Oracle 053 668-728译文版

 

QUESTION NO:668

Examine the output ofthe query that you executed to list the objects in the recycle bin:

 

You verified that notable named SALES_TAB exists in the schema. Then you executed the followingcommand to purge the objects inthe recycle bin:

SQL> PURGE TABLE sales_tab;

What would be theoutcome of this command?

A. All three tables in the recycle bin are purged

B. Only the table with the oldestDROPSCN is purged

C. The command returns an error because multiple entrieswith the same name exist in the recycle bin

D. Only the table with the latest DROPSCN is purged

 

 

QUESTION NO:669

View the Exhibit andexamine the resourceconsumption details for the current plan in use by the database instance.

Which two statements aretrue based on the output? (Choose two.)

Exhibit:

A. An attempt to start a new session by the user belongingto DSS_QUERIES fails with an error

B. A user belonging to DSS_QUERIES canlog in to a new session but the session will be queued

C. The CPU_WAIT_TIME column indicatesthe total time that sessions in the consumer group waited for the CPU due toresource management

D. The CPU_WAIT_TIME column indicates the total time thatsessions in the consumer group

waited for the CPU dueto resource management, I/O waits, and latch or enqueue contention

 

Explanation:

http://download.oracle.com/docs/cd/B28359_01/server.111/b28310/dbrm009.htm

V$RSRC_CONSUMER_GROUP

Use theV$RSRC_CONSUMER_GROUP view to monitor CPU usage and CPU waits. It provides

the cumulative amount ofCPU time consumed, cumulative amount of time waiting for CPU, and

cumulative number of CPUwaits by all sessions in each consumer group. It also provides a

number of other measureshelpful for tuning.

SQL> SELECT name,active_sessions, queue_length,

consumed_cpu_time,cpu_waits, cpu_wait_time

FROMv$rsrc_consumer_group;

 

QUESTION NO:670

Because of a logicalcorruption in your production database, you wanted to perform Tablespace  Point in Time Recovery (TSPITR). But beforeyou start the recovery, you queried the  TS_PITR_OBJECTS_TO_BE_DROPPEDview and realized thatthere are a large number of objects that would be dropped when you startthe recovery by using this method.

You want to preservethese objects. Which option must you use to perform TSPITR and preserve  the object?

A. Perform Export before TSPITR andImport after TSPITR

B. Move objects to another schema that has the sametablespace assigned

C. Perform Incomplete Recovery before TSPITR with the LogSequence Number (LSN)

D. Perform Incomplete Recovery before TSPITR with the SystemChange Number (SCN)

 

Explanation:

QUESTION NO:671

 

You are using a recoverycatalog to maintain Recovery Manager (RMAN) backup information for yourproduction database. You have registered your production database and areperforming regular backups. Because of a new requirement you have added a fewnew tablespaces to your production database and you want them to be included inbackups. Identify two options for

completing this task.(Choose two.)

 

A. Reregistering the target database in recovery catalog

B. Transporting the new tablespaces to the recovery catalogdatabase

C. Syncronizing the recovery catalogwith the target database control file

D. Performing a fresh backup of thetarget database to include the new data files in the catalogdatabase

 

Explanation:

QUESTION NO:672

You executed thefollowing command in the Recovery Manager (RMAN):

RMAN> REPORT NEED BACKUP days 3;

What is the output ofthis command?

A. A list of files that require a backup within 3 days

B. A list of files requiring more than3 days of archivelogs to apply

C. A list of files that RMAN recommends be backed up onlyonce in every three days, based on low volatility

D. A list of files for which a backup as already beenperformed in the last three days and which is required to be backed up againbased on the high number of transactions performed on them

 

QUESTION NO:673

 

Which two statements aretrue about the duplexingof the backups taken byRMAN? (Choose two.)

A. It's only supported for the backups performed on the tape

B. It is not supported for backupoperations that produce image copies

C. Duplex backups need a parallelism for the device to beequal to number of copies

D. Duplex backups can be performed toeither disk or tape, but cannot be performed on tape and  disk simultaneously

 

Explanation:

QUESTION NO:674

You are using RecoveryManager (RMAN) for backup and recovery operations with a recovery catalog. Youhave been taken database backups every evening. On November 15, 2007, at11:30AM, you were informed that the USER_DATA tablespace was accidentallydropped.

On investigation, you found that the tablespaceexisted until 11:00 AM, and important transactions were done after that.So you decided to performincomplete recovery until 11:00 AM. All the archive logs needed to performrecovery are intact完整无缺的. In NOMOUNT state you restored the control

file that hasinformation about the USER_DATA tablespace from the latest backup. Then you mountedthe database. Identify the next set of commands that are required to accomplishthe task?

你正在使用RMAN进行备份和恢复操作(用recoverycatalog)。你每天晚上进行数据库备份。2007.11.15，11：30上午，你消息灵通的（user_data表空间异常dropped）。

 

A. Option A

B. Option B

 

C. Option C

D. Option B

 

QUESTION NO:675

You create two resourceplans, one for data warehouse loading jobs at night and the other for applicationjobs at day time. You want the resource plans to activate automatically so thatthe resource allocation is optimum 最适宜的as desired渴望的 by the activity.

