Which step is required for recover from an instance failure？ （）

多项选择题WhenCONFIGURECONTROLFILEAUTOBACKUPissettoON，RMANautomaticallyperformsacontrolfileautobackupinwhichthreesituations？（）

A.At the end of every RUN block. 
B.After every SET CONTROLFILE AUTOBACKUP FORMAT command. 
C.After every BACKUP or COPY command issued at the RMAN prompt. 
D.At the end of every RUN block if the last command in the block was either BACKUP or COPY. 
E.Whenever a BACKUP or COPY command within a RUN block is followed by a command that is neither BACKUP nor COPY. 
F.After every BACKUP or COPY command within a RUN block that is followed by the CONFIGURE CONTROLFILE AUTOBACKUP FORMAT command.

单项选择题You are creating a recovery catalog for use with RMAN. You have issued these commands： SQL> CREATE TABLESPACE rman_ts DATAFILE  ’ DISK1 rman_ts01.dbf’ 2> SIZE 20M 3> DEFAULT STORAGE （initial 100K next 100K pctincrease 0）； SQL> CREATE USER rman_db01 IDENTIFIED BY rman_db01 2> DEFAULT TABLESPACE rman_ts 3> QUOTA unlimited ON rman_ts；  Which command should you issue next？（）

A.RESYNC CATALOG；
B.REGISTER DATABASE；
C.CREATE CATALOG TABLESPACE rman_ts；
D.GRANT recovery_catalog_owner TO rman_db01；

多项选择题Whenacheckpointoccursthe（）.（）.and（）aresynchronized.

A.data files
B.control files
C.redo log files
D.parameter files
E.archive log files

单项选择题WhichstatementistrueregardingOracleSharedServerarchitecture？（）

A.A dispatcher can support multiple client connects concurrently while a shared server process can be dedicated to only one dispatcher. 
B.Under the Oracle Shared Server architecture, client-user processes connect to shared user processes.
C.Each dispatcher has its own request queue, which is monitored every three seconds by the dispatcher. 
D.Oracle Shared Server required Oracle Net Service even if the client and shared server processes reside on the same machine.

单项选择题Withdynamicserviceregistration，whichprocessregistersinstanceinformationwiththelistener？（）

A.SMON
B.PMON
C.shared server
D.dedicated server