1].getDatabaseProductName()
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:35.013)>> OK (Oracle)
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:35.013)>> DatabaseMetaData[1].getDatabaseProductVersion()
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:35.013)>> OK (10.2.0.2.0)
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:35.013)>> Connection[1].close()
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:35.013)>> OK
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.482)>> Connection[2].getTransactionIsolation()
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.482)>> OK (2)
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.497)>> Connection[2].prepareStatement(String sql)
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.497)>> sql = SELECT 1 FROM DUAL
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.528)>> OK (PreparedStatement[1])
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.528)>> PreparedStatement[1].execute()
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.544)>> OK (true)
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.544)>> PreparedStatement[1].getResultSet()
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.544)>> OK (ResultSet[1])
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.544)>> ResultSet[1].close()
spy(ExecuteThread: '0' for queue: 'weblogic.admin.HTTP')(2008/07/08 11:35:39.544)>> OK
spy(ExecuteThread: '2' for queue: 'weblogic.admin.RMI')(2008/07/08 11:48:23.653)>> Connection[2].rollback()
spy(ExecuteThread: '2' for queue: 'weblogic.admin.RMI')(2008/07/08 11:48:23.653)>> OK
spy(ExecuteThread: '2' for queue: 'weblogic.admin.RMI')(2008/07/08 11:48:23.653)>> Connection[2].close()
spy(ExecuteThread: '2' for queue: 'weblogic.admin.RMI')(2008/07/08 11:48:23.669)>> OK
Hope this adequate to find out the problems.
Regards

Starvation in EJB/MDB thread pool ?

I am re-posting this article including the acronym EJB in the subject so that the EJB experts don't overlook this question. This question was moved from the JMS newsgroup to this newsgroup by a BEA moderator.
Our application receives 10 different types of messages on one queue each. Thus we have 10 queues (MQ as a Foreign JMS provider with MDBs in a WLS). We have MDBs processing each of these queues. The producer (mainframe) that sends messages to these queues operates in batch mode.
Option (1) Configure all MDBs in the same custom thread pool. If a blast of 500 messages arrives on one of the queues and all the threads start consuming messages, what happens to new messages that arrive on other queues ? Do they have to wait until these 500 messages are processed ? I would like someone from the BEA JMS implementation team to comment on this.
Option (2) Configure smaller custom thread pools - one for each queue. Solves the problem above. Let us say we allocate 2 threads per MDB in custom thread pools. This ensures that none of the queues starve, however, if there is a practical limit on the maximum number of threads that can be configured, then this option introduces an inefficiency. What if there are 200 messages in one queue and zero messages in all others ? We are allowing only two threads to process those 200 messages while the other threads just sit and watch.

I am re-posting this article including the acronym EJB in the subject so that the EJB experts don't overlook this question. This question was moved from the JMS newsgroup to this newsgroup by a BEA moderator.
Our application receives 10 different types of messages on one queue each. Thus we have 10 queues (MQ as a Foreign JMS provider with MDBs in a WLS). We have MDBs processing each of these queues. The producer (mainframe) that sends messages to these queues operates in batch mode.
Option (1) Configure all MDBs in the same custom thread pool. If a blast of 500 messages arrives on one of the queues and all the threads start consuming messages, what happens to new messages that arrive on other queues ? Do they have to wait until these 500 messages are processed ? I would like someone from the BEA JMS implementation team to comment on this.
Option (2) Configure smaller custom thread pools - one for each queue. Solves the problem above. Let us say we allocate 2 threads per MDB in custom thread pools. This ensures that none of the queues starve, however, if there is a practical limit on the maximum number of threads that can be configured, then this option introduces an inefficiency. What if there are 200 messages in one queue and zero messages in all others ? We are allowing only two threads to process those 200 messages while the other threads just sit and watch.

MDB on OC4J consuming from a forign JMS Server

I would like to create MDBs and deploy them to OC4J. But these MDBs need to consume messages from non-AQ JMS Servers. We are currently using MDBs in OC4J that consume from Oracle AQ using resource adapters. But we now have a need to use other JMS servers such as OpenJMS and JbossMQ.
I have read documents that seem to indicate
Message-driven beans are supported only for Oracle JMS.
Does this mean I cannot create a resource adapter for JbossMQ and deploy a MDB to OC4J that consumes from this JMS Server?
Any help would be most appreciated!
Thanks, Paul.