 

How would you achievethis?

A. Implement job classes

B. Implement Scheduler windows

C. Implement the mapping rule for the consumer groups

D. Set the SWITCH_TIME resource plan directive for both theresource plans

 

Explanation:

QUESTION NO:676

You want to schedule ajob to rebuild all indexes on the SALES table after the completion of a bulk loadoperation. The bulk load operation must also be a scheduled job that executesas soon as the first file that contains data arrives on the system.

 

How would you createthese jobs?

A. Create both jobs by using events raised by the scheduler

B. Create both jobs by using events raised by theapplication

C. Create a job to rebuild indexes by using events arised bythe application and then create another job to perform bulk load by usingevents raised by the scheduler

D. Create a job to rebuild indexes byusing events arised by the Scheduller and then create another job to performbulk load by using events raised by the application

 

Explanation:

QUESTION NO:677

View the Exhibits:Exhibit 1 and Exhibit 2

Both processes use anexisting job template PROG_1. The time taken by the jobs are recorded in theTEST_LOG table. It was observed that the job creation process in exhibit 1takes less time than in exhibit 2.

What is the reason forthis?

Exhibit:

 

A. It creates less metadata for jobs

B. It creates jobs temporarily in memory only

C. It writes the jobs metadata to disk in compressed format

D. It updates tables in SYSTEM tablespace instead ofcreating new tables

 

Explanation:

QUESTION NO:678

Which two statements aretrue regarding an Automatic Storage Management (ASM) instance? (Choose two.)关于ASM实例描述正确的两句是：

A. As ASM instance mounts an ASM control file

B. An ASM instance uses the ASMB process for rebalancing ofdisks within a disk group

C. Automatic Memory Management isenabled in an ASM instance even when the MEMORY_TARGET parameter is not setexplicitly即使memory_target参数没有明确的设置，自动内存管理也是启用的(在ASM实例)

D. An RDBMS instance gets connected toan ASM instance using ASMB as a foreground process when the database instanceis started  RDBMS实例连接到一个ASM实例使用ASMB作为前台进程（当数据库实例启动时）

 

 

QUESTION NO:679

 

The DB_BLOCK_CHECKINGinitialization parameter is set to OFF.

Which block checkingwould be performed?

Db_block_checking初始化参数设置为off，哪个blockchecking将被执行

A. The Oracle database will perform block checking for theindex blocks only

B. The Oracle database will not perform block checking forany of the data blocks

C. The Oracle database will perform block checking for thedefault permanent tablespace only

D. The Oracle database will perform block checking for thedata blocks in all user tablespaces

E. The Oracle database will performblock checking for the data blocks in the SYSTEM tablespace only。  Oracle数据库将执行块检查（只为SYSTEM表空间中的数据块）

 

Explanation:

QUESTION NO:680

Which two statements arecorrect about database transportation? (Choose two.)关于数据库传输正确的描述两句是：

A. The source and target platforms must be the same

B. Redo logs, control files and temp files are alsotransported？？？

C. The transported database must have the same databaseidentifier (DBID) as the source database and cannot be changed

D. The COMPATIBLE parameter must be setto 10.0.0.0 or higher and the database must be opened in readonly mode beforebeing transported .  COMPATIBLE参数必须设置为10.0.0.0或以上版本，数据库必须打开readonly模式在transported之前

E. Recovery Manager (RMAN) is used toconvert the necessary data files of the database if the target platform isdifferent and has different endian format。  RMAN用于去转换必须的数据文件（如果目标平台和原平台不同，且有不同的endian格式）

 

Explanation:

QUESTION NO:681

What is the effect ofincreasing the value of the ASM_POWER_LIMIT parameter?增加asm_poer_limit参数的值的大小的影响？

A. The number of DBWR processes increases

B. The number of ASMB processes increases

C. The number of DBWR_TO_SLAVES increases

D. The rebalancing operation in an ASMinstance completes more quickly, but can result in higher I/O overhead

 

Explanation:

QUESTION NO:682

You plan to useFlashback Drop feature to recover a dropped table SALES_EMP. No other table withthe same name exists in the schema.

You query RECYCLEBIN andfind multiple entries for the SALES_EMP table as follows:

You then issue thefollowing statement to recover the table:

SQL> FLASHBACK TABLEsales_emp TO BEFORE DROP;

What would be theoutcome of the precedent statement?

你计划去使用flashback drop 功能去恢复一个dropped表sales_emp。在模式下没有其他同名的表存在。你查询回收站，发现存在多个sales_emp表的条目：

你接着发起flashback table sales_emp to before drop；

这个语句的输出是什么？

A. It retrieves the latest version ofthe table from the recycle bin

B. It retrieves the oldest version of the table from therecycle bin

C. It retrieves the version of the table for which undo informationis available

D. It returns an error because the table name is notspecified as per the names in the OBJECT_NAME column

 

Explanation:

QUESTION NO:683

Observe the structure ofthe table employees:

The table contains 8475records.

