Users complain SQL statements using a particular index fail. Using DBVERIFY， you find that two separate blocks in the index have become corrupt. The database data files for user data and index are very large. 
What is the least disruptive recover strategy available in Oracle9i？（）

单项选择题Examine this syntax which allocates channels during a parallel image copy：   RMAN> CONFIGURE DEVICE TYPE disk parallelism 4：  2> COPY  3> datafile 1 TO ‘ BACKUP datafile1.dbf’，  4> datafile 2 TO ‘ BACKUP datafile2.dbf’，  5> datafile 3 TO ‘ BACKUP datafile3.dbf；  RMAN>COPY  2> datafile 4 TO ‘ BACKUP datafile4.dbf’；   How many channels are used？（）

A.0
B.1
C.3
D.4

单项选择题YouarereadytoimplementRMANinthebackupandrecoverstrategyforyourcompany.WhichsystemprivilegemusttheRMANuserhavetobeabletoconnectandexecuteRMANcommandsonatargetdatabase？（）

A.SYSDBA
B.SYSOPER
C.No system privileges are required for the RMAN user.
D.Only SYS user can connect and execute RMAN commands on a target database.

单项选择题Youneedtorecoverfivedatafilesthatarespreadacrossmultipledisks.Whichinitializationparametershouldyousettospeedupredoapplication？（）

A.RECOVERY_PARALLELISM
B.FAST_START_MTTR_TARGET
C.LOG_CHECKPOINT_INTERVAL
D.FAST_START_PARALLEL_ROLLBACK

单项选择题ClicktheExhibitbuttonandexaminethediagram，whichillustratesthecomponentsperformingtaskswithinanOracleSharedSeverenvironment.Whichtaskisbeingperformedbycomponent4？（）

A.The PMON process registers the request in the response queue.
B.A shared sever places the process request in the response queue.
C.A request within the request queue is processed by an idle shared server process.
D.A dispatcher assigns a request from the request queue to and idle shared server process.

单项选择题What is true about this statement used during import？（） imp hr hr tables= （employee， departments） file=hr.dmp ignore=y

A.It ignores duplicates.
B.It prevents character set translation on import.
C.It allows rows to be inserted into a table that already exists.
D.It ignores storage parameters in the DML executed during import.