Procedure failed to raise tar -cvzf command

Question

hi,
I am using the below specified procedure to raise the linux command from PL/SQL Environment. the procedure working fine for all the commands but when I am raising
the command 'tar -cvzf /home/oracle/sach.tar.gz *.csv' to archive all csv files from a directory then
its creating an Invalid (unextractable) archive file and even the dbms_lob is not recognizing this file and the same command is working fine from OS console and creating a valid archive.
please let me know what's wrong is happening and what i need to do to create valid archive file from the PL/SQL.
--configuration
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bi
PL/SQL Release 10.2.0.3.0 - Production
CORE     10.2.0.3.0     Production
TNS for Linux: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
--the grants i have:
EXEC Dbms_Java.Grant_Permission('SACH.', 'java.io.FilePermission', '<<ALL FILES>>', 'read ,write, execute, delete');
EXEC Dbms_Java.Grant_Permission('SACH', 'SYS:java.lang.RuntimePermission', 'writeFileDescriptor', '');
EXEC Dbms_Java.Grant_Permission('SACH', 'SYS:java.lang.RuntimePermission', 'readFileDescriptor', '');
GRANT CREATE external job to SACH;
--java source
CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED "OSCommand" AS
import java.io.*;
import java.lang.*;
public class OSCommand{
        public static String Run(String Command){
                Runtime rt = Runtime.getRuntime();
                int     rc = -1;
                try{
                        Process p = rt.exec( Command );
                        int bufSize = 32000;
                        int len = 0;
                        byte buffer[] = new byte[bufSize];
                        String s = null;
                        BufferedInputStream bis = new BufferedInputStream( p.getInputStream(), bufSize );
                        len = bis.read( buffer, 0, bufSize );
                        rc = p.waitFor();
                        if ( len != -1 ){
                                s = new String( buffer, 0, len );
                                return( s );
                        return( rc+"" );
                catch (Exception e){
                        e.printStackTrace();
                        return(  "-1\ncommand[" + Command + "]\n" + e.getMessage() );
FUNCTION OSexec( cCommand IN STRING ) RETURN VARCHAR2 IS
language        JAVA
name            'OSCommand.Run(java.lang.String) return java.lang.String';
Select eap_dgsc_schedule_pkg.OSexec('tar -cvzf /home/oracle/sach.tar.gz *.csv') from dual;     

Answer 1

Have you tried running the same command by passing a filename explicitly and check whether it is creating a valid archive.
Assuming if it does then my guess will be "*" is a wildcharacter which gets substituted by the Korn shell or C shell in linux/unix
before the tar command gets executed whereas in this scenario (execution from java) I believe it is trying to find for a file "*.csv".
$ tar -cvf test.tar.gz *.csv
a ire.csv 280 blocks
a jam.csv 66 blocks
a hello.csv 409 blocks
a abc.csv 98959 blocks
$ ls -ltr test.tar.gz
-rw-r--r--   1 home        home        51056640 Apr 30 17:02 test.tar.gz
$ tar -tvf test.tar.gz
rw-r----- 1006/1006 143228 Mar 20 15:48 2008 ire.csv
rw-r----- 1006/1006  33321 Mar 20 15:48 2008 jam.csv
rw-r----- 1006/1006 209098 Apr  9 14:28 2008 hello.csv
rw-r----- 1006/1006 50666720 Apr  7 12:06 2008 abc.csv
$ tar -cvf test.tar.gz "*.csv"
tar: cannot stat *.csv.  Not dumped.
-rw-r--r--   1 home        home          10240 Apr 30 17:02 test.tar.gzP.S : I have not tested your code (i.e) by using the routine you have given.
Just a thought
Regards
Raj
Message was edited by:
s.rajaram