Solaris

#!/usr/bin/ksh
if [[ `ps -ef|grep dw.sap|grep userprd|wc -l` -lt 3 ]]; then
        mailx -s "PRD is down!" helpdesk@klm-ltd.org < /dev/null
fi

This is my code

#!/usr/bin/ksh
IAm=${0##*/}
read d hm <<-EOF
	$(LC_ALL=C date '+%a %H%M')
EOF
hm=${hm#0}	# Strip leading zero from hour and minute, if present.
case $d in
(Sun)	if [ $hm -ge 2100 ] || [ $hm -le 600 ]
	then	down=1
	fi;;
(*)	if [ $hm -ge 2100 ] && [ $hm -le 2130 ]
	then	down=1
	fi;;
esac
if [ "$down" == 1 ]
then	printf '%s: Exiting: Scheduled downtime.\n' "$IAm"
else if [ `ps -ef|grep dw.sap|grep userprd|wc -l` -lt 3 ]; then
        mailx -s "PRD is down!" helpdesk@klm-ltd.org < /dev/null
fi