One of the employeeswants to know the names of all employees of the company. For this, he fires thefollowing query:某员工想知道公司内所有雇员的名字。因此，发起一下查询：

SELECT * FROM EMPLOYEES ORDER BY emp_fname;

Since the operationperformed on executing the query cannot fit into memory, it requires disk spaceto complete the operation. Which of the following types of segments will Oracleallocate to complete the operation and to provide the required result?执行这个操作，查询不能纳入足够的内存，它要求磁盘空间去完成这个操作。Oracle将分配哪种类型的segment去完成这个操作和提供需要结果。

A. Rollback segment

B. Temporary segment

C. Data segment

D. Index segment

 

Explanation:

QUESTION NO:684

Using the LIST commandin Recovery Manager (RMAN), which two pieces of information in the RMANrepository can be listed? (Choose two.)使用RMAN下的list命令，在RMAN仓储中的信息的哪两个片（RMAN仓库中）可以被列举？

A. stored scripts in the recoverycatalog.恢复编目中的存储脚本

B. backups that can be deleted from disk.

C. backup sets and image copies are obsolete.

D. backups that do not have theAVAILABLE status in the RMAN repository.在RMAN仓储中的备份（没有available状态的）

 

Explanation:

QUESTION NO:685

 

A database is running inARCHIVELOG mode and regular backups are performed. A user receives thefollowing error message:

一个数据库运行在archivelog模式，规律备份执行。一个用户接收到下列错误消息：

 

Which is the recommendedsequence of operations you need to perform for the query successfully?你需要成功执行查询进行按照什么顺序进行操作？

 

A. Drop the affected tablespace, re-create the tablespace,restore the datafiles, and the tablespace.

B. Take the affected datafile offline (if not alreadyoffline), restore the damaged image of the datafile, and then bring it online.

C. Restart the database in MOUNT mode,restore the damaged datafile, recover the datafile and then open the databasewith resetlogs.

D. Put the database in RESTRICTED mode, restore all thedatafiles in the affected datafile and recover the tablespace, and then put thedatabase in normal operational mode.

 

Explanation:

QUESTION NO:686

You are working on a24X7 database. You want to design a backup strategy for your database that usesuser managed backups. You want to be able to perform all backups while thedatabase remains online.

你的数据库24*7.你想设计一个备份策略为你的数据库（使用用户管理备份）。你想能够执行所有的备份，当数据库保持online时。

Which statement aboutperforming user-managed backups in a 24x7 environment is true?

A. You must have change tracking enabled in your database

B. Your database must be running in NOARCHIVELOG mode

C. To back up a tablespace, it must bein backup mode

D. To back up a tablespace, it must first be taken offline

 

Explanation:

QUESTION NO:687

You are managing an ASMinstance. You previously issued the following statements:你正在管理一个ASM实例。你先前发起以下语句：

ALTER DISKGROUP dg1 DROP DISK disk2;

ALTER DISKGROUP dg1 DROP DISK disk3;

ALTER DISKGROUP dg1 DROP DISK disk5;

You want to cancel thedisk drops that are pending for the DG1 disk group.

Which statement shouldyou issue?你想取消磁盘drop（在dg1磁盘组即将发生的）；你应该发起哪个语句？

A. ALTER DISKGROUP dg1 UNDROP disk2, disk3, disk5;

B. ALTER DISKGROUP dg1 UNDROP;

C. ALTER DISKGROUP dg1 UNDROP DISKS;

D. You cannot cancel the pending disk drops.

 

Explanation:

QUESTION NO:688

You are maintaining theSALES database. You have added a new disk to a disk group. Automatic StorageManagement performs the rebalancing activity. You want to speed up therebalancing activity.

Which parameter shouldyou specify to control the speed of the rebalancing activity?你正在维护SALES数据库。你已经添加一个新的磁盘到磁盘组。ASM执行再平衡活动。你想加速再平衡活动。你应该指定哪个参数来控制再平衡活动的速度？

A. ASM_POWER_LIMIT

B. ASM_DISKSTRING

C. ASM_DISKGROUPS

D. INSTANCE_TYPE

 

Explanation:

 

QUESTION NO:689

You are performingincomplete recovery using RMAN. You execute the following RUN block:

RUN

{

SET UNTIL SCN 1107600;

RESTORE DATABASE;

RECOVER DATABASE;

}

Which statement is trueabout the result?你正在执行一个不完全恢复使用RMAN，你执行下列RUN块：

 

A. RMAN restores all datafiles from the most recent backupavailable since the failure and applies the redo logs necessary to recover thedatabase to SCN 1107600

B. RMAN restores all datafiles neededto restore the database through SCN 1107599 and applies the redo logs necessaryto recover the database through SCN 1107599.

RMAN还原所有的数据文件需要去还原数据库通过SCN 1107599；应用redo logs必须的去恢复数据库通过SCN 1107599

C. RMAN restores all datafiles and control files from themost recent backup

D. The RUN block fails because you did not specify an UNTILclause in your RECOVER DATABASE command

 

Explanation:

QUESTION NO:690

You issue the followingRMAN command to set a retention policy on a database:

你发起下列RMAN命令去设置一个保留策略

RMAN>CONFIGURE RETENTION POLICY TO REDUNDANCY2;

What will be the outcomeof issuing this command?

