Issue of Java thread

Similar Questions

• Java threading for slide show picture

  Hi, I am a newbie in developing Blackberry app...

  can someone help me, how to create a slideshow of image using Java thread?

  I'm really naïve on this subject

  Thank you

  Well done - you are not such a newbie!

  Maybe I'm missing something...

  public void run() {}

  While (true) {}
  for (i = 0; i< 6;="" i++)="">

  }

  }

  }

• How to call javafx scene for a pure java thread

  I have a server as a thread that starts when the application is running, it will listen to a client, when TI receives a message from the client a scene to appear alongside server.
  
  I get error not a fx thread when I call pure java thread.
  
  need help as soon as possible.

  I think that what you are looking for is the Platform.runLater () function.

  This will allow you to give a Runnable which is scheduled on the thread of FX. Put the code to display the scene and it should work.

  For example:

  Platform.runLater(new Runnable() {
    public void run() {
      // the code here to show the Scene
    }
  });
  

• How should I interpret java thread dumps?

  I have a multi-threaded application, I am running on a BlackBerry 9000.  I suspect there are blocking issues.

  I figured out how to trigger the trace of the stack using javaloader - usb logstacktraces (rather than wait for the alert for error "not responding") and can fetch using javaloader - usb eventlog, but I cannot interpret them.

  When I develop java applications normal can I use ^-to get a thread dump containing the source files, line numbers, and (most importantly) a list of locks and blocks, telling me that has a lock on an object, and which is blocked waiting for a lock to be released (either by calling the wait() method or exit).

  I don't know if this information is in the Blackberry stack traces.

  guid:0x9C3CD62E3320B498 time: Thu Sep 10 15:51:37 2009  severity:0 type:3 app:Java Exception data:
      ForcedStackTraceException
      baconology(160) 33 2 0x482E4000
      baconology(4AA957F5)
       BlockRun
       nap
       0x3EF
      baconology(4AA957F5)
       BlockRun
       waitForBuffer
       0x4BF
      baconology(4AA957F5)
       PiecewiseSourceStream
       read_
       0x14D7
      baconology(4AA957F5)
       PiecewiseSourceStream
       read
       0x1570
      net_rim_cldc-16(4A739706)
       DataSourceInputStream
       read
       0x25AF
      net_rim_media(4A739765)
       MP4Info
       
       0x34E1
      net_rim_media(4A739765)
       MP4Info
       
       0x2DA7
      net_rim_media(4A739765)
       MP4Info
       
       0x2D63
      net_rim_media(4A739765)
       MP4Info
       
       0x33A8
      net_rim_media(4A739765)
       StreamingMediaPlayer
       doRealize
       0x9224
      net_rim_cldc-16(4A739706)
       BasicPlayerImpl
       realize
       0xF80
      baconology(4AA957F5)
       JMFToy
       fabricateAndRealizePlayer
       0x9F5
      baconology(4AA957F5)
       JMFToy$3
       run
       0xD94
      net_rim_cldc-1(4A739706)
       Thread
       run
  

  Given that this thread is blocked waiting to enter the BlockRun.nap () call, I can assume that it is blocked, waiting for a lock on * this *, because otherwise it would be inside the Object.wait () function, waiting for another thread to issue a notifyAll().

  What I need to know is the thread that has the lock, so I can arrange for to be released or not granted at all.

  Each (single-threaded) stack trace begins with the name of the process that owns the thread, followed by the ID process in parentheses, then by the thread ID, then the State of the thread (1 = RUNNABLE, 2 = pending, 3 = TIMED WAITING, 4 = BLOCKED), then the ID of the lock on which thread executes a wait(), or the ID of the lock, the thread is stuck on (waiting to acquire).

  After the stack traces there is a list of the locks. The list shows which own threads which locks and locks Java class names.

  The information contained in the stack traces and the list of locks is sufficient for an automated tool to analyze the dependencies between threads and also find dead-locks (as appropriate). I depeloped such a tool (thus, it is possible, and it's not hard to do), but I'm not free to release him.

