In which two aspects does hot patching differ from conventional patching? (Choose two.)
A.
It consumes more memory compared with conventional patching.
B.
It can be installed and uninstalled via OPatch unlike conventional patching.
C.
It takes more time to install or uninstall compared with conventional patching.
D.
It does not require down time to apply or remove unlike conventional patching.
E.
It is not persistent across instance startup and shutdown unlike conventional patching.
I think B is also correct see
http://askdba.org/weblog/2012/06/11gr2oracle-online-patching/
I have not found a source, where the memory consumption is compared.
It seems to me that B and D are the correct answers:
http://docs.oracle.com/cd/B28359_01/em.111/b31207/oui7_opatch.htm#CHDCGJEB
No its not because you can roll back conventional patches with opatch… but B says “unlike” conventional patching