#!/bin/ksh
################################################################################
#   The script  at "full-pathname-to-executable" referenced  in the call  to the
#   procedure dbms_scheduler.create_job.  Note that  the environment for this OS
#   process is VERY  empty - it doesn't  even contain a PATH, so  you'll need to
#   bootstrap assuming nothing ...
################################################################################

PATH=/usr/bin:/usr/ucb:/usr/sbin: ...
export PATH

var_1=$1
var_2=$2

...