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In which two aspects does hot patching differ from conventional patching?（）
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.

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出自：Oracle认证

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