Calling linux / unix shell scripts from APEX

Hi -- I'm doing some prototyping, and would like to try calling a unix shell script on the server from within APEX.
Is this possible? Maybe thru Javascript? Other ways? Not sure if it's possible thru pl/sql.
FYI, I'm attempting to check username/password specified at login to see if it's a valid login
to another database (also specified at login). If there's an easier way to do this, I'd love to hear it!
We're highly motivated to have a single apex app work on multiple databases -- largely because of a lack of
administration resources on the other databases. All databases are accessible via database links from
the apex server (the links are necessary to implement other business rules), and I know I can get
the DML working. Powers that be prefer that Database Account authentication (or a facsimile thereof)
be used. I suspect I'm opening myself up to lots of criticism by disclosing this ... :)
Thanks for any ideas,
Carol

R -- If I understand you correctly, a pl/sql process in APEX could invoke a java program on the server. Is that correct?
If so, is there any reason it couldn't just call a unix shell script? Seems they're both just executables recognized by the OS....
I know I called unix scripts from embedded sql a billion years ago, but don't recall the method for doing that. What is
the syntax I'd use in apex / pl/sql?
thanks,
Carol

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Call a UNIX shell script from an oracle stored procedure

We need to call a UNIX shell script from an oracle stored procedure
i.e. the control should come back to the procedure once the script completes. Can any body help to achieve this ?

There are various ways in achieving this.
For Example, you can call a PRO*C-Library residing on the database server.
This requires a PL/SQL library to be generated and some changes to the Listener configuration.
It is also possible to implement a java procedure on the database being invoked by a PL/SQL wrapper class.
In this way (and if used right) there is also granularity regarding the filestructure permissions given and it may be called during a Forms or other PL/SQL session.
The article below explains a more generic approach how to invoke shell commands from within an Oracle Instance.
Be careful with this, because it really works ;)
Refer to :
http://www.oracle-base.com/articles/8i/ShellCommandsFromPLSQL.php
Message was edited by:
user434854

Need Example on calling a unix shell script from oracle stored procedure

Hi
Can anybody give example on how to call unix shell script from an Oracle stored procedure. Please give a small example on how to do this .I need this urgently please.
Have a nice time.
Thanks & Regards
Jogesh

If you are on 10g you can also use DBMS_SCHEDULER. See Re: Excute Unix command Using PL SQL

Calling shell script from apex application

Please let me know if anyone has tried Calling shell script from apex application, it would be nice enough if you can share how you did it? Thanks

Hi,
Requirements
* CREATE JOB (10g Rel.1)
* CREATE EXTERNAL JOB (10g Rel.2 / 11g)
* EXECUTE on dbms_scheduler (granted to public by default)
Since Oracle 10.2.0.2 the commands are executed as user nobody.
Code:
--Create a Program for dbms_scheduler
exec DBMS_SCHEDULER.create_program('RDS2008','EXECUTABLE','c:\ WINDOWS\system32\cmd.exe /c echo 0wned >> c:\rds3.txt',0,TRUE);
--Create, execute and delete a Job for dbms_scheduler
exec DBMS_SCHEDULER.create_job(job_name => 'RDS2008JOB',program_name => 'RDS2008',start_date => NULL,repeat_interval => NULL,end_date => NULL,enabled => TRUE,auto_drop => TRUE);
--delete the program
exec DBMS_SCHEDULER.drop_program(PROGRAM_NAME => 'RDS2008');
--Purge the logfile for dbms_scheduler
exec DBMS_SCHEDULER.PURGE_LOG;
This is one way as suggested by Trent.
We can also achieve as follows.
http://www.dba-oracle.com/t_execute_shell_script_plsql_procedure.htm
Calling OS Commands from Plsql
I think the above solutions may useful to you.
Let me know if you are facing any problem.
Thanks and Regards
Maheswara

Calling UNIX shell script from ODI package?

Hi,
How Can we call UNIX shell script from ODI package?
I have a ftp_ss.sh script which which ftps a file from remote server to local server, archives the last file and renames new file to the standard (ie file data store)name.
I want to run the above script and interfaces from a package.
Any help is greately appreciated.
Thanks,
RD

In the package window, put "OS Command" from the toolbox.
Provide the command parameters to this tool in form of "/path/to/script/ftp_ss.sh"

Can I call host file ( Unix Shell script ) from Oracle 10g trigger

Hi,
I am new to Oracle 10g. Can I call host file ( unix shell script ) from Oracle 10g trigger ?. I know it is possible. Pl explain me with small example
thanks & regards
parag

user12009546 wrote:
Hi,
I am new to Oracle 10g. Can I call host file ( unix shell script ) from Oracle 10g trigger ?. I know it is possible. Pl explain me with small example
thanks & regards
paragIf you are in 10g, you can simple call shell script from DBMS_SCHEDULER:
BEGIN
DBMS_SCHEDULER.CREATE_JOB (
job_name => 'TEST_SCRIPT',
job_type => 'EXECUTABLE',
job_action => 'PATH_OF_YOUR_SCRIPT',
start_date => SYSDATE,
repeat_interval => 'FREQ=MINUTELY; INTERVAL=1',
enabled => TRUE,
comments => 'Shell script from Oracle'
END;
/

Can i call unix shell script from B2B callout.

