create or replace and compile java source named util as
import java.io.*;
import java.lang.*;

public class Util extends Object
{

 public static int RunThis(String args)
 {
 Runtime rt = Runtime.getRuntime();
 int        rc = -1;

 try
 {
    Process p = rt.exec(args);

    int bufSize = 4096;
    BufferedInputStream bis =
     new BufferedInputStream(p.getInputStream(), bufSize);
    int len;
    byte buffer[] = new byte[bufSize];

    // Echo back what the program spit out
    while ((len = bis.read(buffer, 0, bufSize)) != -1)
       System.out.write(buffer, 0, len);

    rc = p.waitFor();
 }
 catch (Exception e)
 {
    e.printStackTrace();
    rc = -1;
 }
 finally
 {
    return rc;
 }
 }
}

To denote all files within a directory, provide the * symbol, as follows:
      /private/oracle/*