Anybody has faced similar issue?

Strange memory behaviour using the System.Collections.Hashtable in object reference

Dear all,
Recently I came across a strange memory behaviour when comparing the system.collections.hashtable versus de scripting.dictionary object and thought to analyse it a bit in depth. First I thought I incorrectly destroyed references to the class and
child classes but even when properly destroying them (and even implemented a "SafeObject" with deallocate method) I kept seeing strange memory behaviour.
Hope this will help others when facing strange memory usage BUT I dont have a solution to the problem (yet) suggestions are welcome.
Setting:
I have a parent class that stores data in child classes through the use of a dictionary object. I want to store many differenct items in memory and fetching or alteging them must be as efficient as possible using the dictionary ability of retrieving key
/ value pairs. When the child class (which I store in the dictionary as value) contains another dictionary object memory handeling is as expected where all used memory is release upon the objects leaving scope (or destroyed via code). When I use a system.collection.hashtable
no memory is released at all though apears to have some internal flag that marks it as useable for another system.collection.hashtable object.
I created a small test snippet of code to test this behaviour with (running excel from the Office Plus 2010 version) The snippet contains a module to instantiate the parent class and child classes that will contain the data. One sub will test the Hash functionality
and the other sub will test the dictionary functionality.
Module1
Option Explicit
Sub testHash()
Dim Parent As parent_class
Dim d_Count As Double
'Instantiate parent class
Set Parent = New parent_class
'Create a child using the hash collection object
Parent.AddChildHash "TEST_hash"
Dim d_CycleCount As Double
d_CycleCount = 50000
'Add dummy data records to the child container with x amount of data For d_Count = 0 To d_CycleCount
Parent.ChildContainer("TEST_hash").InsertDataToHash CStr(d_Count), "dummy data"
Next
'Killing the parent when it goes out of scope should kill the childs. (Try it out and watch for the termination debug messages)
'According to documentation and debug messages not really required!
Set Parent.ChildContainer("TEST_hash") = Nothing
'According to documentation not really as we are leaving scope but just to be consistent.. kill the parent!
Set Parent = Nothing
End Sub
Sub testDict()
Dim Parent As parent_class
Dim d_Count As Double
'Instantiate parent class
Set Parent = New parent_class
'Create a child using the dictionary object
Parent.AddChildDict "TEST_dict"
Dim d_CycleCount As Double
d_CycleCount = 50000
'Blow up the memory with x amount of records
Dim s_SheetCycleCount As String
s_SheetCycleCount = ThisWorkbook.Worksheets("ButtonSheet").Range("K2").Value
If IsNumeric(s_SheetCycleCount) Then d_CycleCount = CDbl(s_SheetCycleCount)
'Add dummy data records to the child container
For d_Count = 0 To d_CycleCount
Parent.ChildContainer("TEST_dict").InsertDataToDict CStr(d_Count), "dummy data"
Next
'Killing the parent when it goes out of scope should kill the childs. (Try it out and watch for the termination debug messages)
'According to documentation and debug messages not really required!
Set Parent.ChildContainer("TEST_dict") = Nothing
'According to documentation not really as we are leaving scope but just to be consistent.. kill the parent!
Set Parent = Nothing
End Sub
parent_class:
Option Explicit
Public ChildContainer As Object
Private Counter As Double
Private Sub Class_Initialize()
Debug.Print "Parent initialized"
Set ChildContainer = CreateObject("Scripting.dictionary")
End Sub
Public Sub AddChildHash(ByRef ChildKey As String)
If Not ChildContainer.Exists(ChildKey) Then
Dim TmpChild As child_class_hashtable
Set TmpChild = New child_class_hashtable
ChildContainer.Add ChildKey, TmpChild
Counter = Counter + 1
Set TmpChild = Nothing
End If
End Sub
Public Sub AddChildDict(ByRef ChildKey As String)
If Not ChildContainer.Exists(ChildKey) Then
Dim TmpChild As child_class_dict
Set TmpChild = New child_class_dict
ChildContainer.Add ChildKey, TmpChild
Counter = Counter + 1
Set TmpChild = Nothing
End If
End Sub
Private Sub Class_Terminate()
Debug.Print "Parent being killed, first kill all childs (if there are any left!) - muahaha"
Set ChildContainer = Nothing
Debug.Print "Parent killed"
End Sub
child_class_dict
Option Explicit
Public MemmoryLeakObject As Object
Private Sub Class_Initialize()
Debug.Print "Child using Scripting.Dictionary initialized"
Set MemmoryLeakObject = CreateObject("Scripting.Dictionary")
End Sub
Public Sub InsertDataToDict(ByRef KeyValue As String, ByRef DataValue As String)
If Not MemmoryLeakObject.Exists(KeyValue) Then MemmoryLeakObject.Add KeyValue, DataValue
End Sub
Private Sub Class_Terminate()
Debug.Print "Child using Scripting.Dictionary terminated"
Set MemmoryLeakObject = Nothing
End Sub
child_class_hash:
Option Explicit
Public MemmoryLeakObject As Object
Private Sub Class_Initialize()
Debug.Print "Child using System.Collections.Hashtable initialized"
Set MemmoryLeakObject = CreateObject("System.Collections.Hashtable")
End Sub
Public Sub InsertDataToHash(ByRef KeyValue As String, ByRef DataValue As String)
If Not MemmoryLeakObject.ContainsKey(KeyValue) Then MemmoryLeakObject.Add KeyValue, DataValue
End Sub
Private Sub Class_Terminate()
Debug.Print "Child using System.Collections.Hashtable terminated"
Set MemmoryLeakObject = Nothing
End Sub
Statistics:
TEST: (Chronologically ordered)
1.1 Excel starting memory: 25.324 kb approximately
Max memory usage after hash (500.000 records) 84.352 kb approximately
Memory released: 0 %
1.2 max memory usages after 2nd consequtive hash usage 81.616 kb approximately
"observation:
- memory is released then reused
- less max memory consumed"
1.3 max memory usages after 3rd consequtive hash usage 80.000 kb approximately
"observation:
- memory is released then reused
- less max memory consumed"
1.4 Running the dictionary procedure after any of the hash runs will start from the already allocated memory
In this case from 80000 kb to 147000 kb
Close excel, free up memory and restart excel
2.1 Excel starting memory: 25.324 kb approximately
Max memory usage after dict (500.000 records) 90.000 kb approximately
Memory released: 91,9%
2.2 Excel starting memory 2nd consequtive dict run: 27.552 kb approximately
Max memory usage after dict (500.000 records) 90.000 kb approximately
Memory released: 99,4%
2.3 Excel starting memory 3rd consequtive dict run: 27.712 kb approximately
Max memory usage after dict (500.000 records) 90.000 kb approximately
Memory released:

