Run multiple unix commands from ODI procedure

I want to run a series of unix commands from ODI procedure. I dont want to use Unix shell scripts. (I know that works).I am just trying to place the contents of the shell scripts in ODI procedure with Operating system as technology. But I am unable to execute the proecedure.
For example below is a very small 3 line commands I would execute
filename="/var/test.txt"
ls -l $filename > /var/anotherfile.txt
chmod 777 $filename
I am not sure if there is any specific syntax that I have to follow for executing unix commands. Also I dont want to write a Jython and use os.system command as well.
Appreciate any help on this

First your original question... You can put more than one DOS command on a single line, simply separate each command with an ampersand (&). For example:
mkdir c:\abc & cd abc & dir*
Regarding your concerns about performance, well that would depend on exactly what you mean. Using CLIENT_HOST (or HOST on the server) simply opens a shell (DOS in this case) then passes your command to it. The performance of performing this action really isn't measurable. Basically you are just pressing a button and you should get a near immediate action. As for the performance of executing each command, that has nothing to do with Forms. Once the command is passed to the shell, the rest is a function of the shell and whatever command you passed.
Having said that, if you were to write something sloppy like a loop (in pl/sql) which called CLIENT_HOST lots of times repeatedly, then yes there would be a performance problem because the pushing of the button will cause an exchange to and from the server and each cycle in the loop will do the same.
So the answer to how performance is impacted will depend on what exactly you need to accomplish. If it is a single call to CLIENT_HOST, this should be fine.

Similar Messages

How to execute unix command from ODI Procedure

Hi,
I am trying to execute below unix command from ODI Procedure (Command on Target tab) but I am getting the error "java.io.IOException: Cannot run program "cd": error=2, No such file or directory" but when I try to execute the same command using OdiOSCommand, it is executing successfully. I don't want to use shell script to execute this command. Is there any specific syntax am I missing to execute this command from ODI procedure?
cd /project3/tmt/;ls *.dmp > dmplist.lst
Please help me on this...
Thanks
MT

Hi nahlikh,
Thank you for the reply.
I used below command in Procedure but still getting the same error as "java.io.IOException: Cannot run program "OdiOSCommand": error=2, No such file or directory".
OdiOSCommand "-COMMAND=cd /project3/tmt/;ls *.dmp > dmplist.lst"
as I mentioned earlier if I use the command cd /project3/tmt/;ls *.dmp > dmplist.lst in OdiOSCommand tool it is executing successfully without any issues.
any thoughts appreciated to get a solution for this issue.
Thanks
MT

How to run multiple DOS commands from a single Webutil Client_Host session?

Hello all,
I have a requirement where I need to create an interface with SVN from Forms for basic checkin-checkout of files.
So, I've been trying to use webutil client_host to open a command line session and issue svn commands.
For svn, sometimes I need to give multiple commands like change to a particular directory and then run an svn command.
But client_host takes in only one command at a time and I'm unable to issue a series of DOS commands to perform
a particular task.
Is there a way to do this?
Pls suggest.
Regards,
Sam

First your original question... You can put more than one DOS command on a single line, simply separate each command with an ampersand (&). For example:
mkdir c:\abc & cd abc & dir*
Regarding your concerns about performance, well that would depend on exactly what you mean. Using CLIENT_HOST (or HOST on the server) simply opens a shell (DOS in this case) then passes your command to it. The performance of performing this action really isn't measurable. Basically you are just pressing a button and you should get a near immediate action. As for the performance of executing each command, that has nothing to do with Forms. Once the command is passed to the shell, the rest is a function of the shell and whatever command you passed.
Having said that, if you were to write something sloppy like a loop (in pl/sql) which called CLIENT_HOST lots of times repeatedly, then yes there would be a performance problem because the pushing of the button will cause an exchange to and from the server and each cycle in the loop will do the same.
So the answer to how performance is impacted will depend on what exactly you need to accomplish. If it is a single call to CLIENT_HOST, this should be fine.

