Have a war story about migrating off 10.2.0.5? Or are you still running it in production? Let me know in the comments—I promise I won't judge.
If you are on 10.2.0.5, treat it as a critical technical debt item. Plan your escape to at least 19c (or 23ai). If you can't escape, lock it in a dark room, back it up twice, and don't touch it. oracle 10.2.0.5
But it is a classic car. It is fun to look at in a museum, and it might get you to the corner store, but you wouldn't drive your family across the country in it. Have a war story about migrating off 10