• Java Threading

  Hello. I've never worked with before threads, so it's new to me. My goal is to make a program that reads in several text files and stores every word of all text files in a hash map element. If a Word is reproduced, the value of the hasmap will change. I have something that works with a single working file. To make things more efficient when it comes to multiple files, I need files to analyze at the same time. This would therefore require Threading. For the moment, I'm working on something simple, she takes in two text files and treat them simultaneously and just counts the words in the two and returns a single value. For some reason, it does not. I have the thread class

  import java.io.File;
  import java.io.FileNotFoundException;
  import java.util.Scanner;
  
  class WordCountNew extends Thread
  {
     int count;
     private String filename;
  
     public WordCountNew(String filename)
     {
        this.filename = filename;
     }
  
     @Override
     public void run()
     {
        count = 0;      
        try
        {
           Scanner in = new Scanner(new File(filename));
  
           while (in.hasNext())
           {
              in.next();
              System.out.println("in while");
              count++;
           }
           System.out.println(filename + ": " + count);
        }
        catch (FileNotFoundException e)
        {
           System.out.println(filename + " Error");
        }
     }
  }

  And the main class

  public class MainClass {
      public static void main(String args[]) throws InterruptedException
     {
        WordCountNew[] counters = new WordCountNew[2];
        counters[0] = new WordCountNew("Coursework2.txt");
        counters[0].start();
           
        counters[1] = new WordCountNew("Coursework2.txt");
        counters[1].start();
        
        int total = 0;
        for (WordCountNew counter : counters) {
          counter.join();
          total += counter.count;
        }
        System.out.println("Total: " + total);
     }
  
  }

  It does not make the while loop in the thread class, even if it loads the file without problem, and the file is full text. My current performance is
  Coursework2.txt: 0
  Coursework2.txt: 0
  Total: 0
  
  Is there any logical reason as to why the while loop can not be concluded?
  
  See you soon

  Works OK for me

  It seems that you you confused (point to an empty file with the same name)
  ("Try the absolute path like this: WordCountNew("C:/testFolder/testfile.txt ") new;

• Is there a way to see the files opened by java threads

  -environment-
  Java for 64-bit Server VM (build 1.5.0_19 - b02, mixed mode)
  Linux 2.6.9 - 78.0.5.ELsmp #1 SMP Wed Sep 24 12:40:24 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
  Xeon of Intel (r) CPU
  --------------------------
  
  Hi all
  
  I would like to know if, in the course of an outOfMemory, there are ways to:
  1. do you have a list of thread for the time (basically a thread dump)
  2. know the thread which lead to the OOM (even if the thread could well be the 'drop' leading to OOM)
  3. get a summary of the brief files on track to open by thread (basically a dump of the heap) use java.
  4. get a list of files opened by my thread
  
  Our application is regularly faced with outOfMemory (OOM) and I know that this sometimes load important file, so now I'm testing is the use of hprof (-agentlib:hprof = heap = sites, thread = y, depth = 2). Send "kill-3" on my java process creates a file containing a thread dump + memory usage. But it can't help me for question 2.
  
  Regarding question 4, I tried to establish a correlation between the hprof output + pstack + jstack, pmap, but I'm not the info I'm looking for (pstack, jstack do not show the address of open files)
  
  Finally, if this isn't the right forum for my question, please tell me where to post it.
  
  Thank you

  Have you tried - XX: + HeapDumpOnOutOfMemoryError?

  I would use a recent version of Java as Java 6 update 25.

  You can get a list of files opened by looking at/proc / {pid} /fd/ however you should never be allowed to open as many files as you run out of memory.

  If you use a Profiler, you can see that the son made at some point, and where objects are allocated.

  I don't think you can associate files with a wire.

• Use of java Threads in the stored procedures

  Hi good morning all.
  
  I have four different requests. Each of them works with a lot of data and manages almost 20 to 40 seconds.
  If I was running then one by one, then it would take 80-200 seconds of database and user time.
  I know there is a possebility to run queries in sqlj using java market.
  I wrote a little application with 4 wires, but when running it I realized that each thread runs one after the other, but not in parallel mode.
  
