Executing Unix Sun Solaris Commands Using ORACLE PL/SQL trouble with permissions

I have created 2 procedure and a java source

One procedure is calling java class TestHostCommand

 PROCEDURE TEST2
  (p_command IN Varchar2)
   AS LANGUAGE JAVA
    NAME 'TestHostCommand.executeCommand(java.lang.String)';

Java Source is:

import java.io.*;

public class TestHostCommand
{

public void executeCommand(String command)
 {
Runtime rt = Runtime.getRuntime();
Process p = null;
try
{
  p = rt.exec("ls > /Orion/list/list.txt");
  retu开发者_运维问答rn;
} catch ( IOException ioe)
  {
    System.out.println("Error executing file");
  }
}

}

And the other Procedure is to grant permissions but it is generated incorrectly:

     PROCEDURE GRANT_PERMISSION
      (grantee            IN  VARCHAR2,
       permission_type    IN  VARCHAR2,
       permission_name    IN  VARCHAR2,
       permission_action  IN  VARCHAR2)


        IS
        BEGIN
         DBMS_JAVA.grant_permission ('ORION', 'java.io.FilePermission',
                                   '<>', 'read ,write, execute, delete');

         DBMS_JAVA.grant_permission ('ORION', 'SYS:java.lang.RuntimePermission',
                                               'writeFileDescriptor', '');

          DBMS_JAVA.grant_permission ('Orion', 'SYS:java.lang.RuntimePermission',
                                                 'readFileDescriptor', '');

           END; 

Error is invalid object.

Thanks

---

The third parameter in the first statement should be a file or directory path, e.g.

     DBMS_JAVA.grant_permission ('ORION', 'java.io.FilePermission',
                               '/home/orion/*', 'read ,write, execute, delete');

Alternatively you could just grant ORION the JAVASYSPRIV role instead, as it's pretty much what you're doing anyway.

Either way, granting maximal privileges to ORION makes the account very poweful, and one which you will need to control tightly, especially in production environments.