多项选择题
A. The datafiles that make up a self-contained group of tablespaces required for copy
B. The system tablespace
C. An export of the tablespace metadata
D. The spfile
E. All of the above
单项选择题 Whichofthefollowingdescribeshowadistributedresumabletransactionbehaves？（）
单项选择题 Toenableresumablespaceallocationfortheinstance，whichofthefollowinginitializationparametersshouldyousettoanonzerovalue？（）
单项选择题 WhentuningAutomaticPGAMemoryManagement，whichofthefollowingviewswillprovidetheinformationspecified？（）