单项选择题

Which are required initialization parameters in an Oracle Shared Server environment？（）

A.DISPATCHERS and SHARED_SERVERS
B.DISPATCHERS and MAX_DISPATCHERS
C.MAX_DISPATCHERS and MAX_SHARED_SERVERS
D.SHARED_SERVER_SESSIONS and DISPATCHERS

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多项选择题

Whichthreetypesofinformationdoesthecontrolfilecontain？（）

A.Current log sequence.
B.Recover tuning parameters.
C.Redo log names and locations.
D.Data file names and locations.
E.Undo segment names and locations.

单项选择题

YouareoperatingyourdatabaseinNOARCHIVELOGmode.Yourmostrecentbackupincludesacopyofallofthedatafilesandthecontrolfilestakenwhenthecurrentlogsequencenumberwas45.YouexperiencediskfailureonthedriveonwhichyourSYSTEMtablespacedatafilesarestored.Atthetimeofthefailure，thecurrentlogsequencenumberis98.WhichfilesshouldyourestoretorecoverfromthelossoftheSYSTEMtablespacedatafiles？（）

A.Only the data files.
B.All of the data files and the control files.
C.Only the data files belonging to the SYSTEM tablespace.
D.Only the data files belonging to the SYSTEM tablespace and the control files.