A system administrator needs to backup datavg which contains a database that pre-allocates files by padding them with nulls, similar to treating them as sparse files. In order to effectively backup and be able to restore the datavg files, which backup met

题目

A system administrator needs to backup datavg which contains a database that pre-allocates files by padding them with nulls, similar to treating them as sparse files. In order to effectively backup and be able to restore the datavg files, which backup method should be used?（）

A.savevg

B.tar

C.cpio

D.mksysb

相似考题

1.Examine the following command used to perform incremental level 0 backup:RMAN> BACKUP INCREMENTAL LEVEL 0 DATABASE;To enable the block change tracking, after the incremental level 0 backup you issued the following command:SQL> ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USINGFILE ‘/mydir/rman_change_track.f‘;To perform incremental level 1 cumulative backup, you issued the following command:RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;Which two statements are true in the above situation?（）A. The block change tracking data will be used only from the next incremental 0 backup.B. The incremental backup will use change tracking data for accomplishing the backup.C. The incremental backup will not use change tracking data for accomplishing the backup.D. The block track file will scan all the blocks and create bitmap for all the blocks backed up in the level 0 backup.

2.Examinethefollowingcommandusedtoperformincrementallevel0backup：RMAN>BACKUPINCREMENTALLEVEL0DATABASE；Toenabletheblockchangetracking，aftertheincrementallevel0backupyouissuedthefollowingcommand：SQL>ALTERDATABASEENABLEBLOCKCHANGETRACKINGUSINGFILE’/mydir/rman_change_track.f’；Toperformincrementallevel1cumulativebackup，youissuedthefollowingcommand：RMAN>BACKUPINCREMENTALLEVEL1CUMULATIVEDATABASE；Whichtwostatementsaretrueintheabovesituation？（）A.Theblockchangetrackingdatawillbeusedonlyfromthenextincremental0backup.B.Theincrementalbackupwillusechangetrackingdataforaccomplishingthebackup.C.Theincrementalbackupwillnotusechangetrackingdataforaccomplishingthebackup.D.Theblocktrackfilewillscanalltheblocksandcreatebitmapforalltheblocksbackedupinthelevel0backup.

3.Youexecutedthefollowingcode:BACKUPVALIDATEDATABASE;BLOCKRECOVERCORRUPTIONLIST;Whatwillbetheresultofexecutingtheabovecode?()A.ThecodewillrunabackupvalidationtopopulatetheV$BACKUP_CORRUPTIONviewandrepaircorruptblocks，ifany，recordedintheview.B.ThecodewillrunabackupvalidatetopopulatetheV$COPY_CORRUPTIONviewandthenrepairanycorruptblocksrecordedintheview.C.ThecodewillrunsabackupvalidatetopopulatetheV$DATABASE_BLOCK_CORRUPTIONviewandthenrepaircorruptblocks，ifany，recordedintheview.D.ThecodewillrunabackupvalidatetopopulatetheRC_BACKUP_CORRUPTIONviewandthenrepaircorruptblocks，ifany，recordedintheview.

4.You enable block change tracking. You issue the following command: BACKUP INCREMENTAL LEVEL 0 DATABASE;The next day, you issue the following command:BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;Which statement about the use of the change tracking file is true?（）A. RMAN reads the block change tracking file only when it performs the incremental level 0 backup.B. RMAN reads the block change tracking file when it performs both incremental backups.C. RMAN reads the block change tracking file only when it performs the incremental level 1 backup.D. RMAN does not read the block change tracking file when it performs either incremental backup.

