Executing OS command from within PL/SQL...

Hi
I would like to know if you can issue operating system command
from within a PL/SQL block on Oracle Database(not developer
2k) .Is there any built in package for the same ? Like a similar
command is available in forms i.e HOST .
Can anyone help please ?
Thank You
Cheers
Raghavendra
null

The only documentation I have seen uses dbms_pipe which
communicates with a host 3gl program, usually C, which in turn
issues a call to the c function system(). You could also mimic
these same actions without using dbms_pipe by using a extproc
program linked to the database if you are running db version 8.0
or above. See the pl/sql procedure manual for dbms_pipe examples.
Raghavendra (guest) wrote:
: Hi
: I would like to know if you can issue operating system command
: from within a PL/SQL block on Oracle Database(not developer
: 2k) .Is there any built in package for the same ? Like a
similar
: command is available in forms i.e HOST .
: Can anyone help please ?
: Thank You
: Cheers
: Raghavendra
null

Similar Messages

System command from within PL/SQL on server ?

Hi
I know its a bit weird thought of executing an NT system command from within PL/SQL on server (UNIX).
Has anyone done something (silly me!) like it or knows any work-around to try something like it?
Thanks in advance.
Regards
Pravesh

Can you be more specific?
Generally to run system commands you utilize DBMS_PIPE to communicate with a listener on the platform that you're accessing. That listener picks up the pipe request and might either:
1. spawn a process to run the command
2. fork a process to run the command
3. run the command within its own application.
It sounds complex, but if review the DBMS_PIPE documentation and it's not too difficult -- presuming you know a language like C.
I believe there are other features in 8.1.5 and higher versions that enable you to run stored programs or COM objects...
Bill

Execute shell command from within pascal code

Hello there,
I am trying to execute a shell command from within my pascal code. I use XCode together with FreePascal. I have tried something like:
exec ('program', 'options');
adding the 'Dos' unit to the Uses clause of my program.
Thus, e.g.,
exec ('mkdir', '/A')
to create a directory with the name 'A'.
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Thank you in advance,
Shane

In the mean time, I found the problem myself. I am just posting the solution here for anyone that is interested. My original solution was correct, in that the 'Dos' Unit must be added, and that the right command is 'exec'. There was however a problem with the correct path to the program that I wanted to invoke. In the shell, this program was accessible from anywhere. However, in the 'exec' command, the full path to the program must be given. Since I am not a Unix expert, I don't know the reason for this.
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begin
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Mac OS X (10.3.9)
Mac OS X (10.3.9)
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How does one execute unix commands from within an applet?

Greetings Folks,
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
Please don't multipost again!

Invoke and Execute Unix command from Oracle PL/SQL

Dear All,
I am currently working in the development of multi user application in ORACLE.
My problem is,
I have to remove a temporary file created in unix server when a particular condition is satisfied in a PL/SQL proccedure.
I searched for this and got solution to use DBMS_PIPE package.
Can you help me how to pack the content 'rm file_name' from different users working in different sessions and how to execute. Can you please explain me how the server manages calls from different sessions and replies to individual sessions.
Thanks in advance,
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Well if doesn't raise an exception it succeeded. Is that sufficient acknowledgement?
Cheers, APC

Executing DOS command from within java.

I have an XML file and an XSLT stylesheet.
I want to process this XML file using XSLT stylesheet from java. Using saxon.
Here is the java class I wrote --
class DOSCommand {
public void exec_command(String[] cmd) {
try {
Process child = Runtime.getRuntime().exec(cmd);
} catch (IOException e){
System.out.println("Error");
System.out.println(e.getMessage());
finally{
System.out.println("Finally");
In my servlet class I am instantiating the DOSCommand object and calling the method
DOSCommand d = new DOSCommand();
String[] c = { "c:\\Program Files\\saxon\\saxon.exe", "-o",
"PO.html", "ePO.xml", "POE.xsl"
d.exec_command(c);
But I am not getting results. It does not give any error. But does not process the XML file and the Date/timestamp of PO.html does not change.
I know that Definition/Creation of DOSCommand object is not necesssary here. But we can disregard it.
Please let me know where I am going wrong !
Avinash.

Probably where you are going wrong is in failing to specify your working directory, so your command can't find "PO.html" and so on in the default working directory for that command. But that's not really the answer. The answer is not to do it in that way in the first place. Saxon has a Java API and its documentation has a section entitled "Embedding Saxon in an application".

Error when trying to truncate table from within PL/SQL

Hello.....
Does anyone know why I get an error when trying to execute the following command from within PL/SQL?
truncate table event;
The error is as follows:
ORA-06550: line 20, column 14:
PLS-00103: Encountered the symbol "TABLE" when expecting one of the following:
:= . ( @ % ;
The symbol ":= was inserted before "TABLE" to continue.

And as a DDL, it does a COMMIT just before it runs. Whether you want a COMMIT or not.
And with all the locking and serialization issues associated with a DDL.

