One of the tablespaces is read­only in your database. The loss of all control files forced you to re­create the control file. 
Which operation do you need to perform after re­creating the control file and opening the database？（）

单项选择题YoulostthePRODSTDtablespace，whichwasread write.Thetablespacewasread­onlywhenthelastbackupwasperformed.Howwouldyourecoverthetablespace？（）

A.restore the tablespace from the backup; there is no need to apply the redo information 
B.restore the full database to recover the data up to the point when you performed the backup 
C.restore the tablespace from the backup， and then perform a recovery using the backup control file
D.restore the tablespace from the backup， and then recover the tablespace; all the redo information from the point when the tablespace was made read/write is applied

多项选择题Younoticedthattheindextablespaceinyourdatabaserequiresarecovery.However，insteadofperformingamediarecovery，youdecidedtore­createtheindexesinanewtablespace.Whichtwooptionswouldyouusetoreducethetimeittakestore­createtheindexes？（）

A.ONLINE
B.REVERSE
C.PARALLEL
D.COMPRESS
E.NOLOGGING
F.COMPUTE STATISTICS

多项选择题You lost the index tablespace in your database. You decided to re­create the index tablespace and the indexes in the tablespace.  What methods can you use to re­create the indexes？（）

A.Data Pump
B.SQL scripts
C.SQL*Loader
D.Flashback database
E.Recovery Manager （RMAN） script

单项选择题Youlosttheindextablespaceinyourdatabase.Youarenotabletousetablespacepoint­in­timerecoveryontheindextablespace.Whatcouldbethereasonforthis？（）

A.The index tablespace contains bitmap indexes.
B.The index tablespace contains more than one data file.
C.The index tablespace supports only complete recovery.
D.The index tablespace is not a dictionary­managed tablespace.
E.There is a dependency relationship between a table and its indexes.

单项选择题In your database， online redo log files are multiplexed and one of the members in a group is lost due to media failure.  How would you recover the lost redo log member？（）

A.import the database from the last export
B.restore all the members in the group from the last backup
C.drop the lost member from the database， and then add a new member to the group
D.restore all the database files from the backup， and then perform a complete recovery 
E.restore all the database files from the backup， and then perform an incomplete recovery