更多“A system administrator needs to backup datavg which contains a database that pre－allocates ”相关问题

  • 第1题：

    YouareusingtheBlockMediaRecoveryfeaturetorecovertheblocksthataremarkedcorruptsincethelastbackup.Whichviewwillyouquerytodisplayinformationaboutthedatablocksthataremarkedcorruptsincethelastbackup?()

    A.V$BACKUP_CORRUPTION

    B.V$COPY_CORRUPTION

    C.V$DATABASE_BLOCK_CORRUPTION

    D.RC_BACKUP_CORRUPTION


    参考答案：C

  • 第2题：

    You enabled an audit policy by issuing the following statements:SQL> AUDIT POLICY ORA_DATABASE_PARAMETER BY SCOTT;SQL> AUDIT POLICY ORA_DATABASE_PARAMETER BY SYS, SYSTEM;For which database users and for which executions is the audit policy now active? （）

    A. SYS, SYSTEM

    B. SCOTT

    C. Only for successful executions

    D. Only for failed executions

    E. Both successful and failed executions


    参考答案：A, E

  • 第3题：

    You are a network administrator for The network contains a Windows Server 2003 computer named Testking1.You need to install an application on Testking1. The installation will cause several changes to the registry. You plan to use the Backup utility to create a backup that will enable you to restore the registry. TestKing requirements for network management state that all backups must be performed during an eight-hour period at night. Because of this time constraint, you need to ensure that the backup can be recovered as quickly as possible.You need to create a backup that meets the requirements.What should you do?（）

    A. Create a backup of the system partition.

    B. Create a backup of the boot partition.

    C. Create a backup of the System State.

    D. Create an Automated System Recovery (ASR) backup.

    E. Create a backup of the Systemroot\System32\Config folder.


    参考答案：C

  • 第4题：

    You performed an incremental level 0 backup of a database:RMAN > BACKUP INCREMENTAL LEVEL 0 DATABASE;To enable block change tracking after the incremental level 0 backup, you issued this command:SQL > ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ‘ /mydir/rman_change_track.f’;To perform an incremental level 1 cumulative backup, you issued this command:RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;Which three statements are true?（）

    A. Backup change tracking will sometimes reduce I/O performed during cumulative incremental backups.

    B. The change tracking file must always be backed up when you perform a full database backup.

    C. Block change tracking will always reduce I/O performed during cumulative incremental backups.

    D. More than one database block may be read by an incremental backup for a change made to a single block.

    E. The incremental level 1 backup that immediately follows the enabling of block change tracking will not read the change tracking file to discover changed blocks.


    参考答案：B, C, E

  • 第5题：

    You wish to enable an audit policy for all database users, except SYS, SYSTEM, and SCOTT.You issue the following statements:SQL> AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SYS;SQL> AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SYSTEM;SQL> AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SCOTT;For which database users is the audit policy now active?（）

    A. All users except SYS

    B. All users except SCOTT

    C. All users except sys and SCOTT

    D. All users except sys, system, and SCOTT


    参考答案：B

  • 第6题：

    使用snmptuil.exe 可以查看代理的 MiB对象,下列文本框内oid部分是（ ）.C:\ Users\Administrator> snmptuil get 192.168.1.31 public.1.3.6.1.2.1.1.3.0Variable=system.sysUpTime.0Value=TimeTicks 1268830

    A.192.168.1.31
    B.1.3.6.1.2.1.1.3.0
    C.system.sysUpTime.0
    D.TimeTicks 1268803

    答案：B
    解析：
    C:\>snmputil get 192.168.1.31 public .1.3.6.1.2.1.1.3.0public .1.3.6.1.2.1.1.3.0是指的系统开机时间多长。OID（对象标识符），是SNMP代理提供的具有唯一标识的键值。MIB（管理信息基）提供数字化OID到可读文本的映射。所有完全验证OID都有 .iso.org.dod.internet.private 开始，数字表达为: .1.3.6.4. 。几乎所有的OID都会跟上企业（.1）和由IANA（互联网编号分配中心分配的）唯一的厂商标号。 OID的相对格式，从企业值开始，略过所有的隐含地址。因此，可以用相对地址 enterprises.netapp.netappl.raid.diskSUmmary.diskSpaceCount.0 来表示上述的OID，或者用数字格式 .1.789.6.4.8.0 .某些唯一键值，可用多个实例表示，这样所有的OID都以实例值结尾。因此可以看到大多数OID都是以一个 .0 结尾的。

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