MySQL Boken Pipe Exception...Plz Help Me Urgently

Question

Hello Friends....
When I shifted my Java application which has MySQL(Linux has MySQL - 4.1.21-standard version. ) as a backend on Linux Platform I encountered following exception...
com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception:
** BEGIN NESTED EXCEPTION **
java.net.SocketException
MESSAGE: Broken pipe
STACKTRACE:
java.net.SocketException: Broken pipe
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2692)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2621)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1552)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1666)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2994)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:936)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1030)
at ServerThread.run(ServerThread.java:98)
** END NESTED EXCEPTION **
its working fine when I tested it on Windows patform with MySql 5.0 as backend.
Plz Help me. I get struck on thi sproblem from last 2 days.
//PremInd
Message was edited by:
Prem_India
Message was edited by:
Prem_India

Answer 1

Thanks for your response....
I'm developing chat application. In my server side code I called a thered which listen for all request for that user. The exception is occured in thread. Here is sanpshot of code...
public class ServerThread extends Thread
// Variable Declaration
public ServerThread( Server server, Socket socket, String acntName, String opratorID )
    this.server = server;
    this.socket = socket;
    this.accName1 = acntName;
    this.oprID1 = opratorID;
    try
          Class.forName("com.mysql.jdbc.Driver").newInstance();                
        con = DriverManager.getConnection("jdbc:mysql://localhost/livechatdb","root","");
    catch(Exception ee)
         System.out.println("Break in ServerThread Cons "+ee);
    start();
  public void run()
    String savacc="";
    try
      DataInputStream din = new DataInputStream( socket.getInputStream() );
      DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
      String message;              
      while (true)
        System.out.println("Thread Runnnnnning..");
        message = din.readUTF();           
        System.out.println("~~~~ "+message);
       if(message.startsWith("^%%^"))
               StringTokenizer stok = new StringTokenizer(message,"~");
               String rmv1 = stok.nextToken();
               String cID1 = stok.nextToken();
               String accNm1 = stok.nextToken();
               String oprID1 = stok.nextToken();
               String deptNm1= stok.nextToken();              
               String IPAddress1 = stok.nextToken();
               String oprName1 = stok.nextToken();
               PreparedStatement pStmt1;
                 rs.close();
               try
                       System.out.println(" Line 9999 99999 ");         
                       pStmt1 = con.prepareStatement("Select status from Customer where custID = ? and accName= ? ");
                        pStmt1.setString(1,cID1);
                        pStmt1.setString(2,accNm1);                      
                       rs = pStmt1.executeQuery();       
                      System.out.println(" Line 100 1000 1000000  ");
                       while(rs.next())
                              String stat = rs.getString("status");
                              if(stat.equals("Chat Request"))
                                    /* set status to chatting in Cutomer table */
                                    String strStatus = "Chatting : "+oprName1;                                    
                                    pStmt = con.prepareStatement("Update Customer set status = ? where custID = ? and accName= ? ");
                                    System.out.println (" Line 107              107           107");
                                    pStmt.setString(1,strStatus);                                   
                                    pStmt.setString(2,cID1);
                               pStmt.setString(3,accNm1);                                                                                    
                             int i = pStmt.executeUpdate();
                             System.out.println (" Line 112              112           112 "+i);
                             dos.writeUTF("^%%^"+"~"+"Y"+"~"+IPAddress1);
                             server.sendUpdateChatOperTbl(deptNm1,accNm1,cID1,"*",strStatus);                                                            
                              else
                                    dos.writeUTF("^%%^"+"~"+"N"+"~"+IPAddress1);
             catch (Exception ex)
                    System.out.println (" Line 131  131   131  "+ex);
       else if(message.startsWith("!O!"))  //chat opr connect
                        // other stuff
After this line exception occured System.out.println(" Line 9999 99999 "); & it catch at this line System.out.println (" Line 131 131 131 "+ex);
Thanks.
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