单项选择题Which statement is true regarding the Archiver (ARCn) process,archived log files,and recovery? ()

A.A database backup, combined with archived redo log files, guarantees that all committed data can be recovered to the point of failure. 
B.During recovery the ARCn background process copies its redo entries identified for recovery by the control file to the data files. 
C.After each write to an archived log, the mandatory background process ARCn writes its log sequence number and the first and last SCN number within the log sequence to the control file. 
D.At database recover time, and archived redo log is uniquely identified for recovery use by its redo thread number and destination ID number retrieved from the control file.


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4.单项选择题Management has decided that the database must be available 24 hours a day, 7 days a week. Given this requirement, which type of backup is required?()

A.user-managed backups.
B.partial database backups.
C.consistent database backups.
D.inconsistent database backups.

5.多项选择题Oracle Net Configuration Assistant is a post-installation tool that configures basic network components after installation. Which four components are included in the configuration?()

A.Directory server
B.Hostname adaptor
C.TCP/IP host file
D.Connection Manager
E.connecting pooling
F.external procedures
G.listener names and protocol addresses
H.Net Service names in a tnsnames.ora file
I.naming methods the client uses to resolve connect identifiers

6.多项选择题Which two file types must be included in a closed database backup taken with operating system commands?()

A.data files
B.control file
C.password file
D.online redo log files
E.initialization parameter file

7.多项选择题Which four occur during the processing of a request using Oracle Shared Server?()

A.The dispatcher returns the response to the user.
B.The dispatcher places the request into the request queue.
C.The shared server places the response in the response queue.
D.The response is handed off to the next available dispatcher.
E.A shared server picks up the request from the request queue and processes the request.

9.单项选择题

There is a problem with one of the disks used for your database and your system administrator informs you that the disk needs to be replaced. The replacement disk will not be available until tomorrow. 
There was only one data file on this disk; it belongs to the USERS tablespace in your PROD database. Your PROD database runs in ARCHIVELOG mode and nightly online backups are taken. The users need to be able to access the data in the USERS tablespace before the replacement disk arrives. You have already taken the USERS tablespace offline and have restored the data file from last night’s backup to a new disk. Which additional steps are required in order to make the USERS tablespace available?()

A.Only bring the tablespace back online.
B.Only recover the tablespace and then bring the tablespace back online.
C.Shut down the database, recover the data file and then start up the database.
D.Issue the ALTER DATABASE RENAME FILE command, recover the tablespace, and then bring the tablespace online.
E.Recover the tablespace, issue the ALTER DATABASE RENAME FILE command, and then bring the tablespace online.

10.多项选择题Which two are characteristics of user-managed backup and recovery operations?()

A.Recovery is initiated using SQL*Plus.
B.Database files are backed up using SQL commands.
C.Database files are backed up with Recovery Manager.
D.Database files are restored using Recovery Manager.
E.Database files are backed up using operating system commands.

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Which of the following dynamic view would you query to identify the online CURRENT redo log group?()

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As a result of a media failure, the current online redo log group is corrupted. The database crashes, as the current online group is inaccessible. Which type of incomplete recovery are you most likely to perform? ()

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