  Here is the code:
  /********************************************************************************************************/
  Claire;
  create or replace and compile java sources named as dailyReport
  
  Import Java.util;
  import java. IO;
  import java.sql. *;
  Import oracle.sqlj.runtime.Oracle;
  Import sqlj.runtime.ExecutionContext;
  import java.util.Calendar;
  import impossible;
  
  public class dailyReport extends Thread {}
  public static final String DATE_FORMAT_NOW = "yyyy-MM-dd hh: mm:";
  public static ExecutionContext exec_context = new ExecutionContext();
  
  public static String now() {}
  Calendar cal = Calendar.GetInstance ();
  SimpleDateFormat sdf = new SimpleDateFormat (DATE_FORMAT_NOW);
  Return sdf.format (cal.getTime ());
  }
  
  
  Public Shared Sub runReport (int, String, date1, date2 String sessionID) {}
  try {}
  System.out.println (dailyReport.Now (). ToString());
  View all customers
  dailyReport thread1 = new dailyReport();
  thread2 = new dailyReport() dailyReport;
  dailyReport thread3 = new dailyReport();
  thread4 dailyReport = new dailyReport();
  
  System.out.println (dailyReport.Now (). ToString());
  
  start the threads by using the start method)
  thread1. Run (1, date1, date2, sessionID);
  Thread2.run (2, date1, date2, sessionID);
  Thread2.run (3, date1, date2, sessionID);
  Thread2.run (4, date1, date2, sessionID);
  
  System.out.println (dailyReport.Now (). ToString());
  expect each thread help
  the join method)
  thread1. Join ();
  Thread2.join ();
  thread3. Join ();
  thread4. Join ();
  
  System.out.println (dailyReport.Now (). ToString());
  #sql [exec_context] {commit};
  System.out.println (dailyReport.Now (). ToString());
  Oracle.Close ();
  System.out.println (dailyReport.Now (). ToString());
  } catch (SQLException e) {}
  System.Err.println ("SQLException" + e);
  System.Exit (1);
  } catch (Exception e) {}
  System.Err.println ("Exception" + e);
  System.Exit (1);
  }
  }
  
  public void run (int x, int sessionID String date1, date2 string) {}
  try {}
  If (x == 1) {}
  {#sql [exec_context]
  delete from bx_income where sessionID =: sessionID
  };
  
  {#sql [exec_context]
  insert into bx_income (field_name, amount, sessionID)
  a.Field_Name, abs (sum (amount)) "AMOUNT", select: sessionID
  de)
  Select b.field_name, l.saldo_vhd_nacval 'AMOUNT. '
  of arH_saldo_ls l, bx_setup_acct b
  where l.date_oper = to_date(:date1,'yyyymmdd')
  and l.licsch like b.accnt |' %'
  Union of all the
  Select b.field_name, l.saldo_vhd_nacval 'AMOUNT. '
  of arH_saldo_ls_fil l, bx_setup_acct b
  where l.date_oper = to_date(:date1,'yyyymmdd')
  and l.licsch like b.accnt |' %'
  ) a
  A.field_name group
  };
  } else if (x == 2) {}
  {#sql [exec_context]
  delete from bx_exchange where sessionID =: sessionID
  };
  
  {#sql [exec_context]
  insert into bx_exchange (field_name, amount, sessionID)
  Select a.field_name, sum (DC) / 1000 'EXCHANGE',: sessionID
  de)
  Select b.field_name,
  (case
  When kredit love b.accnt |' %' and debet as 8681% ' then - summa_v_nacval
  When debet like b.accnt |' %' and kredit as 6681% ' then summa_v_nacval
  end) "DC".
  arh_dd d, bx_setup_acct b
  where date_oper between to_date(:date1,'yyyymmdd') and to_date(:date2,'yyyymmdd')
  and b.foreign_ccy = 1
  and)
  d.Kredit like 6681% ' or
  d.Debet like 8681% '
  )
  and)
  d.Debet like b.accnt |' %' or
  d.Kredit like b.accnt |' %'
  )
  Union of all the
  Select b.field_name,
  (case
  When kredit love b.accnt |' %' and debet as 8681% ' then - summa_v_nacval
  When debet like b.accnt |' %' and kredit as 6681% ' then summa_v_nacval
  end) "DC".
  arh_dd_fil d, bx_setup_acct b
  where date_oper between to_date(:date1,'yyyymmdd') and to_date(:date2,'yyyymmdd')
  and b.foreign_ccy = 1
  and)
  d.Debet like 6681% ' or
  d.Kredit like 8681% '
  )
  and)
  d.Debet like b.accnt |' %' or
  d.Kredit like b.accnt |' %'
  )
  ) a
  Group of FieldName
  };
  } else if (x == 3) {}
  {#sql [exec_context]
  delete from bx_middle where sessionID =: sessionID
  };
  