A. After two days, a backup will be marked obsolete

B. After two days, a backup will be deleted from the media

C. If the RMAN repository has records of two or more recentbackups of a file, then older backups will be deleted from the media.

D. If the RMAN repository has recordsof two or more recent backups of a file, then older backups will be markedobsolete.

 

Explanation:

QUESTION NO:691

Which statements aboutthe MEMORY_TARGET initialization parameter are true? (Choose all that apply.)关于memory_target初始化参数正确的是：

A.    MEMORY_TARGETcan be increased up to the value of MEMORY_MAX_TARGET, if MEMORY_MAX_TARGET isset to a value greater than zero

Memory_target可以增加到memory_max_target，如果memory_max_target设置大于0

B.   MEMORY_MAX_TARGET defaults to avalue of zero if MEMORY_TARGET is not set

如果memory_target未设置的话，memory_max_target默认值0

C.    MEMORY_TARGETrepresents the total amount of memory that can be allocated to SGA and PGAmemory structures.

Memory_target代表分配给SGA和PGA内存结构的总数。

D. MEMORY_TARGET is static and cannot bemodified without shutting down the instance

 

Explanation:

QUESTION NO:692

Which three componentsdoes the Scheduler use for managing tasks within the Oracle environment?(Choose three.)在oracle环境中，调度器使用哪些部件来管理任务？

A. a job

B. a program

C. a schedule

D. a PL/SQL procedure

 

Explanation:

 

QUESTION NO:693

You have enabled backupoptimization in RMAN. You issue the following RMAN command to configure a redundancy-basedretention policy:

CONFIGURE RETENTION POLICY TO REDUNDANCY 3;

Which statement is true?

你已经启用备份优化（在RMAN中）。你发起下列RMAN命令去配置冗余的保留策略。

A. The command fails because you cannot configure aredundancy-based retention policy when backup optimization is enabled

B. Backup optimization is performed,but RMAN considers the redundancy-based retention policy when it determineswhich datafiles should be backed up当它决定哪个数据文件应该备份时，RMAN考虑冗余的保留策略。

C. Backup optimization is permanently disabled

D. Backup optimization is temporarily disabled because aredundancy-based retention policy is specified

 

Explanation:

QUESTION NO:694

You issue the followingcommand on the RMAN prompt.

REPORT NEED BACKUP DAYS 5;

Which statement is trueabout executing this command?

你发起下列命令在RMAN中；reportneed backup day 5；

执行这个命令正确的语句是？

 

A. It will display a list of files that need incrementalbackup

B. It will display a list of files that need backup afterfive days

C. It will display a list of files that were backed up inthe last five days

D. It will display a list of files thathave not been backed up in the last five days

E. It will apply the current retention policy to determinethe files that need to be backed up

 

Explanation:

QUESTION NO:695

You perform a backupusing the following BACKUP command:

RMAN>BACKUP AS COMPRESSED BACKUPSET DATABASE;

Which statement is trueof this command?

你执行一个备份使用backup ascompressed backupset database;

这个命令中哪个是正确的？

A. A different procedure is required to restore a databasefrom compressed backups

B. The AS COMPRESSED clause of the BACKUP command providedby RMAN is used to create compressed backup sets and image copies.

C. Using this command to create backupsminimizes the bandwidth consumed使用这个命令去创建备份，最小化带宽消耗。

D. Using this command to create backups improves theperformance of the backup process

 

Explanation:

QUESTION NO:696

Which background processof a database instance, using Automatic Storage Management (ASM),connects as aforeground process into the ASM instance?

数据库实例的哪个后台进程，使用ASM作为前台进程（asm实例中的）

A. ASMB（负责数据库和实例的通信）

B. PMON

C. RBAL

D. SMON

 

QUESTION NO:697

You specify a nonzerovalue for the MEMORY_TARGET initialization parameter, but do not set thePGA_AGGREGATE_TARGET or the SGA_TARGET parameters. You restart your database instance.Which statement about the result is true?你指定一个非0值为memory_target初始化参数，但没有设置pga_aggregate_target或sga_target参数，你重启数据库实例后。哪个语句是正确的？

A. The database instance starts, and Oracle sets the defaultvalue of SGA_TARGET to the same value as SGA_MAX_SIZE.

B. The database instance starts, andOracle automatically tunes memory and allocates 60 percent to the SGA and 40percent to the PGA.

C. The database instance starts, but Automatic MemoryManagement is disabled.

D. The database instance will not start because you did notspecify the

PGA_AGGREGATE_TARGET orSGA_TARGET parameter.

 

 

QUESTION NO:698

Examine the exhibit toview the parameters set in your parameter file. (Click the Exhibit(s) button.)

You restart theinstance.

To what value will theMEMORY_MAX_TARGET parameter be set by default?

 

A. 120M

B. 320M

C. 480M

D. 600M

 

 

QUESTION NO:699

You are tuning RMAN tooptimize performance. You want tape I/O to be asynchronous when you performtape backups. Which action should you take?

你优化RMAN去优化性能。你想tape的IO为异步的，当执行那个磁带备份时。你应该执行哪些步骤？

A. Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE.