Hi Cor,
Thank you for going through my post and took the time to reply :) Most apreciated. The issue I am facing is that the memory is not reallocated when using mixed object types and is not behaving the same. I not understand that .net versus the older methods
use memory allocation differently and perhaps using the .net dictionary object (in stead of the scripting.dictionary) may lead to similar behaviour. {Curious to find that out -> put to the to do list of interesting thingies to explore}
I agree that allocated memory is not a bad thing as the blocks are already assigned to the program and therefore should be reallocated with more performance. However the dictionary object versus hashtable perform almost identical (and sometimes even favor
the dictionary object)
The hashtable is clearly the winner when dealing with small sets of data.
The issue arises when I am using the hash table in conjunction with another type, for example a dictionary, I see that the dictionary object's memory is stacked on top of the claimed memory space of the hashtable. It appears that .net memory allocation and
reuse is for .net references only. :) (Or so it seems)
In another example I got with the similar setup, I see that the total used memory is never released or reclaimed and leakage of around 20% allocated memory remains to eventually crash the system with the out of memory message. (This is when another class
calls the parent class that instantiates the child class but thats not the point of the question at hand)
This leakage drove me to investigate and create the example of this post in the first place. For the solution with the class -> parent class -> child class memory leak I switched all to dictionaries and no leakage occurs anymore but nevertheless thought
it may be good to share / ask if anyone else knows more :D (Never to old to learn something new)