Hi,
We had a requirement to invoke a unix shell script from B2B callout implemented class. Here is the code in implementation class:
public void execute(CalloutContext context,List input,List output)
throws CalloutDomainException, CalloutSystemException {
try {
CalloutMessage cmIn = (CalloutMessage)input.get(0);
FileOutputStream fos = null;
String inputFile = "/home/orasoad/digitalsign/input/test.txt";
String outputFile = "/home/orasoad/digitalsign/output/test.txt.gpg";
File outFile = new File(inputFile);
String str =cmIn.getBodyAsString();
fos = new FileOutputStream(outFile);
Writer out = new OutputStreamWriter(fos);
out.write(str);
out.close();
String shellFile = "/home/orasoad/digitalsign/dg.sh";
String cmd[] = new String[] { shellFile, inputFile, outputFile };
Runtime rt = Runtime.getRuntime();
Process pr = rt.exec(cmd);
int i = pr.waitFor();
BufferedReader br = new BufferedReader(new InputStreamReader(pr.getInputStream()));
StringBuffer sb = new StringBuffer();
String line;
while ((line = br.readLine()) != null) {
sb.append(line);
CalloutMessage cmOut = new CalloutMessage(sb.toString());
output.add(cmOut);
} catch (Exception e) {
throw new CalloutDomainException(e);
We were able to execute the unix shell script from standalone java class with same code. But some how it is not working as expected while invoking the B2B java callout.
Is it possible to invoke unix shell script from B2B callout?
Please give inputs.
Regards,

Though it's not a good idea to invoke shell scripts from java callout but technically it will work.
But some how it is not working as expected while invoking the B2B java callout.What is not working as expected? Any error in the log (server-diagnostic.log or server.out)?
Regards,
Anuj

Error while executing unix shell script from java program

Hi All,
I am trying to execute unix shell script from a java program using Runtime.execute() method by passing script name and additional arguments.
Code snippet :
Java Class :
try{
     String fileName ="test.ksh";
     String argValue ="satish"; // value passed to the script
     String exeParam = "/usr/bin/ksh "+fileName+" "+argValue;
     Process proc = Runtime.getRuntime().exec(exeParam);
     int exitValue = proc.waitFor();
     sop("Exit Value is : "+exitValue);
catch(Exception e)
e.printStackTrace();
}Test.ksh
export -- application realated paths..
nohup abc.exe 1> test.log 2>&1;
$1
exit.By running the above java class , i am getting exit Value: 139 and log file test.log of 0 bytes.
when i am running the same command (/usr/bin/ksh test.ksh satish) manually, it's calling abc.exe file successfully
and able generate the logs properly.
Pls let us know where exactly i am stuck..
Thanks in advance,
Regards,
Satish

Hi Sabre,
As per the guidelines provided by the article, i had done below changes..
InputStream is = null;
InputStreamReader iStreamReader = null;
BufferedReader bReader = null;
String line = null;
try{
String fileName ="test.ksh";
String argValue ="satish"; // value passed to the script
String exeParam = "/usr/bin/ksh "+fileName+" "+argValue;
Process proc = Runtime.getRuntime().exec(exeParam);
is = proc.getErrorStream();
iStreamReader = new InputStreamReader(is);
bReader = new BufferedReader(iStreamReader);
System.out.println("<ERROR>");
while((line = bReader.readLine()) != null)
System.out.println("Error is : "+line);
System.out.println("</ERROR>");
int exitValue = proc.waitFor();
sop("Exit Value is : "+exitValue);
catch(Exception e)
e.printStackTrace();
Now , it's showing something like..
<ERROR>
</ERROR>

Run Unix command / Run Unix shell script from Forms9i

Hi,
I have a requirement to run Unix command and Unix shell scripts from Forms9i.
I know HOST command cannot be used directly. I also know we can create some JAVA stored procedure to perform the task, but I don't want to create any JAVA stored procedure as there are some security concerns.
Please point me towards any other way to achieve the same.
I would really appreciate your help.
Thanks,
Kumar

There is no reason why HOST can't be used. This is what it is for. As for using Java, it is not a stored procedure that you would be using, it would be imported Java (imported into the form).
The best way to use the HOST command is to call a script (.sh) rather than calling a Unix command directly. This is because HOST will not pick up environment variables set at the system level. So the script would first need to set the necessary environment variables then call the desired commands.

Execute a unix shell script from forms9i

Hi ,
I would like to execute a unix shell script form a form when they pressed a button. The forms server is on Linux machine. I tried but when I pressed the button nothings happen. Could some one please help me how I could get working.
Is there is a way I could execute the unix shell script from PL/SQL proceudre or package.
Please some one help me.
Bain

You would not expect to see anything happening because the
script cannot directly send output to the web form. However, you can get it to write output to a file and use web.show_document in the form after the host command to display the file and see the output.

How to execute unix shell script from Java ...

