Tried 3 times, got the locked out error. Got frustrated, said I'd fix it after lunch, went out to eat, came back about 3 hours later after a doctor's appointment.
My boss was waiting for me at the department door and I got sent back to his office for a stern talking to. I had locked out the production user from the database, causing every app in the company to go offline. I was then told to read aloud back all of the projected sales losses from that day as well as write a bunch of letters for our top sales people who couldn't make sales that day.
Wasn't fired (thankfully). Made it to a senior lead, so if I had to say anything, it's that the punishment really made it really drive home and I _never ever did it again_ . :)