Error while Shell executing from Oracle Using java proc

Question

Hi All,
After a long time I'm here again.
I'm facing one strange problem.
SQL>
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for Linux: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
Elapsed: 00:00:00.01
SQL>
SQL>And, the purpose of this procedure is to execute shell command from PL/SQL application.
It seems that this procedure is able to execute shell commands like *'pwd'*.
But, when it comes to other commands like *'ls -lrt'* or *'sqlldr'* it throws error.
Kindly find the following details -
SQL> declare
  2    err_cd   number;
  3    err_desc varchar2(500);
  4  begin
  5   dbms_java.set_output(1000000);
  6   host(p_command => '/a/mis/Sqlloader_script/loader_command/ST_det.sh');
  7   dbms_output.put_line('Successfully Executed SQL Loader Command');
  8  exception
  9      when others then
10        err_cd := 1;
11        err_desc := substr(sqlerrm,1,500);
12        dbms_output.put_line(err_desc);
13  end;
14  /
Process err :/a/mis/Sqlloader_script/loader_command/ST_det.sh: line 19: sqlldr: No such file or directory
Successfully Executed SQL Loader Command
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.11
SQL>
SQL> declare
  2    err_cd   number;
  3    err_desc varchar2(500);
  4  begin
  5   dbms_java.set_output(1000000);
  6   host(p_command => 'pwd');
  7   dbms_output.put_line('Successfully Executed SQL Loader Command');
  8  exception
  9      when others then
10        err_cd := 1;
11        err_desc := substr(sqlerrm,1,500);
12        dbms_output.put_line(err_desc);
13  end;
14  /
Process out :/home/oracle/app/oracle/product/11.2.0/dbhome_1/dbs
Successfully Executed SQL Loader Command
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.11
SQL>But, the file exists in the following path -
SQL> !ls -lrt /a/mis/Sqlloader_script/loader_command/ST_det.sh
-rwxrwxr-x 1 oracle root 1315 Apr 13 13:40 /a/mis/Sqlloader_script/loader_command/ST_det.shAny idea?
Where is the privileges that i need to give to the current user?
When i directly execute the Sql Loader from the oracle o/s - it ran successfully.
[oracle@pult loader_command]$ /a/mis/Sqlloader_script/loader_command/ST_det.sh
SQL*Loader: Release 11.2.0.1.0 - Production on Fri Apr 13 14:59:19 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.
Commit point reached - logical record count 64
Commit point reached - logical record count 128
Commit point reached - logical record count 192
Commit point reached - logical record count 256
Commit point reached - logical record count 320
Commit point reached - logical record count 384
Commit point reached - logical record count 448
Commit point reached - logical record count 512
Commit point reached - logical record count 576
Commit point reached - logical record count 640
Commit point reached - logical record count 704
Commit point reached - logical record count 732
Succesful execution of Loading.
[oracle@pult loader_command]$
[oracle@pult loader_command]$Thanks in advance.

Answer 1

This is a generic java proc.
It works well with windows.
But, facing this problem in Linux.
Procedure looks like -
create or replace and compile java source named host as
import java.io.*;
public class Host {
  public static void executeCommand(String command) {
    try {
      String[] finalCommand;
      if (isWindows()) {
        finalCommand = new String[4];
        finalCommand[0] = "C:\\windows\\system32\\cmd.exe";  // Windows XP/2003
        finalCommand[1] = "/y";
        finalCommand[2] = "/c";
        finalCommand[3] = command;
      else {
        finalCommand = new String[3];
        finalCommand[0] = "/bin/bash";
        finalCommand[1] = "-c";
        finalCommand[2] = command;
      final Process pr = Runtime.getRuntime().exec(finalCommand);
      pr.waitFor();
      new Thread(new Runnable(){
        public void run() {
          BufferedReader br_in = null;
          try {
            br_in = new BufferedReader(new InputStreamReader(pr.getInputStream()));
            String buff = null;
            while ((buff = br_in.readLine()) != null) {
              System.out.println("Process out :" + buff);
              try {Thread.sleep(100); } catch(Exception e) {}
            br_in.close();
          catch (IOException ioe) {
            System.out.println("Failed to print.");
            ioe.printStackTrace();
          finally {
            try {
              br_in.close();
            } catch (Exception ex) {}
      }).start();
      new Thread(new Runnable(){
        public void run() {
          BufferedReader br_err = null;
          try {
            br_err = new BufferedReader(new InputStreamReader(pr.getErrorStream()));
            String buff = null;
            while ((buff = br_err.readLine()) != null) {
              System.out.println("Process err :" + buff);
              try {Thread.sleep(100); } catch(Exception e) {}
            br_err.close();
          catch (IOException ioe) {
            System.out.println("Process error.");
            ioe.printStackTrace();
          finally {
            try {
              br_err.close();
            } catch (Exception ex) {}
      }).start();
    catch (Exception ex) {
      System.out.println(ex.getLocalizedMessage());
  public static boolean isWindows() {
    if (System.getProperty("os.name").toLowerCase().indexOf("windows") != -1)
      return true;
    else
      return false;
};Looking for your reply.