My OCD was delighted this morning when I came across a new feature of SQL Developer: Connection Color. Brace yourselves, as this feature ain't much, but could have a huge impact on reducing accidental commands in the wrong schema or server. To use it, simply create or edit a database connection, and set the Connection Color to whichever color you choose: Once set, any and all windows associated with that connection will be outlined in that color. That's it! I already gleefully went through my connection list and associated different colors with different types of connections. For example, our development schemas got green: While our production schemas got red: Now, no matter what type of object I am editing, I will instantly know which schema it belongs to based on the color of the border. Simple AND effective!
Mostly Oracle APEX. Mostly.