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import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.border.*;
import java.awt.Component;
import java.awt.Color;
import java.awt.Rectangle;
import java.util.*;
import java.awt.*;
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Hi VV!
thanks for the reply - now the table isnt all highlight when loaded, but as for cell celection..thats a different matter. I did have myTable.setCellSelectionEnabled(true); but no, the cell behaviour is really, eally weird, quite hard to explain, but here goes.
If i try to select cell D1 and D2 - D1 is selected, D2, E2,F2 and so on become selected. If i try to add D3 to the mix, the entire row 3 is selected, and as soon as i let go of the mouse button, the entire table except row 1 gets selected. really really weird. Below is my tableModel and what i do to the table. Thanks for your help,
regards
Rupz
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     // This row-header is made of labels whose Borders,
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     numCols = myTable.getRowCount();
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     Color aForeground = aComponent.getForeground();
     Border      border = (Border)UIManager.getDefaults().get("TableHeader.cellBorder");
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      * Creating a panel to be used as the row header.
      * Since I'm not using any LayoutManager,
      * a call to setPreferredSize().
     JPanel pnl = new JPanel((LayoutManager)null);
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     pnl.setPreferredSize(dim);
     // Adding the row header labels
     dim.height = rowHeight;
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       JLabel lbl = new JLabel(Integer.toString(ii+1), SwingConstants.CENTER);
       lbl.setFont(aFont);
       lbl.setBackground(aBackground);
       lbl.setForeground(aForeground);
       lbl.setBorder(border);
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//                for(int x = 0; x < rows; x++) {
//                      myCell temp = new myCell(new Integer(x+1));
//                  super.setValueAt(temp, x, 0);
        for(int x =0 ; x < rows; x++)
         for (int y = 0; y < cols; y++)
          // we initialize it here
          super.setValueAt(new myCell(rows,cols,("")),x,y);
     mySpreadsheet = aSpreadsheet;
     public boolean isCellEditable(int row, int column) {return true;}

Strange POF behaviour in 3.6.1.3

Hi All,
We have been seeing some strange POF behaviour in 3.6.1.3 paricularly around classes with boolean fields.
Here is my test case:
package org.gridman.pof;
import com.rbs.odc.dashboard.server.cluster.model.Case;
import com.tangosol.io.pof.ConfigurablePofContext;
import com.tangosol.io.pof.PofReader;
import com.tangosol.io.pof.PofWriter;
import com.tangosol.io.pof.PortableObject;
import com.tangosol.io.pof.reflect.PofValue;
import com.tangosol.io.pof.reflect.PofValueParser;
import com.tangosol.io.pof.reflect.SimplePofPath;
import com.tangosol.util.Binary;
import com.tangosol.util.ExternalizableHelper;
import java.io.IOException;
public class JK implements PortableObject {
    private String stringField;
    private boolean booleanFieldOne;
    private boolean booleanFieldTwo;
    public JK() {
    public JK(boolean booleanFieldOne, boolean booleanFieldTwo, String stringField) {
        this.booleanFieldOne = booleanFieldOne;
        this.booleanFieldTwo = booleanFieldTwo;
        this.stringField = stringField;
    @Override
    public void readExternal(PofReader pofReader) throws IOException {
        stringField = pofReader.readString(0);
        booleanFieldOne = pofReader.readBoolean(1);
        booleanFieldTwo = pofReader.readBoolean(2);
    @Override
    public void writeExternal(PofWriter pofWriter) throws IOException {
        pofWriter.writeString(0, stringField);
        pofWriter.writeBoolean(1, booleanFieldOne);
        pofWriter.writeBoolean(2, booleanFieldTwo);
    public static void main(String[] args) {
        ConfigurablePofContext pofContext = new ConfigurablePofContext("jk-pof-config.xml");
        JK value = new JK(false, true, "JK");
        Binary binary = ExternalizableHelper.toBinary(value, pofContext);
        PofValue pofValue = PofValueParser.parse(binary, pofContext);
        PofValue childOne = new SimplePofPath(0).navigate(pofValue);
        PofValue childTwo = new SimplePofPath(1).navigate(pofValue);
        PofValue childThree = new SimplePofPath(2).navigate(pofValue);
        System.out.println(childOne.getValue());
        try {
            System.out.println(childTwo.getValue());
        } catch (Exception e) {
            System.out.println("Exception: " + e.getMessage());
        try {
            System.out.println(childThree.getValue());
        } catch (Exception e) {
            System.out.println("Exception: " + e.getMessage());
}and the jk-pof-config.xml file used above...
<pof-config>
    <user-type-list>
        <include>coherence-pof-config.xml</include>
        <user-type>
            <type-id>3001</type-id>
            <class-name>org.gridman.pof.JK</class-name>
        </user-type>
    </user-type-list>
</pof-config>When you run the main method of the class above you would expect to get
JK
false
true... but what you get is...
JK
null
Exception: -34 is an invalid typeWhat is going on? The booleanFieldOne seems to have been serialized as type -34 which is PofConstants.V_BOOLEAN_TRUE which makes sense but the code to deserialize the field cannot handle type -34. The booleanFieldTwo comes back as null and is serialized as type -65 which is PofConstants.T_UNKNOWN
Where this causes us a problem is if we do a query with a filter like this...
new EqualsFilter(new PofExtractor(null, 1), true);...it will break whenever it tries to extract the POF value where booleanFieldOne is true.
I know we can fix this by always specifying the type, so this will work
new EqualsFilter(new PofExtractor(Boolean.class, 1), true);and this will work too wheras it fails without specifying the type...
childTwo.getValue(Boolean.class);So although there are work-arounds it seems very strange.
What is even stranger is that if you do not serialize the stringField so the readExternal and writeExtrnal methods look like this
@Override
public void readExternal(PofReader pofReader) throws IOException {
    //stringField = pofReader.readString(0);
    booleanFieldOne = pofReader.readBoolean(1);
    booleanFieldTwo = pofReader.readBoolean(2);
@Override
public void writeExternal(PofWriter pofWriter) throws IOException {
    //pofWriter.writeString(0, stringField);
    pofWriter.writeBoolean(1, booleanFieldOne);
    pofWriter.writeBoolean(2, booleanFieldTwo);
}The you get this output...
null
false
Exception: -34 is an invalid typeiNow the stringField is null (as we have not serialized it) but the booleanFieldOne is now being desrialized correctly as a boolean false. We have noticed that if you have a boolean as the first field you serialize in the writeExternal method then it is serialized as POF type -11 which is PofConstants.T_BOOLEAN and will be deserialized as the correct true or false value.
Cheers,
JK

