JAVA IO Exception Create Process

[henrymania]

Am writing a code for database backup....by backupservlet is as given below

i get the following exception

[#|2007-10-31T16:05:25.741+0530|INFO|sun-appserver-pe8.2|employeetransaction.DBBackupServlet|_ThreadI D=22;| About to execute the command exp hrms/manager file=C:\ET\ET\EmployeeTransaction\build\web\backup Dir\Weekly.dmp log=C:\ET\ET\EmployeeTransaction\build\web\logDir\ Weekly.log|#]
[#|2007-10-31T16:05:25.803+0530|WARNING|sun-appserver-pe8.2|javax.enterprise.system.stream.err|_ThreadID =22;|
java.io.IOException: CreateProcess: exp hrms/manager file=C:\ET\ET\EmployeeTransaction\build\web\backup Dir\Weekly.dmp log=C:\ET\ET\EmployeeTransaction\build\web\logDir\ Weekly.log error=2
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(ProcessImpl.java:81)
at java.lang.ProcessImpl.start(ProcessImpl.java:30)
at java.lang.ProcessBuilder.start(ProcessBuilder.java :451)
at java.lang.Runtime.exec(Runtime.java:591)
at java.lang.Runtime.exec(Runtime.java:429)
at java.lang.Runtime.exec(Runtime.java:326)
at employeetransaction.DBBackupServlet.processRequest (DBBackupServlet.java:183)
at employeetransaction.DBBackupServlet.doGet(DBBackup Servlet.java:307)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:747)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:860)
at sun.reflect.GeneratedMethodAccessor2305.invoke(Unk nown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(Se curityUtil.java:249)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject .java:517)
at org.apache.catalina.security.SecurityUtil.execute( SecurityUtil.java:282)
at org.apache.catalina.security.SecurityUtil.doAsPriv ilege(SecurityUtil.java:165)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:257)
at org.apache.catalina.core.ApplicationFilterChain.ac cess$000(ApplicationFilterChain.java:55)
at org.apache.catalina.core.ApplicationFilterChain$1. run(ApplicationFilterChain.java:161)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:263)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:551)
at org.apache.catalina.core.StandardContextValve.invo keInternal(StandardContextValve.java:225)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:173)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:551)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:170)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:551)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:132)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:551)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:933)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(Co yoteAdapter.java:189)
at com.sun.enterprise.web.connector.grizzly.Processor Task.doProcess(ProcessorTask.java:604)
at com.sun.enterprise.web.connector.grizzly.Processor Task.process(ProcessorTask.java:475)
at com.sun.enterprise.web.connector.grizzly.ReadTask. executeProcessorTask(ReadTask.java:371)
at com.sun.enterprise.web.connector.grizzly.ReadTask. doTask(ReadTask.java:264)
at com.sun.enterprise.web.connector.grizzly.TaskBase. run(TaskBase.java:281)
at com.sun.enterprise.web.connector.grizzly.WorkerThr ead.run(WorkerThread.java:83)
|#]
[#|2007-10-31T16:05:25.803+0530|SEVERE|sun-appserver-pe8.2|employeetransaction.DBBackupServlet|_ThreadI D=22;|state is null : false ::: state.isBusy() : false Exception in closing database connections.|#]

 
 Runtime s=Runtime.getRuntime();
 
    //Process o=null;
        String command = "exp "+usr+"/"+pwd+" file="+backupRealPath+backupFileName+" log="+logRealPath+logFileName;
 
        java.util.logging.Logger.getLogger(getClass().getName()).log(java.util.logging.Level.INFO," About to execute the command " + command);
        try
        {
           Process o=s.exec(command);
             java.util.logging.Logger.getLogger(getClass().getName()).log(java.util.logging.Level.INFO,o.toString()+ " Process has started " );
            // any error message?
            StreamGobbler errorGobbler = new StreamGobbler(o.getErrorStream(), "ERROR");            
            // any output?
            StreamGobbler outputGobbler = new StreamGobbler(o.getInputStream(), "OUTPUT" );
 
            // kick them off
            errorGobbler.start();
            outputGobbler.start();
 
            // any error???
            int exitVal = o.waitFor();
            java.util.logging.Logger.getLogger(getClass().getName()).log(java.util.logging.Level.INFO," Exit Value = " + exitVal);
            errBuff = errorGobbler.getOutPut();
            outBuff = outputGobbler.getOutPut();
            servletOutputStream.println("The command "+command+" has been submitted.<br>");
            servletOutputStream.println(errBuff.toString());
            servletOutputStream.println(outBuff.toString());
            if (exitVal == 0)
                servletOutputStream.println("The backup completed successfully.<br>");
            else
                servletOutputStream.println("The backup terminated with error code "+exitVal+".<br>");
        //   fos.flush();
       //    fos.close();
 
        } catch (Throwable t)
          {
            t.printStackTrace();
          }                        
 
          servletOutputStream.flush();
          servletOutputStream.close();
 
 

My streamgobbler is

 
/*
 * StreamGobbler.java
 *
 * Created on October 9, 2007, 9:53 PM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */
 
package employeetransaction;
 
/**
 *
 * @author kvishwas
 */
import java.util.*;
import java.io.*;
import javax.servlet.ServletOutputStream;
import org.apache.naming.java.javaURLContextFactory;
 
/**
 *
 * @author kvishwas
 */
public class StreamGobbler extends Thread {
 
    /** Creates a new instance of StreamGobbler */
    InputStream is;
    String type;
    StringBuffer out;
    OutputStream os;
 
    public StreamGobbler(InputStream is, String type)
    {
        this.is = is;
        this.type = type;
        this.out = new StringBuffer();
 
 
        }
 
 
    /* 
    public StreamGobbler(InputStream is, String type,OutputStream redirect)
    {
        this.is = is;
        this.type = type;
        this.os = redirect;
    }
    */
 
    public void run()
    {
        try
        {
            PrintWriter pw =null;
            if(os!=null)
                pw=new PrintWriter(os);
 
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader br = new BufferedReader(isr);
            String line=null;
            while ( (line = br.readLine()) != null)
            {    
               /* if(pw != null)
                    pw.println(line);*/
                System.out.println(type + ">" + line);
               String line1 = line + "<br>";
                out.append(line1);
            }    
              /*  if(pw != null)
                    pw.flush();*/
         } catch (IOException ioe)
         {
            ioe.printStackTrace();  
         }
    }
 
    public StringBuffer getOutPut()
    {
        return out;
    }
 
 
}
 
 

[r035198x]

What happens when you run the command

exp hrms/manager file=C:\ET\ET\EmployeeTransaction\build\web\backupDir\Weekly.dmp log=C:\ET\ET\EmployeeTransaction\build\web\logDir\Weekly.log
 

manually on the console?