Hi,
Anyone know how to execute unix shell script from Java?
Suppose I have several shell scripts written in perl or tcl or bash.
I just want to catch the output of that script.
Is there any ready to use module/object for this?
Please let me know, this is quite urgent for my study assigment.
Thanks in advance,
Regards,
me

Look up Runtime.exec()

Invoking unix shell scripts from java?

Hi,
could someone explain to me how one wuld invoke unix shell scripts from java.
Also, could you invoke Visual Basic scripts from java.
Finally, could you do this from an EJB?
thanks for any help....
sudu

I just posted a snippet of this solution in the topic about widows commands chech it out it works just fine for unix shell scripts.
--Ian

Call Unix Shell Script From OBIEE

Hi All,
Is it possible to do a call to a Unix Shell Script with the Action Framework from OBIEE.
Thanks in Advance

I dont think so but we can go for it instead of BI side. Try to port the same functionality on shell script side, so that the script can identify your report using tail of nqquery log and execute the rest of your lines in shell script.
This can doable and works as expected. If at all you are going with my suggestion you can go for a small key word to identify your report instead of that lengthy logical query.
Pls mark if helps

Calling Unix shell script from PL/sql code

Hi
I need to call a shell script from a procdeure which i need to run in toad. Let me kno whow can i do that and connect to unix box with an example.

Thanks Avinash,
That on was very useful.
When I try to execute I got the following error.
Could you let me now What privileges are required?
SQL> BEGIN
dbms_scheduler.create_job(job_name => 'myjob',
job_type => 'executable',
job_action => '/home/rananto/a.sh',
enabled => TRUE,
auto_drop => TRUE);
END;
/ 2 3 4 5 6 7 8
BEGIN
ERROR at line 1:
ORA-27486: insufficient privileges
ORA-06512: at "SYS.DBMS_ISCHED", line 99
ORA-06512: at "SYS.DBMS_SCHEDULER", line 262
ORA-06512: at line 2
SQL> exec dbms_scheduler.run_job('myjob');
BEGIN dbms_scheduler.run_job('myjob'); END;
ERROR at line 1:
ORA-27475: "CRDM.MYJOB" must be a job
ORA-06512: at "SYS.DBMS_ISCHED", line 150
ORA-06512: at "SYS.DBMS_SCHEDULER", line 441
ORA-06512: at line 1

How to pass arguments to a Unix shell script from PL/SQL?

We want to run a Linux shell script from PL/SQL (10g). This is our code to run the script only and it works fine.
dbms_scheduler.create_job
          job_name=>'RUN_LINUX_SCRIPT_' || v_job_name,
          job_type=>'EXECUTABLE',
          job_action=>'/vol0/FileLoadDir/Bank/DATA_FILES/spell_check.sh',
          enabled=>TRUE,
          auto_drop=>FALSE
        );Now we have a requirement to pass 2 arguments to the .sh file. In the .sh file the 2 arguments are defined as $1 and $2.
I used this method.
dbms_scheduler.create_job
          job_name=>'RUN_LINUX_SCRIPT_' || v_job_name,
          job_type=>'EXECUTABLE',
          job_action=>'/vol0/FileLoadDir/Bank/DATA_FILES/spell_check2.sh',
          --job_action=>'/vol0/FileLoadDir/Bank/DATA_FILES/spell_check2.sh /vol0/FileLoadDir/Bank/DATA_FILES/ebill2.fmt_form_strings_.txt /vol0/FileLoadDir/Bank/DATA_FILES/abcdefghij.txt',
          --job_action=>'#!/bin/bash spell /vol0/FileLoadDir/Bank/DATA_FILES/ebill2.fmt_form_strings_.txt > /vol0/FileLoadDir/Bank/DATA_FILES/abcde.txt',
          number_of_arguments => 2,
          enabled=>FALSE,
          auto_drop=>FALSE,
          comments => 'Testing by Channa'
      DBMS_SCHEDULER.SET_JOB_ARGUMENT_VALUE (
        job_name                => 'RUN_LINUX_SCRIPT_' || v_job_name,
        argument_position           => 1,
        argument_value          => '/vol0/FileLoadDir/Bank/DATA_FILES/ebill2.fmt_form_strings_.txt');
      DBMS_SCHEDULER.SET_JOB_ARGUMENT_VALUE (
        job_name                => 'RUN_LINUX_SCRIPT_' || v_job_name,
        argument_position       => 2,
        argument_value          => '/vol0/FileLoadDir/Bank/DATA_FILES/abcdefghij.txt');
      DBMS_SCHEDULER.enable (name => 'RUN_LINUX_SCRIPT_' || v_job_name);But I get an error saying:
STANDARD_ERROR="/vol0/FileLoadDir/Bank/DATA_FILES/spell_check2.sh: line 4: read: `/vol0/FileLoadDir/Bank/DATA_FILES/ebill2.fmt_form_strings_.txt': not a valid identifier
/vol0/FileLoadDir/Bank/DATA_FILES/spell_check2"

Check this post:
pass parameter from PL/SQL to Unix "as is"

Calling linux / unix shell scripts from APEX

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