B. Set the BACKUP_TAPE_IO_SLAVESparameter to TRUE.设置backup_tape_io_slaves参数为true。

C. Use compression when performing tape backups.

D. Configure multiple SBT channels.

 

QUESTION NO:700

 

Your database is inARCHIVELOG mode. You have two online redo log groups, each of which containsone redo member. When you attempt to start the database, you receive thefollowing errors:

你的数据库处于archivelog模式下。你有2个在线重做日志组，每一个包含一个重做日志成员。当你尝试启动数据库时，你接收到下列错误信息：

ORA-00313: open failed for members of log group 1of thread 1

ORA-00312: online log 1 thread 1: 'D:\REDO01.LOG'

You discover that theonline redo log file of the current redo group is corrupted.

Which statement shouldyou use to resolve this issue?

你发现在线重做日志文件（当前重做日志组）损坏，你应该使用哪个语句来解决这个问题？

A. ALTER DATABASE DROP LOGFILE GROUP 1;

B. ALTER DATABASE CLEAR LOGFILE GROUP 1;

C. ALTER DATABASE CLEAR UNARCHIVEDLOGFILE GROUP 1;

D. ALTER DATABASE DROP LOGFILE MEMBER 'D:\REDO01.LOG';

 

 

QUESTION NO:701

 

Which statement aboutrecovering from the loss of a redo log group is true?

从一个重做日志组丢失中恢复，下列描述正确的是：

A. If the lost redo log group is ACTIVE, you should firstattempt to clear the log file.

B. If the lost redo log group is CURRENT, you must clear thelog file.

C. If the lost redo log group is ACTIVE, you must restore,perform cancel-based incomplete recovery, and open the database using theRESETLOGS option.

D. If the lost redo log group isCURRENT, you must restore, perform cancel-based incomplete recovery, and openthe database using the RESETLOGS option.

 

 

QUESTION NO:702

You have enabledresumable space allocation in your database by setting the

RESUMABLE_TIMEOUTparameter set to a nonzero value.

Which three statementsabout resumable space allocation are true? (Choose three.)你在你的数据库中已经启用了可恢复空间分配（通过设置resumable_timeout参数为非0值）。关于可恢复空间分配正确的描述是：

A. Even with resumable space allocationenabled for your database, you can disable resumable space allocation for asingle session.  即使你的数据库已经启用了可恢复空间分配，你也可以针对单个会话禁用可恢复空间分配。

B. A resumable statement is suspended only if an outof space error occurs.

C. When a resumable statement issuspended, the transaction that contains the statement is also suspended. 当一个可恢复语句暂停时，事务所包含的 语句也暂停

D. A resumable statement can only be suspended and resumedonce during the execution of the statement.

E. You can query the V$SESSION_WAITdynamic performance view to identify the statements that are suspended for asession.你可以查询v$session_wait动态性能视图去识别语句（会话中挂起的）

 

QUESTION NO:703

Which statement aboutusing RMAN stored scripts is true?

关于RMAN存储脚本描述正确的是：

A. To create and execute an RMAN storedscript, you must use a recovery catalog.创建和执行一个RMAN存储脚本，你必须使用一个恢复catalog。

B. When executing a stored script and a command fails, theremainder of the script is executed,and a message is written to the alert logfile.

C. RMAN stored scripts can always be executed against anytarget database that is registered in the recovery catalog.

D. When you execute a stored script, it always executesusing the persistent channel settings previously set with the CONFIGUREcommand.

 

QUESTION NO:704

Which type of backupcontains only the blocks that have changed since the last level 0 incrementalbackup?哪种类型的备份只包含修改的块，自最后一次0级别增量备份以来？

A. a cumulative level 1 backup

B. a differential level 1 backup

C. a full backup

D. a whole backup

 

QUESTION NO:705

你没有配置oracle管理文件（在你的数据库中）.你不想扫描整体的数据文件（每次增量备份被执行的时候）。你决定去启用块变化跟踪功能。应该使用哪个语句去启用块变化跟踪功能。

A. ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;

B. ALTER SYSTEM ENABLE BLOCK CHANGE TRACKINGUSING FILE ;

C. ALTERDATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ;

D. ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING;

 

 

QUESTION NO:706

你想备份你的100g数据库，在你远程的磁带设备上。你被要求去确保最小的网络带宽消耗，当传输备份到磁带上时。

你CPU的日常消耗在接近40%。你应该执行哪种类型的备份？

A. standard backup set

B. image copy

C. compressed backup

D. user-managed backup

 

QUESTION NO:707

You enable block changetracking. You issue the following command:

BACKUP INCREMENTAL LEVEL 0 DATABASE;

The next day, you issuethe following command:

BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;

Which statement aboutthe use of the change tracking file is true?

