Why don't you keep them all in a single script, and start that at 01:30? Then it's much easier to see if the first subjob failed.
Code:
if in_pps_state_change.sh; then
in_pps_cos_change.sh
in_pps_usage_change.sh
fi
You could even run them with "at" if running them at a particular time is important. But then, you need to be sure that in_pps_state_change.sh finishes before the next job is due.
Code:
if in_pps_state_change.sh; then
# Todo: maybe die a horrible death if the time is already past 03:00
echo /u14/ods/scripts/in_pps_cos_change.sh | at 03:00
echo /u14/ods/scripts/iin_pps_usage_change.sh | at 04:30
fi