  {#sql [exec_context]
  insert into bx_middle (field_name, db_total, db_foreign, cr_total, cr_foreign, sessionID)
  Select field_name, sum (DB_TOTAL) / 1000 'DB_TOTAL', sum (DB_FOREIGN) / 1000 'DB_FOREIGN', sum (CR_TOTAL) / 1000 'CR_TOTAL', sum (CR_FOREIGN) / 1000 'CR_FOREIGN',: sessionID
  de)
  Select field_name, 'DB_TOTAL' db, db * foreign_ccy 'DB_FOREIGN', 'CR_TOTAL', cr cr * foreign_ccy "CR_FOREIGN".
  de)
  Select a.field_name,
  a.foreign_ccy,
  (case
  When < 0 then dc *(-1) dc
  0 otherwise
  end) "DB."
  (case
  When dc > = 0 then dc
  0 otherwise
  end) "CR."
  de)
  Select b.field_name,
  b.foreign_ccy,
  (case
  When kredit love b.accnt |' %' then summa_v_nacval
  When debet like b.accnt |' %' then (-1) * summa_v_nacval
  end) "DC".
  arh_dd d, bx_setup_acct b
  where date_oper between to_date(:date1,'yyyymmdd') and to_date(:date2,'yyyymmdd')
  and)
  Debet not like 8681% ' or
  Kredit not like 6681% '
  )
  and)
  d.Debet like b.accnt |' %' or
  d.Kredit like b.accnt |' %'
  )
  Union of all the
  Select b.field_name,
  b.foreign_ccy,
  (case
  When kredit love b.accnt |' %' then summa_v_nacval
  When debet like b.accnt |' %' then (-1) * summa_v_nacval
  end) "DC".
  arh_dd_fil d, bx_setup_acct b
  where date_oper between to_date(:date1,'yyyymmdd') and to_date(:date2,'yyyymmdd')
  and)
  Debet not like 8681% ' or
  Kredit not like 6681% '
  )
  and)
  d.Debet like b.accnt |' %' or
  d.Kredit like b.accnt |' %'
  )
  ) a
  ) a
  ) a
  Group of FieldName
  };
  } else if (x == 4) {}
  {#sql [exec_context]
  delete from bx_outcome where sessionID =: sessionID
  };
  
  {#sql [exec_context]
  insert into bx_outcome (field_name, amount, sessionID)
  a.Field_Name, abs (sum (amount)) "AMOUNT", select: sessionID
  de)
  Select b.field_name, l.saldo_ish_nacval 'AMOUNT. '
  of arH_saldo_ls l, bx_setup_acct b
  where l.date_oper = to_date(:date2,'yyyymmdd')
  and l.licsch like b.accnt |' %'
  Union of all the
  Select b.field_name, l.saldo_vhd_nacval 'AMOUNT. '
  of arH_saldo_ls_fil l, bx_setup_acct b
  where l.date_oper = to_date(:date2,'yyyymmdd')
  and l.licsch like b.accnt |' %'
  ) a
  A.field_name group
  };
  }
  } catch (SQLException e) {}
  System.Err.println ("SQLException" + e);
  System.Exit (1);
  } catch (Exception e) {}
  System.Err.println ("Exception" + e);
  System.Exit (1);
  }
  }
  }
  /
  
  create or replace procedure run_Daily_Report (x number, String, name of file in string DirName)
  is the language java name 'dailyReport.runReport (int, java.lang.String, java.lang.String);
  /
  /********************************************************************************************************/
  
  Maybe I shouldn't run threads with the thread < N > .run but with thread < N > m:System.NET.HttpListener.start.
  Please help me to reslove this problem.
  
  Best regards.
  Murad balde.

  user11221084 wrote:
  I wrote a little application with 4 wires, but when running it I realized that each thread runs one after the other, but not in parallel mode.

  Which is the expected behavior, because Oracle JVM uses a running thread model.

• Issues of Java in the Sierra

  I recently installed OS Sierra and get the pop-up message, "to use the"Java"command line tool, you must install a JDK".  I installed the program several times via the link provided and rebooted my computer to restart.  The message continues to be displayed.  How to solve this problem?