启用块变化跟踪。你发起下列命令：

Backup incrementallevel 0 database;

第二天，你发起下列命令：

Backup incrementallevel 1 cumulative database;

哪个语句是正确的，关于变化跟踪文件的使用？

A. RMAN reads the block change tracking file only when itperforms the incremental level 0 backup.

B. RMAN reads the block change tracking file when itperforms both incremental backups.

C. RMAN reads the block change trackingfile only when it performs the incremental level 1 backup. RMAN读块变化跟踪文件只有当它执行incremental level 1备份时。

D. RMAN does not read the block change tracking file when itperforms either incremental backup.

 

QUESTION NO:708

Your database is runningin ARCHIVELOG mode, and the database is open. You execute an RMAN backup andspecify the KEEP clause.

Which components arebacked up when this option is specified?

你的数据库运行在归档模式下，数据库打开。你执行RMAN备份，指定KEEP条件。当这个选项指定时，哪个部件被备份？

A. only the control file, the current SPFILE, and data files

B. only the current SPFILE and data files if autobackup isdisabled

C. only the data files and the archived redo logs

D. the control file, current SPFILEfile, data files, and archived redo logs

 

QUESTION NO:709

You want to use RMAN tocreate compressed backups.

Which statement is trueabout the compression algorithms that RMAN can use?

你想使用RMAN去创建压缩备份。哪个语句是正确的，关于RMAN使用的压缩算法。

A. The BZIP2 compression algorithmconsumes more CPU resources than the ZLIB compression algorithm.   BZIP2压缩算法花费更多的CPU资源比ZLIB压缩算法。

B. The ZLIB compression algorithm consumes more CPUresources than the BZIP2 compression algorithm.

C. The ZLIB compression algorithm provides maximumcompression and produces smaller backups than the BZIP2 compression algorithm.

D. Only the BZIP2 compression algorithm can be used to makecompressed backups to disk.

 

QUESTION NO:710

You discover that yourRecycle Bin contains two tables with the same name, MY_TABLE. You also have atable named MY_TABLE in your schema.

You execute thefollowing statement:

FLASHBACK TABLEmy_table TO BEFORE DROP RENAME TO my_table2;

What will be the resultof executing this statement?

你发现你的回收站包含2个表（用相同的名字my_table）.你也有一个表my_table在你的模式下。你执行:

Flashback table my_tableto before drop rename to my_table2;

 

A. One of the tables is recovered from the Recycle Bin usinga First In First Out (FIFO) approach.

B. One of the tables is recovered fromthe Recycle Bin using a Last In First Out (LIFO) approach.

C. Both the tables are recovered from the Recycle Bin withone table renamed to MY_TABLE2 and the other to a system-generated name.

D. None of the tables are recovered from the Recycle Bin,and the statement returns an error.

 

QUESTION NO:711

You want to disableresumable space allocation for all sessions.

Which value should beassigned to the RESUMABLE_TIMEOUT parameter to disable resumable spaceallocation for all sessions?

你想禁用可恢复空间分配为所有的会话。哪个值应该指向resumable_timeout参数去禁用resumable空间分配为所有的会话。

A. 0

B. 10

C. 100

D. NULL

 

 

QUESTION NO:712

You want to enableresumable space allocation at the instance level.

Which two actions wouldenable resumable space allocation at the instance level? (Choose two.)你想在实例级别启用可恢复空间分配。哪两个actions将启用可恢复空间分配（在实例级别）

A. issuing the ALTER SYSTEM ENABLE RESUMABLE; statement

B. issuing the ALTER SESSION ENABLE RESUMABLE; statement

C. modifying the RESUMABLE_TIMEOUTinitialization parameter to a nonzero value修改resumable_timeout初始化参数到一个非0值。

D. issuing the ALTER SYSTEM SETRESUMABLE_TIMEOUT=; statement  发起alter system set resumable_timeout=非0值。

 

 

QUESTION NO:713

Your database is runningin ARCHIVELOG mode. You are performing a user-managed backup of the DATA1 tablespace.You place the DATA1 tablespace in backup mode by issuing the followingstatement:

ALTER TABLESPACE data1BEGIN BACKUP;

While you are performingthe backup, an error occurs that causes the instance to terminate abnormally.Which statement about the DATA1 tablespace is true?你的数据库运行在archivelog模式。你正在执行一个用户管理的备份（data1表空间）。你置于data1表空间处于备份模式，通过发起下列命令：

Alter tablespace data1begin backup;

当你正在执行备份时，错误发生，引起实例异常中断。关于data1表空间描述正确的是：

A. The DATA1 tablespace is automatically taken out of backupmode when the instance aborts.

B. If you restart the database, the DATA1 tablespace will beautomatically taken out of backup mode when the database is opened.

C. If you restart the database, the DATA1 tablespace will beautomatically taken out of backup mode when the database is mounted.

D. If you restart the database, the database will not beopened.

 

QUESTION NO:714

For which two situationswould you use functionality provided by the Resource Manager? (Choose two.)下列哪两种场景下，你可以使用由资源管理器提供的功能？

A. setting idle timeout limits onresource plans在资源计划上设置空闲超时限制

B. saving storage space by using compressed backup sets

C. creating jobs that will run automatically at a scheduledtime

D. assigning priorities to jobs tomanage access to system resources确定jobs，去管理访问系统资源的优先级

E. creating alerts to perform notification when tablespacesare low on available space resources

 

 

QUESTION NO:715

 

Which statement aboutAutomatic Memory Management with Oracle 11g is true?关于11g自动内存管理正确的描述是：

A. You cannot specify MEMORY_TARGET if you explicitlyspecify SGA_TARGET or PGA_AGGREGATE_TARGET values that are greater than zero inyour parameter file.