Hi René,
Just changing the field types to Boolean like this...
private Boolean booleanFieldOne;
private Boolean booleanFieldTwo;made no difference. But then changing the writeExternal method to use writeObject instead of writeBoolean did fix it and the types of both fields are -11 or PofConstants.T_BOOLEAN
@Override
public void writeExternal(PofWriter pofWriter) throws IOException {
    pofWriter.writeString(0, stringField);
    pofWriter.writeObject(1, booleanFieldOne);
    pofWriter.writeObject(2, booleanFieldTwo);
}So using writeObject instead of writeBoolean would be another fix, but obviously most people would pick writeBoolean to store a boolean value.
JK

Strange JFRAME behaviour under Jdk 1.5

I have the following extracted code :
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import java.awt.geom.*;
public class DrawPie extends JFrame{
     private HashMap ColourMap=new HashMap();;
     private HashMap DataMap=new HashMap();
     private double Total_Val=0;
     private int startAngle=0;
     private int arcAngle=0;
     public DrawPie(HashMap DataMap){
     super ("Pie Chart Analysis");
          this.DataMap=DataMap;
     //     System.out.println("DATAMap-->"+DataMap);
     // getContentPane().setBackground(Color.white);
          setSize(500,500);
          setVisible(true);
     public void paint(Graphics g){
          super.paint (g);
          Graphics2D g2 = (Graphics2D) g;
          DrawPieChart(g);
This programme work fine under jdk1.4.2 or below at the time when the Jframe or windows is resized or icon minimised or maximised.
But when it was compiled using latest jdk1.5 , unexpected strange result happen , the pie chart draw using java 2d
g2.fill(new Arc2D.Double(30, 30, 200,200,startAngle,arcAngle
, Arc2D.PIE));
wil behaved strangely, the moment the JFrame or windows is resize or dragged.
The pie chart will disappear if the windows is resized , However if the window is minimised and restore back to normal size , pie chart will reappear and subsequently lost completely if the windows is dragged resulted in the size changes.
I was puzzled by this strange swing behaviour , any resized or windows minimise or maximise would not result in the lost of pie chart as long as the jdk is not 1.5 ! Was it due to swing fundamental changes incorporated in the latest release?
Any suggestion?
Thank

