多项选择题
A. log buffer
B. Java pool
C. Large pool
D. Fixed SGA
E. Shared pool
F. Streams pool
G. Keep buffer cache
H. Database buffer cache
单项选择题 ThedatabaseiscurrentlyrunningintheNOARCHIVELOGmode.WhatwouldbethefirststeptoconfigureFlashbackDatabase？（）
多项选择题 Youwanttoenforceacompany’sbusinesspolicyonseveralobjectsbyusingasinglepolicyfunction.Whichtwotypesofpoliciescanbeassignedtothepolicy_typeargumentinthedbms_rls.add_policyproceduretoachievetheaboveobjective？（）
单项选择题 Youenabledblockchangetrackingforfasterincrementalbackupsinyourdatabase.Whichbackgroundprocesswritestothechangetrackingfile？（）