14.Which two statements are true regarding hot patching? (Choose two.)
A. It requires relinking of the Oracle binary.
B. It does not require database instance shutdown.
C. It can detect conflicts between two online patches.
D. It is available for installing all patches on all platforms.
E. It works only in a single database instance environment.
Answer: BC
答案解析：
参考：http://blog.csdn.net/rlhua/article/details/16574625
安装热补丁程序
• 应用热补丁程序不需要关闭实例、重新链接Oracle二进制文件或重新启动实例。
• OPatch 可用于安装或卸载热补丁程序。
• OPatch 可以检测两个热补丁程序之间以及热补丁程序与常规补丁程序之间的冲突。