  Did you install Apple legacy Java 6 or Oracle? Only the legacy Java 6 will solve the problem before the uninstall of the software that requires Java 6 legacy rather than any other version.

  Download Java for OS X 2015-001

• Unplug the power to the laptop causing issues of java.

  When I unplug the power cord from my Dell D630 I am unable to run some Oracle applications using java.  Parts of the screen (including the sidebar) seems to blink and does not at all what I'm typing.  If I reconnect the power cord stops flashing and the Oracle application session begins to work very well.  My research leads me to believe that the Aero theme is involved. Running Vista SP2 and Oracle Jinitiator 1.3.1.22.  I've upgraded to the new java but no help. If the computer laptop cord is plugged it all works fine.

  Any ideas?

  Hi gdoogle1,

  Oracle Jinitiator 1.3.1.22 seems to be compatible with Windows XP, 2003 & 2000.

  You may need to download Oracle Jinitiator 1.5.0_06 which is compatible with windows vista, see the link below:

  http://www.Oracle.com/technology/products/forms/htdocs/10gR2/clientsod_forms10gR2.html

  You can also check with the provider of the program for a plug-in or an update of the program, see the link below:

  http://www.Oracle.com/technology/software/products/developer/htdocs/jinit.htm

  Thank you, and in what concerns:

  Ajay K

  Microsoft Answers Support Engineer

  Visit our Microsoft answers feedback Forum and let us know what you think.

• Issue in Java Heap Size

  Hi Experts,

  After changing the size of 512 MB Min segment, 6012 MB Max heap size, PermGem space to 512 MB, we face to the below mentioned question,

  means: Java heap space

  at java.util.HashMap.createHashedEntry(HashMap.java:715)

  at java.util.HashMap.putImpl(HashMap.java:698)

  at java.util.HashMap.put(HashMap.java:678)

  at org.apache.myfaces.trinidadinternal.config.dispatch.DispatchResponseConfiguratorImpl.apply(DispatchResponseConfiguratorImpl.java:95)

  at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._getResponse(TrinidadFilterImpl.java:292)

  at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:239)

  at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)

  at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at com.safex.beans.IECompatibleFilter.doFilter(IECompatibleFilter.java:34)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.wcps.client.PersonalizationFilter.doFilter(PersonalizationFilter.java:75)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.webcenter.content.integration.servlets.ContentServletFilter.doFilter(ContentServletFilter.java:168)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.webcenter.lifecycle.filter.LifecycleLockFilter.doFilter(LifecycleLockFilter.java:151)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:180)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  to oracle.security.jps.ee.http.JpsAbsFilter$ 1.run(JpsAbsFilter.java:119)

  at java.security.AccessController.doPrivileged(AccessController.java:310)

  at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:324)

  at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:460)

  at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)

  at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)

  at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:163)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  to weblogic.servlet.internal.WebAppServletContext$ ServletInvocationAction.wrapRun (WebAppServletContext.java:3730)

  to weblogic.servlet.internal.WebAppServletContext$ ServletInvocationAction.run (WebAppServletContext.java:3696)

  at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)

  at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)

  at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2273)

  at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)

  at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490)

  at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)

  at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)

  means: Java heap space

  to oracle.xml.parser.v2.XMLDocument. < init > (XMLDocument.java:418)

  to oracle.xml.parser.v2.NodeFactory$ NFDocument. < init > (NodeFactory.java:295)

  at oracle.xml.parser.v2.NodeFactory.createNFDocument(NodeFactory.java:286)

  at oracle.xml.parser.v2.DocumentBuilder.setNodeFactory(DocumentBuilder.java:1427)

  at oracle.jbo.mom.MOMParserMDS.parse(MOMParserMDS.java:197)

  at oracle.jbo.mom.MOMParserNonMDS.readAndParse(MOMParserNonMDS.java:71)

  at oracle.jbo.mom.MOMParserMDS.readAndParseSessionDef(MOMParserMDS.java:176)

  at oracle.jbo.mom.DefinitionContextStandard.readAndParseSessionDef(DefinitionContextStandard.java:246)

  at oracle.jbo.mom.DefinitionManager.loadDefObject(DefinitionManager.java:1089)

  at oracle.jbo.mom.DefinitionManager.doFindSessionDefObject(DefinitionManager.java:1155)