Running multiple unix commands form java

hi i have a probelm when i am trying to run more than one command from java:
i want to run it by using bin/ksh -c (this will take the first arg so i have probelm with runnig commad like" less abc.txt)
commands to be run:
1- ll -tr
2-mkdir x
3-less abc.txt
Runtime rt = Runtime.getRuntime();
Process pr = rt.exec("/bin/ksh -c ll;pwd;less abc.txt");
which commands i am allowing to run form the java and how can i make it
best regrdas
Thanks in advance.

eddie100 wrote:
hi i have a probelm when i am trying to run more than one command from java:
i want to run it by using bin/ksh -c (this will take the first arg so i have probelm with runnig commad like" less abc.txt)
commands to be run:
1- ll -tr
2-mkdir x
3-less abc.txt
Runtime rt = Runtime.getRuntime();
Process pr = rt.exec("/bin/ksh -c ll;pwd;less abc.txt");
which commands i am allowing to run form the java and how can i make it
best regrdas
Thanks in advance.put your commands in a shell script and then call the script from java ...
import java.io.*;
class Runner {
        public static void main(String[] argv) throws Throwable {
                Process p = Runtime.getRuntime().exec("/export/home/caleb/c_code/t.sh");
                BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                String line;
                while( (line=br.readLine()) != null ) System.out.println(line);
}

Call unix commands from stored procedures

My stored procedure requires to call unix commands HOW DO I DO IT?
null

i do not know pl sql but in java you can use:
Runtime.getRuntime().exec("YOUR UNIX COMMAND");
real example:
Runtime.getRuntime().exec("ls");
but you must be careful with using that...
especially if you want to wait till the process finishes..
rgds,

Running multiple java commands from a script

Hi, I am running Cygwin on windows XP professional.
I keep recompiling some files with javac as I change them very often. To save some time, I made a script "tout.txt" including the three following commands :
javac JpanColl.java
javac AppliTest.java
java AppliTest
There is no problem with the java command that launches a JFrame but it launches the old version since the two java commands don't compute.
This is the message I get :
javac Invalid flag: Jpancoll.java
etc.
Thanks

You guys didnt play enough Highlights for Kids covers
as a kid, lol.
javac JpanColl.java
javac Invalid flag: Jpancoll.java
all things java are cAsE sEnSiTiVe.Yes thanks for the input. I did note the incorrect name, however, Windows doesn't actually care, it matters at runtime but not compile time. Also invalid flag is not the type of error message one would see with that sort of error anyway.
Bottom line: nice guess but you're wrong.

Having trouble in running a unix command and getting the output

Hi,
I am trying to run a unix command from within the java code. I am not able to make it work. I am enclosing the code and the error message that I am getting. Any help is highly appreciated.
import java.io.*;
public class RunCommand {
    public static void main(String args[]) {
        String s = null;
        try {
            Process p = Runtime.getRuntime().exec("cat UNIX_ASCII_TEXT_FILE | A_UNIX_PROGRAM -d");
            BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
            BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
            // read the output from the command
            System.out.println("Here is the standard output of the command:\n");
            while ((s = stdInput.readLine()) != null) {
                System.out.println(s);
            // read any errors from the attempted command
            System.out.println("Here is the standard error of the command (if any):\n");
            while ((s = stdError.readLine()) != null) {
                System.out.println(s);
            System.exit(0);
        catch (IOException e) {
            System.out.println("exception happened - here's what I know: ");
            e.printStackTrace();
            System.exit(-1);
}The error message that I am getting is
Here is the standard output of the command:
SLu|%%$$=
Here is the standard error of the command (if any):
cat: cannot open |
cat: cannot open A_UNIX_PROGRAM
cat: cannot open -dLooks like the cat command is working and not the pipe command and the command after the pipe. But when I run the UNIX command from the command prompt I get the expected result.

