Since Mike opened the door to mentioning products that can help in this space, let me add IBM Operations Manager for z/VM.
It allows you to monitor spool space and set different triggers at different % full "ranges". I.e. at 50%-75% full, send a message to OPERATOR, at 75%-85% full, send someone an e-mail, etc. It also allows y ou to trigger something based on growth in % full. I.e. if it grew 20 percentage points in the last 10 minutes (even if it's only at 45% full), do something. Tracy Dean, IBM
