I am the DBA for about 25 servers which are a combination of production and test systems some of which are physical machines and some are in a virtual environment. Seven of these servers are Oracle database servers and four are used in two SQL Server clusters. I was the first, and have been the only DBA here and learned everything I know over the last ten years from the 'school of hard knocks' and through Oracle and Microsoft training classes. I was hired as a systems analyst and took the DBA postilion when the position was created. Fortunately, all of our applications are 'canned' so I do very little developer related work and perform mostly production DBA tasks. I could use some help 'cause I don't always get to check all my servers every day, but there is no way they will hire another DBA here (we are a local government). It is not all that bad, while I am on call 24/7, I have gotten things to the point where I don't get called much at all and as long as I stay on top of things I get very few 'surprises'.