多项选择题
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.
多项选择题 What are the prerequisites for performing flashback transactions? （）(Choose all that apply)
单项选择题 Examine the following PL/SQL block： SET SERVEROUTPUT ON SET LONG 10000 ECLARE report clob； BEGIN report ：= DBMS_SPM.EVOLVE_SQL_PLAN_BASELINE（）； DBMS_OUTPUT.PUT_LINE（report）； END； Which statement describes the effect of the execution of the above PL/SQL block？（）
多项选择题 Whichoperationrequiresthatyoucreateanauxiliaryinstancemanuallybeforeexecutingtheoperation？（）