@Tanel Poder
Ok, I can try it, I have a local instance where the only user session is my own.
I expect that I will see the increase in gets/immediate gets in v$latch to match the number of consistent gets in v$sesstat.
But how will it prove that the block wasn’t copied to the server memory CGA/UGA (transparently without increasing any counters)??
I think hard-core ways would be required :-)