I caught a short post from Gary Bargsley on LinkedIn that had this quote: "Many people do not believe this is true. If there isn't a fire to put out, then you are not doing a good job." He included a repost from Shaik Ashraf with that quote and an image that explains better what things a DBA is doing because they aren't always busy.

I would say that by busy we think of a DBA as rushed and always trying to fix something that isn't working well. I've certainly walked into operational positions where this was the case. Things weren't working smoothly or breaking regularly. My phone was always ringing, as I moved from crisis to crisis. For some systems, rebooting them regularly was the fix, not because I didn't want to determine a root cause and fix them, but because I had too many other priorities. A reboot at least recompiled plans, cleared caches, and got the system working for a few days.

Read the rest of The Improvement Limit