ok I see what you have done,
now a few tips in drawing something on your frame:
never override the paint method of your main Frame (like you did)
to draw something on it you simply override the contentPane's paint method
and to make your own contentPane you simply make one by making a new Class
that extends say JPanel and assign it as a contentPane of your Frame(like I did)
And in this Paint method you can draw whatever you like it will be properly uptated!!!
All the best keep up the good work!
ps. try the code bellow.
import javax.swing.*;
public class DrawPie1 extends JFrame {
private double Total_Val=0;
private int startAngle=0;
private int arcAngle=0;
private MyMainPanel mainPan;
public DrawPie1()
super ("Pie Chart Analysis");
mainPan = new MyMainPanel();
setContentPane(mainPan);
//public void paint(Graphics g) //Do not override the paint method of your main frame!!
// super.paint (g);
// Graphics2D g2 = (Graphics2D) g;
// g2.setPaint(Color.red);
// g2.fill(new Arc2D.Double(30, 30, 200,200,0,78
// , Arc2D.PIE));
public static void main(String args[])
DrawPie1 pie=new DrawPie1();
pie.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
pie.setSize(400,300);
pie.setVisible(true);
//**** Second Class
import javax.swing.*;
import java.awt.*;
import java.awt.geom.Arc2D;
public class MyMainPanel extends JPanel
public MyMainPanel()
public void paint(Graphics g)
super.paint (g);
Graphics2D g2 = (Graphics2D) g;
g2.setPaint(Color.red);
g2.fill(new Arc2D.Double(30, 30, 200,200,0,78
, Arc2D.PIE));
}

Strange Portal Behaviour

Hi All,
I'm having problems with a portal since I added an applet to one of the portlets using an HTML <OBJECT> tag. The applet requires a java console to load up and once this is complete, for some reason the default portlet of the portal is refreshed (More precisely the begin action is fired).
I'm assuming that this is related to the java console because repeating the action above once the console has loaded does not cause the default portlet to be refreshed again a second time.
Has anyone experienced similar behaviour?
If it helps, the code in the jsp is:
<netui-data:repeater dataSource="{pageFlow.pieChart}">
<netui-data:repeaterHeader>
<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
height="200" width="650" hspace="10"
standby="Loading Requested Chart........">
<PARAM name="code" value="X_PieChart.class">
<PARAM name="codebase" value="/mpsportal/javaScript/">
<PARAM name="image" value="">
<PARAM name="forecolor" value="555566">
<PARAM name="activecolor" value="cc0000">
<PARAM name="backcolor" value="ffffbe">
<PARAM name="activecolor_shadow" value="ff0000">
<PARAM name="distance" value="8">
</netui-data:repeaterHeader>
<netui-data:repeaterItem>
<PARAM NAME='p<netui:content value="{container.index}"/>' value='<netui:content value="{container.item.name}"/>#<netui:content value="{container.item.value}"/>#0000AA#0000FF#<netui:content value="{container.item.name}"/> - <netui:content value="{container.item.value}"/>##'>
</netui-data:repeaterItem>
<netui-data:repeaterFooter>
<PARAM name="showratios" value="1">
<PARAM name="deep" value="8">
<PARAM name="font" value="verdana#plain#12">
<PARAM name="title" value="">
<PARAM name="titlealign" value="2">
</OBJECT>
</netui-data:repeaterFooter>
</netui-data:repeater>

Hi all,
I am closing this thread as i came to know that i cannot open two threads parallely, about an issue in different forums .
If u have more suggetions reg this issue, please post them in the following thread :
Strange Portal Behaviour in Internet Explorer 8
Regards,
Anupama

Strange viewing behaviour on score page view on Logic 7.2.0 on MacBookPro

I recorded some sequences in Logic 7.2.0 on my MacBookPro and, seeing them in page view mode, I get a strange viewing behaviour: the staffs continue going straight on overshooting the "white delimited page zone". If I try to zoom out I can't obtain the "more pages view" option normally obtained.
If I reopen this song on the logic 7.2.0 situated in my G5 all is fine. Why?
Any idea?
Thanks
Fulvio

