多项选择题
A.block level
B.object level
C.schema level
D.segment level
E.tablespace level
单项选择题 Youhave100segmentsintheUSERStablespace.YourealizethattheUSERStablespaceisrunninglowonspace.YoucanuseSegmentAdvisorto（）.
单项选择题 Youhave100segmentsintheUSERStablespace.YougetanalertthattheUSERStablespaceisrunninglowonspace.Youdecidetoshrinksomesegments.Whichoptionwouldyouusetodeterminewhichsegmentstoshrink?（）
单项选择题 YouexecutedthefollowingSQLstatementtoshrinktheEMPLOYEEStablesegmentstoredintheEXAMPLEtablespace:ALTERTABLEemployeesSHRINKSPACECASCADE;Whichstatementiscorrectinthisscenario?（）