B. Oracle can reallocate memory betweenthe SGA and PGA automatically as needed.

C. To use Automatic Memory Management, you must explicitlyset both the MEMORY_TARGET and MEMORY_MAX_TARGET parameters in your parameterfile.

D. You can set the MEMORY_TARGET parameter to a maximumvalue of the current SGA size plus the current PGA size.

 

Explanation:

QUESTION NO:716

Which tuning toolrecommends how to optimize materialized views so that these views can take advantage of thegeneral query rewrite feature?哪个调优工具推荐怎样优化物化视图，因此这些视图可以利用普通的查询重写功能。

A. Segment Advisor

B. SQL Access Advisor

C. Undo Advisor

D. SQL Tuning Advisor

 

QUESTION NO:717

(Choose all that  apply.)在11g中，sql访问建议器产生什么样的推荐。

A. partitioning recommendations分区推荐

B. statistics collection recommendations

C. index creation recommendations索引创建推荐

D. materialized view recommendations物化视图推荐

E. materialized view logrecommendations物化视图日志推荐

 

在oracle11g中，sql访问建议器可以产生分区推荐，索引创建推荐，物化视图推荐，物化视图日志推荐。SQL访问建议器是一个调优工具（提供关于物化视图调优，索引和物化视图日志。）----

SQL访问建议器不能产生统计收集推荐，这个任务由SQL调优建议器执行。

 

QUESTION NO:718

你有一些巨大的表，用户频繁访问。基于这边表的查询性能的提高，哪个建议器将推荐索引。

A. The Automatic Memory Manager (AMM)

B. The SQL Tuning Advisor

C. The Segment Advisor

D. The SQL Access Advisor

 

Explanation:SQL访问建议器分析所有的SQL运行（在一个给定的时间周期内，推荐索引和物化视图区提升数据库的整体性能）

QUESTION NO:719

Oracle建议框架中的哪个建议器将分析一个单个sql语句和性能改进的推荐方案

A. SQL Repair Advisor

B. SQL Optimizer

C. SQL Access Advisor

D. SQL Tuning Advisor

 

Answer option D iscorrect.

The SQL Tuning Advisor takes one or more SQL statementsand performs an analysis to determine what can be done to improve theperformance of the SQL statement(s).Recommendations include rewriting the SQLstatement, adding indexes, or even changing initialization parameters or memorycomponent sizes such as the SGA size or buffer cache.

Sql调优建议器获得一个或多个sql语句，执行一个分析，去判断做什么去改进sql语句的性能。推荐方案包括重写SQL语句，添加索引，或改变初始化参数，或内存部件大小，例如SGA大小或buffer cache.

The SQL Tuning Advisoris accessed via tools such as Top SQL, the Automatic SQL Tuning Advisor, or theTop Sessions interface from within EM. In contrast, the SQL Access Advisortakes a broader view of SQL tuning. It considers a larger subset of SQLstatements, such as all SQL statements run within a specified time period orfrom a SQL Tuning Set (STS). The SQL Access advisor may recommend additionalindexes as well as materialized views to improve performance.

The SQL Repair Advisoranalyzes a SQL statement that causes a critical error and records the resultsin the Automatic Diagnostic Repository (ADR). It may recommend a patch to fixthe problem, or may provide an alternate execution plan to avoid causing anerror in the future. Other advisors within the advisory framework includememory advisors that monitor usage of the SGA and PGA and recommend optimal settings for these memory structuresincluding the substructures within them, such as the library cache and the largepool. Answer option A is incorrect. The SQL Repair Advisor only makesrecommendations for SQL statements that cause a critical error in the ADR.Answer option B is incorrect. There is no such advisor such as the SQL

Optimizer, although theOracle optimizer uses statistics to determine the best execution plan.

Answer option C isincorrect. The SQL Access Advisor analyzes groups of SQL statements that runduring the same time period, not one or two SQL statements in isolation as theSQL Tuning Advisor.

 

QUESTION NO:720

 

Which statement is trueabout a running session that belongs to the online transaction processing (OLTP)group?哪个语句是正确的，关于运行会话属于在线事务处理组？

A. It permanently switches to the low_group consumer groupif the session exceeds 10,000 I/O requests or 2,500 MB of data transfer.

B. It performs the first 10000 I/O requests or 2,500 MB ofdata transfer in the LOW-GROUP consumer group, and then switches to theoriginal group.

C. It switches to the LOW_GROUP consumer group if thesession exceeds 10000 I/O requests or 2500 MB of data transfer and returns tothe original group after the operation.

