Which two requirements are critically important to implement for your database backup strategy if you require a 24 hours a day， 7 days a week production environment？（）

单项选择题Managementhasdecidedthatthedatabasemustbeavailable24hoursaday，7daysaweek.Giventhisrequirement，whichtypeofbackupisrequired？（）

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

多项选择题OracleNetConfigurationAssistantisapost-installationtoolthatconfiguresbasicnetworkcomponentsafterinstallation.Whichfourcomponentsareincludedintheconfiguration？（）

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

多项选择题Whichtwofiletypesmustbeincludedinacloseddatabasebackuptakenwithoperatingsystemcommands？（）

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

多项选择题WhichfouroccurduringtheprocessingofarequestusingOracleSharedServer？（）

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.

单项选择题You have lost all members of your current redo log file group. You issue this query： SQL> select * from v$log；  GROUP#    SEQ#     BYTES        ARC STATUS            FIRST_NAME  1                  60           153600        NO INACTIVE            01-03-09：19：34  2                  61           153600        NO CURRENT            01-03-09：19：50  You then perform an incomplete recover. You receive this message： ORA-00279：  change 309141...03 09 01 19：50：14 Needed for thread 1  ORA-00289： suggestion ：  disk1 archive arch_61.rdo ORA-00280： change 309043 for thread 1 is in  sequence #61 Specify log： {=suggested | filename | AUTO | CANCEL} How should you respond to this message？（）

A.Enter the keyword AUTO.
B.Enter the keyword CANCEL.
C.Press the Enter or Return key.
D.Enter the filename ’/disk1/archive/log2a.rdo’.