As a dba you always have to remember that you are the steward of the databases, have a supporting role, and that you should use your skills to the benefit and success of all people in the organization you work for.
So: Use your skills to keep the databases happy and healthy knowing that there will be the constant pressure of changing requirements.
This includes but is not limited to:
- Supporting the development teams, helping them succeed, educating them, showing them for instance how you tune queries, what to look for, etc.
- Maintaining sufficient performance headroom in your hardware, so that if something is going wrong it doesn't immediately escalate into heavy service impact.
- Monitor, monitor, monitor. Make sure you have 360 degrees visibility, so that if something changes that has impact, you can identify it rapidly and help fix the problem.
'Traffic cop' dba's have no place in the current rapidly changing business environment.