You are about to create your Oracle data dictionary for use with the database. Which of the following users would you connect to the database as for this purpose in Oracle9i and later releases?（）

单项选择题YouareusingtheDatabaseConfigurationAssistanttoconfigureyourOracledatabase.Whichofthefollowingtermspertainstothecreationofanobjectfromwhichcreationoftheotherdatabasecanbebased?（）

A.Clone 
B.Copy 
C.Template 
D.Terminal 

单项选择题YouissuethefollowingcommandinOracle:CREATETABLESPACEDAT_TBSDATAFILE dat_tbs.dbf SIZE2M;.Laterqueriesagainstthedatabaserevealthatthetablespaceislocatedinthe u01 oradata oracledirectory.WhichofthefollowingchoicesidentifieshowOraclelikelydeterminedwhatdirectorytoplacedat_tbs.dbffilein?（）

A.DB_CREATE_FILE_DEST 
B.DB_CREATE_ONLINE_LOG_1 
C.DB_CREATE_ONLINE_LOG_2
D.The directory is an operating system-specific default value in Oracle that can neigher be specified manually nor changed

单项选择题YouaremanagingtheOracledatabase.WhichofthefollowingchoicescorrectlyidentifieswhenOraclereadsthecontentsoftheinit.orafile?（）

A.When the instance is started 
B.When the database is mounted 
C.When the database is opened 
D.When the database is closed

单项选择题AuserissuesaSELECTcommandagainsttheOracledatabase.WhichofthefollowingchoicesdescribesastepthatOraclewillexecuteinsupportofthisstatement?（）

A.Acquire locks on table queried 
B.Generate redo for statement 
C.Fetch data from disk into memory 
D.Write changes to disk

单项选择题Youhavealong-runningprocessyouwanttoassigntoaspecificUNDOsegmentbroughtonlineforthatexpresspurpose.YouarenotusingautomaticUNDOmanagement.Whatstatementcanbeusedforthistask?（）

A.ALTER DATABASE 
B.SET TRANSACTION 
C.ALTER ROLLBACK SEGMENT 
D.ALTER TABLE