Guys, I think this problem has to do with the scale parameter of the instrument set being translated incorrectly on Intel/MPB (quite possibly affecting even the "ALL" instrument set, which has no adjustable parameters). Now, I don't have an Intel Mac or MBP, but based on my recent experiences in PPC and similar problems, plus what I've read here, I think I might be on to something...
I'm going to suggest that you guys who are having problems with staves going off the page to do the following test:
1) Open one of your problematic songs and view the score editor where the off-the-page staves are displayed
2) If you're using the "ALL" instrument set, read on. If not, go to #3 below.
ALL Instrument Set: if you're using this just to see a preliminary version of your score, close the score window, select ALL, and open the score editor. This forces the creation of a new instrument set. Do these staves go off the page? If not, you're good to go. But if they do go off the page...
a) go to your printer settings and make sure that you have valid settings there. This includes the printer type, page size, and scaling. If they're set to default values (like "most recent printer"), be sure to select an actual printer on your system.
b) open the Instrument Set parameters for the set that was created just before. Set the scale parameter to 200%, then make it 50%, then make it 100%. If my theory is correct, your music should now stay on the page.
3) If you're using a custom instrument set repeat steps a) and b) above. See if that clears up the problem.
I'd be curious to know if any of the above fixes the problem for you. Again, it's just a theory, but maybe it has legs...
Best,
-=iS=-

Strange delete behaviour

Hi,
I'm currently facing a very strange Oracle behaviour. First of all, here are the settings:
* 2 CPUs @ 1,6 GHz
* Raid-0 with 2 x 160 GB
* 3 GB RAM
* Windows 2000 Advanced Server
* Oracle Standard 9.2.0.7 using standard settings for the instance
On the machine there is only one db (containing one instance) running, nothing else (beside the OS). The instance has 1GB shared memory assigned and contains about 5 GB of data distributed in approx. 750 tables.
I'm trying to delete all non-master data from the instance via simple "delete <table> where id in (select id from some_table)" statements in a script. This works perfectly (approx. 2-3 million deleted records per hour), processor load is about 50%, the Windows system monitor shows few hundred kilobytes of data read/written per minute.
But this changes after maybe one hour running time. CPU load sinks to 4-5% and data transfer rate rises to approx. 2GB(!!) per minute. I tried to abort the deleting process and rebuild all indexes as well statistics of the schema affected, but without any improvements. The only thing working at the moment is commiting the transaction and shutting down/restarting the instance. Afterwards everything is working fine (without index/statistic rebuilding!), but only for the time period mentioned before.
Does anyone know what could be the source of this behaviour? Anyone got any hints what to change for a better performance? I already thought of bulk inserting the whole schema in a cloned schema without constraints, but 700 tables contain a lot of constraints and triggers, so a consistent insert would be a pain in the tush...
Thanks in advance!

No, the disks are internal as is the raid controller. And strangely enough, not writing causes a high data rate, but reading! I assume that if the caches are too small the DB starts reading the indexes time and again, but 2 GB of index reading per minute??? No way, I say. Few hundred kilobytes or even a few megabytes makes sense in my opinion, but not the amount mentioned...
Truncating the tables would be a solution, but have you already tried to empty a 750 table schema with constraints and triggers implementing data inheritance? I have, and it didn't work, afterwards data consistency was not given any more...
I have already tried to delete the data in batches, each followed by a commit operation. But this brought the same result after a while, which was reading GBs of data per minute...

Strange webcache behaviour

Hello,
I am faced with a strange webcache behaviour on my 9.0.4 portal. On conducting load tests on the vanilla portal install (on RedHat Linux 3.0 release), I find that the response is very smooth for sometime, with the the requests per second at a constant 800 req/sec for a certain user load, but after some time (like about 50 minutes), the throughput dramatically falls to about 40-50 rps. At this time, when I try to access the webpage, the response is very slow.
I am trying to access some simple html pages and they are all being served straight out of the cache. Has anyone faced a similar situation?
I tried accessing the Apache HTTP server directly and this problem disappears which leads me to conclude that the problem is probably with the web-cache. When I restart the webcache alone at this point of time, my throughput goes up back to normal, only to fail after a similar duration again.
Any inputs on this would be very helpful.
Thanks
Jitendra

There are lots of resources available, both in terms of memory and CPU. The machine is cerianly not taxed for resources. I will have to check if it is a machine specific issue.

