Running sqlldr command from PL/SQL Block

DECLARE
BEGIN
END;

In SQL * plus we can run DOS commands using the following command
HOST DIR
HOST DIR/P
But When we can't run the HOST command in PL/SQL Block..
I have to Run sqlldr command from PL/SQL Block..
i tried as follows
DECLARE
BEGIN
EXECUTE IMMEDIATE ' host sqlldr control= bad= ';
END;
By
BalaNagaRaju

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    UTL_FILE.fclose(v_filelog);
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    END IF;
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    Hi,
    You might have better luck in the PL/SQL or Java forums. They are located here:
    PL/SQL: PL/SQL
    Java: http://forums.oracle.com/forums/forum.jsp?forum=99
    Good luck,
    Mark

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              try
                       Runtime rt = Runtime.getRuntime();
                  p = rt.exec("sh testPOC.ksh");
                  p.waitFor();
                  BufferedReader stdInput = new BufferedReader(new
                       InputStreamReader(p.getInputStream()));
                  BufferedReader stdError = new BufferedReader(new
                       InputStreamReader(p.getErrorStream()));
                  // read the output from the command
                  returnString += "Here is the standard output of the command:<br>";
                  while ((s = stdInput.readLine()) != null) {
                      returnString += s;
                  // read any errors from the attempted command
                  returnString += "Here is the standard error of the command (if any): <br>";
                  while ((s = stdError.readLine()) != null) {
                      returnString += s;
              catch (IOException e)
                  returnString += "exception happened - here's what I know: ";
                  returnString += "error-> " + e.getMessage();
              catch(Exception e)
                returnString += "exception happened - here's what I know: ";
                  returnString += "error-> " + e.getMessage();
              return returnString;
      }this class is kept as an inner class. The control comes to its outer class, from servlet, from which the runit() is called. but the exception is occuring at line of p=rt.exec(.....). it tells "<command name> : not found transaction completed" [got this using getMessage() method].
    i am unable to show(and see, too) the stacktrace, because i don't have access to that test environment and its log. i can't run this in local because its windows one.
    now can anyone tell me, where is the problem. is there any limitation in web application server/container? this was successful when i used command prompt writing a .java file. Please help me. Thanks in advance...

    Friends, i've got, where the problem is.
    when we run a class file directly from a command prompt, we get an environment with that shell window. but for a servlet application running these kind of commands from a class creates kind of child processes. each and every command is executed as a child process of jvm and don't get those environment. we have 'PATH' variable in the environment. when a command (say, 'dir' or 'sh' or 'ls', etc.) is executed, the shell first search for that executable file (i.e. dir / sh / ls) in the given paths in the variable 'PATH'. this is not available for the child commands of jvm. hence the basic commands are searched in the current directory of the jvm and they are failed.
    i solved the problem giving full path of the commands. like :
    p = rt.exec("/bin/sh runningScript.ksh")

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