Executing shell script through PL/SQL

Question

Hi,
I need some help regarding execution of shell script through Oracle PL/SQL.
I have a shell script present in /abc/xyz folder with name search.sh , Through a PL/SQL procedure I am creating a file to store the report data.
I want to execute /abc/xyz/search.sh from the PL/SQL procedure to delete all files created before 3 mins .
1.     At first I took Java route and got following permissions granted for RECON user.
GRANT USER SYS java.io.FilePermission <<ALL FILES>> execute ENABLED 351
GRANT USER SYS java.lang.RuntimePermission readFileDescriptor * ENABLED 350
GRANT USER SYS java.lang.RuntimePermission writeFileDescriptor * ENABLED 349
2.     Then I created a simple java class for execution of OS command as below
CREATE OR REPLACE AND COMPILE JAVA SOURCE NAMED "OSCommand" AS
import java.io.*;
import java.util.*;
public class OSCommand{
public static String Run(String Command){
try{
Process proc = Runtime.getRuntime().exec(Command);
int ext=proc.waitFor();
return ("0");
catch (Exception e){
System.out.println("Error running command: " + Command +
"\n" + e.getMessage());
return(e.getMessage());
3.     And a wrapper function as below to use this class
create or replace
FUNCTION OSCommand_Run(Command IN STRING)
RETURN VARCHAR2 IS
LANGUAGE JAVA
NAME 'OSCommand.Run(java.lang.String) return int';
4.     In my PL/SQL proceedure I am using following code to execute the command
v_Return := OSCommand_Run('/abc/xyz/search.sh');
to execute the shell script.
Proceedure executes without any error and generates a new csv file with report data , however shell script does not get executed and hence all csv files created earlier remain as it is in the folder.
Please help.

Answer 1

Sven W. wrote:
What happens if you remove the catch exception block from your java command?
I asume you still might have a permission issue. But it could be hidden from you, because of the exception is catched and printed into nirvana.Executed the wrapper function OSCOMMAND_RUN as below
DECLARE
v_Return VARCHAR2(2000);
BEGIN
v_Return := OSCOMMAND_RUN('/recon/html/invoice/search.sh' );
DBMS_OUTPUT.PUT_LINE('v_Return = ' || v_Return);
END;
And following is the result
v_Return = 0
Process exited.
In case of exception it would had printed the exception.
One more thing I noticed, even though I have taken following permissions
GRANT     RECON     SYS     java.io.FilePermission     /abc/*     execute     ENABLED     347
GRANT     RECON     SYS     java.io.FilePermission     /abc/xyz/*     execute     ENABLED     351
GRANT     RECON     SYS     java.io.FilePermission     <<ALL FILES>>      execute     ENABLED     352
GRANT     RECON     SYS     java.lang.RuntimePermission     readFileDescriptor     *     ENABLED     350
GRANT     RECON     SYS     java.lang.RuntimePermission     writeFileDescriptor     *     ENABLED     349
When I create a new search.sh in /abc dir I get following error
v_Return = the Permission (java.io.FilePermission /abc/search.sh execute) has not been granted to RECON. The PL/SQL to grant this is dbms_java.grant_permission( 'RECON', 'SYS:java.io.FilePermission', '/abc/search.sh', 'execute' )
Edited by: 960702 on Sep 25, 2012 10:34 AM