Strange layout behaviour with TilePane

here is the demo
1.rootLayout have 2 child,controlbox and contentLayout
2.3 button on controlbox
3.contentLayout will add content,when press deffrent button on controlbox
4.watch button "Add TilePane" , strange layout behaviour , what is the matter?
layout picture
|--------------------------------|
|           |                    |
|           |                    |
|           |                    |
|           |                    |
|controlbox | contentLayout     |
| (VBox)    |   (StackPane)      |
|           |                    |
|           |                    |
|           |                    |
|           |                    |
|--------------------------------|
                                        the code
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.ListView;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.TilePane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class testTilePaneLayout extends Application {
     StackPane contentLayout = new StackPane();
     //add content with 2 Button
     public void addContent(){
          VBox vbox = new VBox();
          contentLayout.getChildren().clear();
          contentLayout.getChildren().add(vbox);
          StackPane.setAlignment(vbox,Pos.CENTER);
          Button btn = new Button("Button1");
          Button btn2= new Button("Button2");
          vbox.getChildren().add(btn);
          vbox.getChildren().add(btn2);
     //add content with 2 Button & 1 ListView
     public void addListViewContent(){
          VBox vbox = new VBox();
          contentLayout.getChildren().clear();
          contentLayout.getChildren().add(vbox);
          StackPane.setAlignment(vbox,Pos.CENTER);
          Button btn = new Button("Button1");
          Button btn2= new Button("Button2");
          vbox.getChildren().add(btn);
          vbox.getChildren().add(btn2);
          @SuppressWarnings("rawtypes")
          ListView listView = new ListView();
          vbox.getChildren().add(listView);
     //add content with 2 Button & 1 TilePane
     public void addTilePaneContent(){
          VBox vbox = new VBox();
          contentLayout.getChildren().clear();
          contentLayout.getChildren().add(vbox);
          StackPane.setAlignment(vbox,Pos.CENTER);
          Button btn = new Button("Button1");
          Button btn2= new Button("Button2");
          vbox.getChildren().add(btn);
          vbox.getChildren().add(btn2);
          TilePane tilePane = new TilePane();
          tilePane.setMaxSize(100,100);
          Label lbl = new Label("Label on TilePane");
          tilePane.getChildren().add(lbl);
          vbox.getChildren().add(tilePane);
     public void start(Stage stage) {
          stage.setResizable(false);
          stage.centerOnScreen();
          Group root = new Group();
          Scene scene = new Scene(root,800,600);
          stage.setScene(scene);
          //root Layout = StackPane
          StackPane rootLayout = new StackPane();
          root.getChildren().add(rootLayout);
          rootLayout.setMinSize(800,600);
          rootLayout.setMaxSize(800,600);
          //content StackPane
          rootLayout.getChildren().add(contentLayout);
          contentLayout.setMinSize(100, 100);
          contentLayout.setMaxSize(200, 200);
          StackPane.setAlignment(contentLayout,Pos.CENTER);
          //control VBox
          VBox controlBox = new VBox();
          rootLayout.getChildren().add(controlBox);
          controlBox.setMaxSize(100, 200);
          StackPane.setAlignment(controlBox,Pos.CENTER_LEFT);
          //3 control button
          Button btn1 = new Button("Add button");
          Button btn2= new Button("Add Listview");
          Button btn3= new Button("Add TilePane");
          controlBox.getChildren().add(btn1);
          controlBox.getChildren().add(btn2);
          controlBox.getChildren().add(btn3);
          btn1.setOnMousePressed(new EventHandler<MouseEvent>() {
               @Override
               public void handle(MouseEvent arg0) {
                    addContent();
          btn2.setOnMousePressed(new EventHandler<MouseEvent>() {
               @Override
               public void handle(MouseEvent arg0) {
                    addListViewContent();
          btn3.setOnMousePressed(new EventHandler<MouseEvent>() {
               @Override
               public void handle(MouseEvent arg0) {
                    addTilePaneContent();
          stage.show();
     public static void main(String[] args) {
          Application.launch(args);
}Edited by: noregister on Oct 4, 2011 11:30 AM
Edited by: noregister on Oct 4, 2011 11:31 AM

Oh, my bad. I'm actually using a JToggleButton and not a JButton, so the getRootPane().setDefaultButton() doesn't apply because it only takes JButton as an input param. I wonder why it wasn't implemented to take AbstractButton. hmmm.

Strange MDB behaviour: All MDBs in pool consuming a single message.

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