2.Which three statements are true about pfiles, spfiles or both?
A) All spfile parameters can be modified successfully with the scope=both clause.
B) A spfile can be created by an idle instance.
C) spfiles and pfiles may both be edited with an O/S editing utility.
D) Some spfile parameters can be modified successfully with the scope=memory clause.
E) A pfile can be created by an idle instance.
F) All spfile parameters can be modified successfully with the scope=memory clause.
Anser：BDE
(解析：spfile 和 pfile 可以互相转换，而且不需要实例启动，参数分为静态参数和动态参数，只有动态参数才能够马上修改生效。备注来自ocp3群：1015267481)