  at oracle.jbo.mom.DefinitionManager.findSessionDefObject(DefinitionManager.java:916)

  at oracle.adf.model.binding.DCBindingContainerDef.findSessionDefObjectUsingBaseNameOrSessionDefPackage(DCBindingContainerDef.java:441)

  at oracle.adf.model.binding.DCBindingContainerDef.findSessionDefObject(DCBindingContainerDef.java:431)

  at oracle.adf.model.binding.DCBindingContainerDef.findDefObjectUsingSessionDef(DCBindingContainerDef.java:361)

  at oracle.adf.model.binding.DCBindingContainerDef.findDefObject(DCBindingContainerDef.java:350)

  at oracle.adf.model.binding.DCBindingContainerReference.getDef(DCBindingContainerReference.java:112)

  at oracle.adf.model.BindingContext.findBindingContainerDefByPath(BindingContext.java:1750)

  at oracle.adf.model.BindingRequestHandler.isPageViewable(BindingRequestHandler.java:374)

  at oracle.adf.model.BindingRequestHandler.beginRequest(BindingRequestHandler.java:263)

  at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:203)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:128)

  to org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$ FilterListChain.doFilter (TrinidadFilterImpl.java:446)

  at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)

  to org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$ FilterListChain.doFilter (TrinidadFilterImpl.java:446)

  at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:271)

  at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)

  at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at com.safex.beans.IECompatibleFilter.doFilter(IECompatibleFilter.java:34)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.wcps.client.PersonalizationFilter.doFilter(PersonalizationFilter.java:75)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.webcenter.content.integration.servlets.ContentServletFilter.doFilter(ContentServletFilter.java:168)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.webcenter.lifecycle.filter.LifecycleLockFilter.doFilter(LifecycleLockFilter.java:151)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:180)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  to oracle.security.jps.ee.http.JpsAbsFilter$ 1.run(JpsAbsFilter.java:119)

  at java.security.AccessController.doPrivileged(AccessController.java:310)

  at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:324)

  at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:460)

  at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)

  at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)

  at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:163)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)

  at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)

  to weblogic.servlet.internal.WebAppServletContext$ ServletInvocationAction.wrapRun (WebAppServletContext.java:3730)

  to weblogic.servlet.internal.WebAppServletContext$ ServletInvocationAction.run (WebAppServletContext.java:3696)

  at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)

  at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)

  at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2273)

  at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)

  at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490)

  at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)

  at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)

  Before you increase the Max 6 GB heap size, it is 4 GB. After the question is change us to 6 Gb.Even after that the problem happened.

  What can we do?

  How much we need to increase? (Size of RAM 20 GB, virtual memory: 6 GB, 4 processors, 70%, use of memory virtual. 50% RAM usage)

  Can - I need set the Min and Max Size as 6 GB?

  Is there no changes have to make space PermGem?

  We are using IBM j9 VM Jdk version 1.6.0?

  How can we control java class wicj took more heap? (any tool is here)

  Waiting for your answers...

  Kind regards

  Raj.

  A 64-bit process cannot see that 264 bytes of memory. In practice, most operating systems limit each process to one or more less than the space available address, so that the kernel can handle 64-value which can be pointers to the kernel memory, memory of the process or memory device.

  Maximum segment size of 32-bit or 64-bit JVM seems easy to determine glancing the addressable memory such as 2 ^ 32 (4GB) for 32-bit JVM and 2 ^ 64 for 64-bit JVM. Confusion starts here because you can't really put 4 GB as maximum segment size for 32-bit JVM options to the help - Xmx JVM heap. You get could not create the maximum segment size is not a valid virtual machine Java: error - Xmx. There are several reasons different segment space maximum for the FMV is less theoretical limit and vary from one operating system to another for example different in Windows, Linux and Solaris. I saw some comments on my post of 10 points on Java Heap Space about what is segment space maximum for Java or JVM 32 bit or 64 bit JVM and why Windows allows only of up to 1.6 G memory as the maximum segment etc.   See more about this in frequently asked Questions about the Java HotSpot VM

  The formula I posted is a generic.    MaxPermSize may vary depending on the scope of application, number of JSP pages, classes etc contained in the request.  It may not necessarily be 1/3 or 1/4th of Max Heap which is just a starting point tuning after that we need to see how much more PermSize is necessary.  (However in your case, that PermSize adjustment is not necessary at this time because it is OOM's bunch)

• Developer SQL 4 - issue House Java JDK

  Hello

  I just installed SQL Developer 4 (I have the Version 3.2.20.09 race) and when tried to start at the first time, asking its JDK.