D. It switches to the LOW_GROUPconsumer group if the session exceeds 10000 I/O requests or 2500 MB of datatransfer for queries, but not for data manipulation language (DML) operations.如果会话超过10000请求，2500mb数据传输，但not为DML操作。

 

QUESTION NO:721

You want the ability torecovery any time within the last seven days and therefore you configured therecovery window retention policy using the command:你想具有恢复到最后7天任何时间段的能力。于是你配置recovery窗口保留策略，使用以下命令：

RMAN> CONFIGURERETENTIOH POLICY TO RKCOVFRY WINDOW OF 7 DAYS;

After configuring therecovery window, you performed the database backup

as follows:在配置恢复窗口后，你执行数据库备份如下：

A. Backup RB1 at log sequence number 12871 on 5th Jan

B. Backup RB2 at log sequence number 15622 on 12th Jan

C. Backup RB3 at log sequence 16721 on 15th Jan

D. On 20th Jan when thelog sequence number was 18112 yourealize that there Is a need to a point in time at the beginning of therecovery window. You have all an hived积累的，储备的，蜂箱的 redo log files to date.

 

Which components areneeded for successful and most efficient recovery.哪个部件是需要的（为了能成功和更多有效率的恢复）

A. The backup RB3 and the currentonline redo log files

B. the backup RB2 and the archived redo log files after thelog sequence number 15622

C. Backup R81 and the archived redo log hies after the logsequence number 12871

D. The backup RB3 and the archived redo log files after thelog sequence number 16721

 

QUESTION NO:723

(Choose three) 一个job链条过程可以包含哪3个元素

A. an event

B. a schedule调度器

C. a program

D. another chain另一链条

E. a lightweight job一个轻量级job

 

Explanation:

QUESTION NO:724

(Choose two.)

你正在使用flash recovery area（11.2）去存储你数据库中相关文件的备份。你认识到FRA快速满河溢出。你的数据库闪回恢复区是很少的，没有太多的空间在磁盘上。主动的，你使用哪两个选项去使闪回恢复有更多的空间有效。

 

A. Change the RMAN archived log deletion policy.

B. Use the RMAN CROSSCHECK command toreclaim the archived log space.使用RMAN CROSSCHECK命令去清空归档日志空间。

C. Change the RMAN retention policy to retain backups for ashorter period of time.

D. Use OS command to move files from theflash recovery area to some other location使用OS命令移动文件从闪回区到 其他位置。

 

QUESTION NO:725

数据库处于archivelog模式。数据库需要24*7运行。你想执行用户管理的备份为了完成这个任务，你发起以下命令：

SQL> ALTER TABLESPACE hi_data BEGIN BACKUP;

(Choose two.)这个场景下那两句是正确的。

A.  No transaction on the tablespace is allowed butyou can perform queries.

B. The tablespace will automatically come out of backup modewhen the file copy is complete.

C. The checkpoint change number isfrozen in headers of the data files until the file is removed from backup mode.

D. The database writes the before image of an entire blockto the redo stream before modifying block tor the first time.

 

QUESTION NO:726

在你的生产库里，你：

正在使用RMAN(用一个 recovery catalog)去执行备份操作（有规律的间隔）

设置控制文件autobackup为on

正在维护数据库文件的image copy。

你丢失了spfile和控制文件。还原spfile之前；哪个选项必须被考虑（使用控制文件自动备份）

C. using the RMAN SWITCH command

 

 

QUESTION NO:727

Examine the followingset of RMAN commands:

RMAN> CONFIGURECHANNEL dc1 DEVICE TYPE DISKFORMAT • /u02 /backup/ %U' ,"

RMAN> RUN

(

ALLOCATE CHANNEL Chi DEVICE TYPE DISK;

EXECUTE SCRIPT full_backup;

)

Which statement is truewhen the RMAN RUN block Is executed?

当RMAN运行块执行时，哪个语句是正确的？

A. The execution of the script fails because multiplechannels cannot coexist.

B. The script is executed and both the channels are used forthe script execution.

C. The new channel, CHI, is Ignored because a channel hasbeen configured already.

D. ration parameter DCI is overriddenbecause a new channel is allocated in RMAN RUN block.  配给量参数DCI被否决，因为 一个新的通道被分配在RUN块中。

 

QUESTION NO:728

 

What happens when yourun the SQL Tuning Advisor with limited scope?

当你用有限的范围去运行SQL调优建议器时，什么将发生 ？

A. Access path analysis is not performed for SQL statements.

B. SQL structure analysis is notperformed for SQL statements.  针对SQL语句的SQL结构分析将不执行

C. SQL Profile recommendations are not generated for SQLstatements.

D. Staleness and absence of statistics are not checked forthe objects in the SQL Tuning Advisor.

 

QUESTION NO:729

你执行下列RMAN命令，按以下顺序

BACKUP  VALIDATE  DATABAE

RECOVER  CORRUPTION LIST;

(Choose two.)这些命令要执行哪两个任务？

A. Repair the corrupted blocks. If any. In the backupcreated.

B. Populate V$COPY_CORRUPTION with names offiles that have corrupted blocks-已经有坏块的文件的名字就放到v$copy_corruption.

C. Back up the database after checkingwhether array of the files have corrupted blocks.在检查完文件是否有坏块之后备份数据库。

D. Discover any corrupt blocks that are viewable with theVSDATABASE_BI-OCK_CORBUPTION view.

E. Repair all corrupted blocks that have been logged in theVSDATABASE_BLOCK_CORRUPTION