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.

Released as the terminal Patch Set for the 10g family, 10.2.0.5 represents the end of an era. It was the last hurrah for the "g" (grid) branding and the final stop before the drastic architectural changes of 11g and the cloud-native rush of 12c. oracle 10.2.0.5

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. But it is a classic car