Execute a command from servlet

Hello,
How can I execute this command from a servlet ?
example: I want execute "java -cp /root/:/root/log/api/:/root/log/apps/ Transmitter" when I lunch servlet1.java
so which class in JAVA can do this ?
Thanks ?

why u want to run another program? Usually you call the methods within the second program.
Is it possible to invoke another program in the server using a servlet? If so it could even mess up the whole server. I am not sure.

Issue with Executing OS commands from Stored Procedure

I am trying to execute the scripts provided at :
http://github.com/xtender/XT_SHELL
provided by xtender user.
As required, I have asked my DBAs to grant privileges by executing the following scripts:
Begin
--change to needed permissions and execute
dbms_java.grant_permission( 'ODS', 'SYS:java.io.FilePermission', '/var/factiva/ODS/bin/CVIM_Rpt_ExportCSVFile’, 'read,write,execute' );
end;
/where CVIM_Rpt_ExportCSVFile is my script residing in the Unix server where my Oracle is installed.
The error I am facing when I try to execute the following command is:
select * from table(xt_shell.shell_exec('/var/scripts/CVIM_Rpt_ExportCSVFile',100))
Exception:the Permission (java.io.FilePermission /var/scripts/CVIM_Rpt_ExportCSVFile execute) has not been granted to ODS. The PL/SQL to grant this is dbms_java.grant_permission( 'ODS', 'SYS:java.io.FilePermission', '/var/scripts/CVIM_Rpt_ExportCSVFile', 'execute' )I have asked my DBA to also execute the following scripts: - But I still see the same error as above. I am not able to figure out whats going on. Can anyone pls help me out??
EXEC Dbms_Java.Grant_Permission('ODS', 'SYS:java.lang.RuntimePermission', 'writeFileDescriptor', '');
EXEC Dbms_Java.Grant_Permission(ODS', 'SYS:java.lang.RuntimePermission', 'readFileDescriptor', '');
dbms_java.grant_permission( 'ODS', 'SYS:java.io.FilePermission', '/var/scripts/CVIM_Rpt_ExportCSVFile', 'execute' )

DUPLICATE
===============================================================
Issue with Executing OS commands from Stored Procedure
==============================================================

What is the trick to 'exec' UNIX commands from within IDM?

Hellos...
We need to change the permissions of a file which an IDM script writes.
Basically I call this rule to write bytes to a file. The write method works but the exec fails.. I dont see permissions set to "666".
<block trace='true'>
<defvar name='retBuff'/>
<invoke name='writeFileUtf8' class='com.waveset.util.Util'>
<ref>fileName</ref>
<ref>xmlData</ref>
</invoke>
<set name='retBuff'>
<invoke name='exec' class='com.waveset.util.Util'>
<concat>
<s>chmod 666 </s>
<ref>fileName</ref>
</concat>
</invoke>
</set>
</block>
What is the correct method (or any way which works) to run shell commands from within IDM??????

Ok. There is no 'trick' just an appreciation of what is being executed, where.
This rule works. I was foolish in testing it via the BPE.
I start the BPE on my laptop which connects to a UNIX server. Silly me was trying to run a UNIX command on my laptop. oops.
Opening an xwindows session and starting the BPE on UNIX gives the expected results. Not sure when the BPE is finally killed off (we are on IDM 7.1) how does NetBeans handle this situation.
GF

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 execute Linux command from Java app.

Hi all,
Could anyone show me how to execute Linux command from Java app. For example, I have the need to execute the "ls" command from my Java app (which is running on the Linux machine), how should I write the codes?
Thanks a lot,

You can use "built-in" shell commands, you just need to invoke the shell and tell it to run the command. See the -c switch in the man page for your shell. But, "ls" isn't built-in anyays.
If you use exec, you will want to set the directory with the dir argument to exec, or add it to the command or cmdarray. See the API for the variants of java.lang.Runtime.exec(). (If you're invoking it repeatedly, you can most likely modify a cmdarray more efficiently than having exec() decompose your command).
You will also definitely want to save the returned Process and read the output from it (possibly stderr too and get an exit status). See API for java.lang.Process. Here's an example
java.io.BufferedReader br =
new java.io.BufferedReader(new java.io.InputStreamReader(
Runtime.getRuntime().exec ("/sbin/ifconfig ppp0").
getInputStream()));
while ((s = br.readLine()) != null) {...