  My cell phone has Java (JRE) after that, I tried to give all 3 trails but its not accepting.

  Help, please

  j2re1.4.2_16

  jre6

  jre7

  Concerning

  Nanan

  To add to the comments of Jeff, remember the Java installation wizard gives you the ability to No installation/update of the public JRE.  So when installing the latest JDK required by SQL Developer, just install the public JRE associated.

• Issue of Java certification

  I have the material for two learning modules:
  
  (a) Sun Java 2 Developer MCJS CX-310-252/CX-310-027, and
  (b) Java 2 5.0 Programmer Certification 310-055.
  
  I know that this kind of examinations were organized by Sun Microsystems, Inc., which was acquired by Oracle in 2010. So my questions are:
  
  1. What are the exact names and numbers for the two reviews above, Oracle gave them? On the Oracle's Web site
  (
  http://education.Oracle.com/pls/web_prod-PLQ-dad/db_pages.GetPage?page_id=42 & p_org_id = 28 & lang = US
  )
  I couldn't find available Java exams that start with "1Z0" or "1Z1.
  
  2 are the old (Sun) and new exams (Oracle) exactly the same, that is, is the material I have is sufficient to take the exams again?
  
  Thank you in advance.

  k841 wrote:
  Is this correct?

  Yes, that's correct.

  Also, is it possible, that by moving a review does not get certified? I understand the research, it is also necessary to attend a "class instructor" course, which cost about £1500 - is - true? Thank you.

  It is enough to pass the exam.

• Issue of Java and Flash Builder

  Hey all,.

  Is there anyway to import my Java classes to be used with Flash Builder 4 and if so how can I go to? I'm running using the Eclipse platform. Thanks in adavnce.

  Do you mean that you want to have your Java projects in your standalone Flash Builder workspace? You will need to install the JDT plugins in Flash Builder. I just wrote a post here http://blogs.adobe.com/jasonsj/2010/06/java_development_in_flash_builder_4_standalone.html.

  Jason San Jose

  Software engineer, Flash Builder

• Can someone solve this issue on Java programming for me.

  /**
  * Challenge
  * Alice throws a party with invited other N.  One of the guests starts a rumor
  on the Alice to say things to one of the other guests.  A person hearing this rumor
  for the the first time, he tells another guest chosen at random among all people
  * in the evening except 2 people: the person hearing go and Alice.  No one in the case
  * hears the rumor again, he or she does not spread the rumour any more away.
  *
  Write a program that returns the LIKELIHOOD (of a double value) that everyone in the
  * Party hears the rumor.  You can use an array of size N and simulate this problem
  * 500 times to generate an approximate probability.
  */
  public static double rumor (int N) {}
  }

  Muhammad

  This is beyond the scope of this site, I would try the relevant section on Technet or MSDN

  http://social.technet.Microsoft.com/forums/en-us/user/forums

• Multi threading issue.

  Hello
  I have worked on a project and would be grateful if I have a solution for this. The issue I'm facing is when two admin update the details of a "user" at the same time there are lines that are unique in the table. Here I use the framework KODO to remove and insert new values into the table when the administrator clicks the button Save. (here being complex update, delete, and insert is used).
  
  so when two admin clicks of the button simultaneously duplicate lines occur in the table.
  
  How can I solve this problem, I think using Sync is a bad option as he eats performance.
  Is there a way to correct this multi threading issue in java without locking or wielding resources (such as application performance does not diminish), since this part of my commonly used web application?

  The normal way to avoid this problem is to have a unique index on the table that prevents duplicate entries.

  I wouldn't delete the entry, only insert the entry if it does not exist and update it if it isn't.

  If you block on a unique key for the user/line (rather than the entire table) your overhead costs will be about 2 microseconds. It is very small for an interaction with the user-driven application. You could lock the whole table which may limit your request to about 100 updates per second, but would be much simpler to manage. Personally, if administrators perform more than 100 updates per second there is something wrong with your model.

  In short I just lock the entire table and optimize if it proves to be a problem.