"Hi, this is Fred, the DB is down. Call me.", is not an appropriate message.
First of all, Fred who? Fred in accounting or Fred in customer service. It makes a difference to me.
Which DB is down? OK, so you don't know the exact database, tell me the application you are using.
Oh, and Fred, leave me a number where I can get back to you. It's 2:00 in the morning and I'm nowhere near a computer to lookup your number.
A properly constructed message would have been:
"Hi, this is Fred in accounting. I'm having a problem logging into Oracle Financials and am getting a 404 error message. Please call me at extension 1234."