Interesting case Roy came across a week ago with a customer in the US. The customer received a plugin violation because of different
DB_BLOCK_SIZE between the source and the destination database. This happened regardless of unplug/plug or plugging in a non-CDB into a CDB. Hence the question came up: Can you have different block sizes when you plugin?
It should be possible – but you may need a tiny little workaround to make it happen.
The documentation as far as I can see was not helpful. MOS Note: 1935365.1 (Multitenant Unplug/Plug Best Practices) wasn’t very helpful either.