Luis Santos said...I tested and can assure: this is fully working on 12.2!
I also tested on 11g and 12.1. Not working. It arrived (silently and not supported, but working) on 12.2.
Each release includes functionality that doesn't make it through regression testing, so it is not considered available and supported. Unless a patch fixed it subsequently, it's possible it is unsafe to use in some circumstances, so I would avoid it until 18c.
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