多项选择题

Oracle Net is responsible for establishing and maintaining the connection between the client application and the server. On the client side， Oracle Net is responsible for which three connectivity issues？（）

A.The location of the server.
B.The Oracle user being connected.
C.Privileges and role information.
D.Protocol involved in the connection.
E.How to handle exceptions and interrupts.

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单项选择题Thelistenerusesdynamicinformationaboutthedatabaseandinstanceithasreceivedthroughserviceregistrationbeforeusinginformationstaticallyconfigured.Someservicessuchasheterogeneousservicesandexternalproceduresrequiretheuseofinformationstaticallyconfiguredwithinlistener.ora.Inordertosupportthis，whichtoolcouldbeusedtoconfigurethelistenerstatically？（）

A.Oracle Net Manager
B.Listener Control Utility
C.Oracle Net Control Utility
D.Oracle Net Configuration Assistant

单项选择题Whichinitializationparametermustyousettoenableautomaticarchiving？（）

A.LOG_ARCHIVE_DEST
B.LOG_ARCHIVE_START
C.LOG_ARCHIVE_FORMAT
D.LOG_ARCHIVE_MAX_PROCESSES

单项选择题YourdatabaserunsinNOARCHIVELOGmode，andisbackedupeverynightusingRMANscripts.However，lastnightyourassistantDBAperformedamanualoperatingsystembackup，insteadofrunningthescripts.Todayyourdatabasecrashedandyounowwanttousethebackupsfromlastnight.Whatdoyouneedtodo？（）

A.You need to perform the restore and recover operations manually, because the backup was made manually.
B.First you need to resynchronize the catalog with the control file, and then you can use RMAN to recover the database.
C.First you need to add the backup to the catalog using the CATALOG command, and then you can use RMAN to recover the database.
D.You can just use RMAN and recover the database, because RMAN automatically updates the catalog with the backup information.

单项选择题Whichfilesmustbesynchronizedinorderforadatabasetostart？（）

A.temp files
B.online data files
C.offline data files
D.read only data files

多项选择题Whichthreestatementsaretrueaboutdatabaserecoveryoperations？（）

A.Damaged or lost data files are restored from backups.
B.Redo log file entries are used to roll forward the database.
C.Undo segments are used to roll back any uncommitted transactions.
D.Transactions that were active when the failure occurred are restarted.
E.Transactions that were active when the failure occurred are automatically committed during the recover procedure.