You might read this article and see if its approach works.
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html

Execute Unix Mail Command from Store Procedure

Hi Colleagues!
I designed a store procedure that Monitoring some Critical tables in my Oracle 8.0.6.1.0 Database But I need to send some Emails from the Store Procedures to Information System Staff when the amount of rows increase too much. I read about UTL_SMTP but my database version is too old to run this package. Also I have the option of Maildemo8i that execute MS Oulook from a Client System But I looking to Send it from my Database(OS HPUX). So please take a look of this issue and I will appreciate any help.
Your Friend.
Emmanuel Carrillo Trejos.
LNB, Republic of Panama(Central America).
P.D. You can email to: [email protected]

Do you mean that you want to execute mail or mailx unix commands to send mails.If i am right then probably you are looking for a way to execute operating system commands from your procedure.
You can refer this link if you want to do that. You need java support in your Oracle database and i believe that Oracle 8 does have jvm running in the instance.
http://asktom.oracle.com/pls/ask/f?p=4950:8:5079825575573830264::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:952229840241
Thank you!

Running Unix Command from WEB-APPLICATION

Hi all,
I want to run unix command from a java-based web application. the basic code part is this ---
public class RunCommand
      public String runIt()
          String s = null, returnString = "";
          Process p=null;
          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")

Run Unix command from windows

I would like to run a unix command and capture the output by running a java program on a windows 98 machine, this will be ran on a secure intranet. What is the best way to do that. If anyone knows of an example source code that would be great.
thanks,
Dean

Try this. It always works for me.
import java.io.*;
public class Exec {
    private BufferedReader out;
    private Process p;
    public Exec(String cmd) throws IOException {
        p = Runtime.getRuntime().exec(cmd);
        out = new BufferedReader(new InputStreamReader(p.getInputStream()));
    public BufferedReader getBufferedReader() {
        return out;
    public void waitFor() throws InterruptedException {
        p.waitFor();
    public static void main(String [] args) throws IOException,
            InterruptedException {
        final Exec p = new Exec("your command goes here.");
        new Thread(new Runnable() {
            public void run() {
                try {
                    String s = null;
                    while((s = p.getBufferedReader().readLine()) != null) {
                        System.out.println(s);
                catch(IOException io){}
        }).start();
        p.waitFor();
}

How to run a HOST command from Report 2.5

Hello everybody,
I want to pass an unix command from a Report. I am running the report (Report 2.5) on an Unix server and I want to pass a unix host command inside the Before Report Trigger of the report. But Report2.5 is not recognising the HOST built-in. Is there is any way around?
Thank in advance.
Samujjwal Basu

First off is that openssl command correct? Should it be this instead:
openssl pkcs8 -inform der -nocrypt -in test.der -out result.pem
Try out your openssl command within a command prompt so that you know that it works ok. I think the command line you specified waits on stdin (well it does for me).
After that.....
runtime.exec creates a Process object. If you do this:
Process openssl = runtime.exec("....")
then you can examine the return code from openssl to see the exit code - for instance if the input file does not exist then exit = 1. You can test for this with Java
Alternatively you could get the stderr from the process and look inside it - if it is 0 length then all is good, if it has some text in there then it has likely failed. You could then throw an exception and include the stderr output in the exception messgae. You may need to experiment with this, runnig it first when openssl is happy then running it again when openssl is upset.
M

How to run a unix command in java

Hi all,
I need to run a unix command in my standalone java application.my java program is in windows.Is it possible to run unix command on windows system.help me out.
I tried this
Process p = Runtime.getRuntime().exec("ps -ef");
            BufferedReader stdInput = new BufferedReader(new
                 InputStreamReader(p.getInputStream()));
            BufferedReader stdError = new BufferedReader(new
                 InputStreamReader(p.getErrorStream()));i get IO Exception -Create Process ps-ef error=2

If you want to run a command from java for a windows platform, you should check windows knows the command.
So, load up a DOS prompt and type ps -ef and see what happens.

