Monitoring space

I am curious if anyone can suggest to me a way to monitor available space in dbspaces automatically and warn when it drops to a critical level. We currently have a space with several chunks totally 100M. It ran out of space this morning, and we had to add another chunk. I would like to be wraned of this so I could correct it before we actually run out. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | Elizabeth Finson efinson@uswest.com| | Web Site/Systems Administrator (206) 345-2751| | U S WEST Creative Services | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | Look: trees do exist; the houses that we live in still | | stand. We alone fly past all things, as fugitive as the | | wind. -- Rainer Maria Rilke | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~