Execute DOS command from SAP

hi experts ,
i need to execute DOS command from SAP .
earlier we have 'GUI_EXEC' WS_EXECUTE , 'WS_DOWNLOAD' etc which are Obsolete now.
as we are using ECC6.0. kindly guide how to do this.
best regards,
Rahul

Try out...
DSVAS_DOC_WS_EXECUTE_50
or
CL_GUI_FRONTEND_SERVICES=>EXECUTE
<b><REMOVED BY MODERATOR></b>
Thanks & Regards
ilesh 24x7
Message was edited by:
Alvaro Tejada Galindo

Execute linux command from java

I wanna execute linux command from java, bu the output has error:
Return code = 1
top: failed tty get
The code as:
import java.io.*;
public class Execute {
     public static void main(String[] args) {
          try {
               final Process process = Runtime.getRuntime().exec("top");
               new Thread() {
                    public void run() {
                         try {
                              InputStream is = process.getInputStream();
                              byte[] buffer = new byte[1024];
                              for (int count = 0; (count = is.read(buffer)) >= 0;) {
                                   System.out.write(buffer, 0, count);
                         } catch (Exception e) {
                              e.printStackTrace();
               }.start();
               new Thread() {
                    public void run() {
                         try {
                              InputStream is = process.getErrorStream();
                              byte[] buffer = new byte[1024];
                              for (int count = 0; (count = is.read(buffer)) >= 0;) {
                                   System.err.write(buffer, 0, count);
                         } catch (Exception e) {
                              e.printStackTrace();
               }.start();
               int returnCode = process.waitFor();
               System.out.println("Return code = " + returnCode);
          } catch (Exception e) {
               e.printStackTrace();
}Help please.

Your code is probably good to run a program, that does not use terminal capabilities.
Program "top" is a little bit more complicated - you have to run it with a real terminal.
Try to run "xterm -e top". You can find an example how to run an external program
from java code in cnd/gdb module on http://cnd.netbeans.org
For example, take a look at openExternalProgramIOWindow() method on this page:
http://cnd.netbeans.org/source/browse/cnd/gdb/src/org/netbeans/modules/cnd/debugger/gdb/proxy/Attic/GdbProxyCL.java?rev=1.1.2.6.2.5&only_with_tag=release551_fixes&view=markup
It runs a command with external terminal.
Thanks,
Nik

Unable to execute Linux command from Java

Hi,
I am currently working on a code wherein i need to execute Linux command from Java. Below are some of the query i have.
1) Is there any efficient method of running OS commands from Java, rather than using Runtime and Process method.
2) Below is details of my code which fails in execution
**-- Java Version**
java version "1.6.0"
OpenJDK Runtime Environment (build 1.6.0-b09)
OpenJDK Server VM (build 1.6.0-b09, mixed mode)
-- Program Code ----
Where <path> = Path i put myself
package test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.*;
public class GetInode{
     * @param args
     public static void main(String[] args) {
          GetInode test = new GetInode();
          test.getInode();
     public void getInode(){
          String command = "/usr/bin/stat -Lt <path>;
          System.out.println(command);
          Process process;
          Runtime rt;
          try{
          rt = Runtime.getRuntime();
          process = rt.exec(command);
          InputStreamReader isr = new InputStreamReader(process.getErrorStream());
          BufferedReader bre = new BufferedReader(isr);
          BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream());
          System.out.println(bre.readLine());
System.out.println(br.readLine().split(" ")[7]);
          process.destroy();
          }catch (Exception ex){
               System.out.println("Error :- " + ex.getMessage());
------Output -------------
/usr/bin/stat -Lt "<path>"
/usr/bin/stat: cannot stat `"<path>"': No such file or directory
Error :- null
Can any one help me what is wrong and why i am unable to run the Linux command from Java.

For clarity purpose............i m submitting actual code here
--- Code ---
package test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.*;
public class GetInode{
* @param args
public static void main(String[] args) {
GetInode test = new GetInode();
test.getInode();
public void getInode(){
String command = "/usr/bin/stat -Lt \"/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt\"";
System.out.println(command);
Process process;
Runtime rt;
try{
rt = Runtime.getRuntime();
process = rt.exec(command);
InputStreamReader isr = new InputStreamReader(process.getErrorStream());
BufferedReader bre = new BufferedReader(isr);
BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
System.out.println(bre.readLine());
System.out.println(br.readLine().split(" ")[7]);
process.destroy();
}catch (Exception ex){
System.out.println("Error :- " + ex.getMessage());
--- Output ---
[ratz]s0898671: java GetInode
/usr/bin/stat -Lt "/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt"
/usr/bin/stat: cannot stat `"/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt"': No such file or directory
Error :- null
-- Linux Terminal --
If i copy the first line from the output and execute on Linux terminal her is the output that i get
[ratz]s0898671: /usr/bin/stat -Lt "/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt"
/afs/inf.ed.ac.uk/user/s08/s0898671/workspace/CASWESBLIN/TestFS/01_FIL_01.txt.txt 12003 24 81a4 453166 10000 1c 360466554 2 0 1 1246638450 1246638450 1246638450 4096
Can you just assist me where am i really making mistake.......i was wondering if the command that i pass from Java....can be executed on Linux terminal why is it faling to run from java.........and when i print the Error Stream for process output........it show cannot Stat.......

Executing OS command from within PL/SQL...

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