Executing OS command from sql procedure

i want to execute an OS command from the procedure, can i do this way? looks like it is not executing the command move....
declare
begin
dbms_output.put_line(' moving...');
host;
move c:\file1\test.txt C:\moved
exit;
/

True. But that job is going to run in a separate session, some time after the current transaction commits (depending on the number of jobs queued up to run). So if you need to pass information back from the job, or you want the procedure to handle exceptions thrown by the job, or you want to tie job related failures back to a particular application level event, or you want the rest of your procedure to wait for the operating system command to finish, using the DBMS_SCHEDULER for this sort of thing is going to require a fair amount of additional coordination/ monitoring/ infrastructure code. It's certainly not a Herculean task to write that additional code, and it's reasonable in some situations, but the Java stored procedure approach strikes me as substantially easier to deal with in most cases.
Justin

Call an interactive UNIX command from java

Hi,
I want to call a UNIX command from java. When issue the command 'htpasswd -c filename username' on UNIX terminal, it asks for the new password and the then confirmation password again (yeah, unfortunately the htpasswd installed on our system does not allow you proivde the password on the command line. So have to work interactively ). Now, I have written a simple java program RunCommand.java. I am hardcoding the password for the htpasswd command in the file (in the real situation, password will be generated dynamically). I want to issue 'java RunCommand' on the UNIX command line and get back the command prompt without being asked for the password twice. The code is below, but the Outputstream does not work as expected. It always asks for inputs. Any idea? Many thanks.
import java.io.*;
public class RunCommand {
public static void main(String args[]) throws Exception {
String s = null;
try {
String cmd = "htpasswd -c filename username ";
// run a Unix command
Process p = Runtime.getRuntime().exec(cmd);
BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
OutputStream stdOut = p.getOutputStream();
String pswd = "mypassword";
while ((s = stdInput.readLine()) != null) {
     s = stdInput.readLine();
     stdOut.write(pswd.getBytes());
     stdOut.flush();
System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null) {
System.out.println(s);
stdOut.close();
stdInput.close();
stdError.close();
System.exit(0);
catch (IOException e) {
System.out.println("exceptions caught: ");
e.printStackTrace();
System.exit(-1);

There are only about 9 billion responses a day on how to do this. Use the search feature.

Permission denied when I execute a unix command from within my java applet.

Hi Gang,
Forgive me if this is not the appropriate forum for this problem. I'm posting this problem on this forum since I got no answers on the other forum I posted on.
I've written a simple java applet that runs a unix command and then displays some information. The applet compiles fine, and runs perfectly from the command line on my unix system.
However, when I point a browser at the applet from my desktop PC I get the following error as taken from the java console:
Exception in thread "AWT-EventQueue-2" java.security.AccessControlException: access denied (java.io.FilePermission <<ALL FILES>> execute)
This is of course the first line in a long line of error messages. It appears that I am not able to execute a command on the unix system through my applet. I know the problem is with trying to execute a unix command since commenting it causes no error in the web browser. This is the command I'm using in java to execute the unix command:
p = Runtime.getRuntime().exec("ps");
Here's the html file on the unix system:
<html>
<head></head>
<body>
<appletcode=G.class height="250" width="400">
Your browser does not support the applet tag.
</applet>
</body>
</html>
I won't list the java code since it is compiling and working on the command line. But, if you want to see it I'll provide it.
I've done quite a bit of research on this and it seems that a great number of people have similar problems reading or executing files through java. I have yet to find a solution to this problem.
Here are some details about my setup:
Server:
HP9000 running HP/UX 11.23
Apache Web Server 2.0.35
Java 1.5
Desktop PC:
Win2K Pro
Internet Explorer 6
Java 1.6
If you have a solution I would be very grateful! This problem is keeping me from writing my application!
thanks!
kev

Multi-posted.
Already answered here http://forum.java.sun.com/thread.jspa?threadID=5225314&messageID=9916327#9916327

Run multiple unix commands from ODI procedure

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