Oracle 053 1-124译文版

阅读053考试指南,你能知道因果!

比较菜的译文,请大家谅解!

声明整个题库至少有10题左右的答案出入。


你正在管理一个oracle11g ASM实例(有3个硬盘在磁盘组,用ASM兼容性属性设置为11.1.0;冗余设置为high)。磁盘组中某个磁盘变成unavailable,因为电源故障。这种场景下,那个语句描述是正确的:

B. The ASM tracks theextents that are modified during the outaASM故障期间跟踪修改的extents,不会迁移区间到有效盘上。

D. The diskautomatically goes offline.该磁盘自动offline,但不会dropped

 

 

Explanation:

QUESTION NO:7(Jesse)

 (Choose three.)关于sql 计划基线正确的3个语句:

A. The plans generated for every SQL statement are stored inthe SQL plan baseline  by  default.

B. The plans can bemanually loaded to the SQL plan baseline.计划可以手工导入到SQL计划基线中

C. The plan baselines are stored temporarily in the memoryas long as the database instance is running.

D. The plans in theSQL plan baseline are verified and accepted plans. SQL计划基线中的计划是被验证和接受的计划

E. For the SQL planbaselines to be accessible to the optimizer, the SYSAUX tablespace must be online.

对于SQL计划基线可以访问相对于优化器来说,SYSAUX表空间必须在线。

 

—问题?每条SQL语句产生的计划存储在哪里?

 

 

Explanation:

QUESTION NO:11 (Jesse)

 (Choose three.)关于persistentlightweight jobs永久性轻量级工作描述正确的3句:

A. Persistent lightweight jobs modify several tables in thedata dictionary to generate a lot of redo.

B. The user cannotset privileges on persistent lightweight jobs.用户不能在永久性轻量级jobs上设置权限。

C. Persistentlightweight jobs are useful when users need to create a large number of jobs ina short time.当用户在短时间内需要创建的大量的job时永久性轻量级job是有效的。

D. Persistent lightweight jobs are useful when users need tocreate a small number of jobs that run infrequently.

E. The use of atemplate is mandatory to create persistent lightweight jobs.创建永久性轻量级job强制使用模板。

 

 

Explanation:

QUESTION NO:13 (Jesse)

关于虚拟专用编目virtual privatecatalogs正确的是:

A. A virtual private catalog owner can create a local storedscript, and have read/write access to a global stored script.一个虚拟专用编目所有者可以创建一个本地存储脚本,有读写访问全局存储脚本权限X?

B. The virtual private catalog owner cannot create andmodify the stored scripts.虚拟专用编目所有者不能创建和修改存储脚本

C. The set of views and synonyms that make up the virtualprivate catalog is stored in the schema of the RMAN recovery catalog owner.

D. To perform most ofthe RMAN operations, the virtual catalog owner must have the SYSDBA or SYSOPERprivilege on the target database.执行大多数RMAN操作,虚拟编目所有者必须有SYSDBASYSOPER权限(在目标数据库上)

 

 

 

Explanation:

QUESTION NO:16

 (Choose two.)哪两个被ASM元数据备份和还原功能所使用:

C. It can be used togather information about a preexisting ASM disk group with disk paths, disk name,failure groups, attributes, templates, and alias directory structure.用于去收集关于先前存在的ASM磁盘组(磁盘路径,磁盘名,失败组,属性,模板和别名结构等)的信息

D. It can be used tore-create the ASM disk group with its attributes.它可以用去重建ASM磁盘组(用它的属性)。

 和数据无关

 

Explanation:

QUESTION NO:18 问题什么是autotask framework  (Jesse)

哪个原因可以将Automatic  sqltuning作为autotask架构下的组成部分来使用

B. SQL statementsbased on the AWR top SQL identification 基于AWR top sql鉴定中的sql语句

 

Explanation:

QUESTION NO:19

当执行FRA备份时,你注意到其中某个归档重做日志文件已经丢失。你有多个归档重做日志文件存储路径。它在FRA备份上的影响是:

D. The backupsucceeds because it fails over to one of the alternative非正常的,二选一的 archived redo logdestinations.备份成功因为它有二选一的归档重做日志目标。

 

Explanation:

QUESTION NO:20 (Jesse)

 (Choose all that apply.)你正在管理一个oracle11g实例和oracle10的实例(在相同的机器上)。两个实例都使用ASM实例作为存储。在个场景下关于ASM磁盘组兼容性属性描述正确的是:

A. Thedatabase-compatibility version settings for each instance must begreaterthan or equal to the RDBMS compatibility of all ASM disk groups used bythat database instances.每一个实例的数据库兼容性版本设置必须大于或等于被数据库实例所使用的所有的ASM磁盘组的RDBMS的兼容性。

B. RDBMScompatibility and the database version determines whether a database instancecan mount the ASM disk group.RDBMS兼容性和数据库版本决定了一个数据库实例是否可以mount一个ASM磁盘组。

C. The RDBMS compatibility settings for a disk group controlthe format of data structures for ASM metadata on the disk. 兼容性设置和元数据的数据结构格式无关

D. ASM compatibilitycontrols which features for the ASM will be enabled.ASM的兼容性控制功能将启用

 

Explanation:

QUESTION NO:21 (Jesse)

Choose three.) Autotask BackgroundProcess(ABP)的功能描述正确的是:

A. It creates jobs without considering the prioritiesassociated with them.

B. It translatestasks into jobs for execution by the scheduler.它把任务转换成通过调度器执行的job

C. It determines thelist of jobs that must be created for each maintenance window.它决定了为每一个维护窗口所创建的job的列表

D. It is spawned引起,酿成 by the MMONbackground process at the start of(开始起初) the maintenancewindow.在维护窗口开始之初由MMON后台进程来引起

E. It maintains a repository in the SYSTEM tablespace tostore the history of the execution of all tasks.

 问题:所有任务的执行历史存储在哪个表空间?

Explanation:

QUESTION NO:22

(Choose all that apply.)在oracle11g的故障诊断架构中的问题和事件的内容描述正确的是:

A. Only the incident metadata and dumps are stored in theAutomatic Diagnostic Repository (ADR).

B. The problem key is the same as the incident number.

C. The database sendsan incident alert to the Oracle Enterprise Manager Database Home page.数据库发送一个事件警告到oracle EM数据库home页面

D. Every problem hasa problem key, which is a text string that describes the problem.每个问题有一个问题key,描述问题的文本字符串

E. The database makesan entry into the alert log file when problems and incidents occur.数据库写个entryalert日志文件,当问题和事件发生的时候。

 问题:ADR中存储的是什么?

 

Explanation:

QUESTION NO:23

(Choosetwo.)来自sql access advisor的推荐方案,描述正确的两句是:

A. It cannot generate recommendations that support multipleworkload queries.

B. It can recommendpartitioning on tables provided that the workloads have some predicates and  joins on the columns of the NUMBER or DATEtype.他可以推荐表分区(表的负载有一些断定和连接在number或日期类型的列上)

C. It can recommendpartitioning only on tables that have at least 10,000 rows.它可以推荐分区表至少有1W行上的表。

D. It can recommend only B-tree indexes and not bitmap orfunction-based indexes.

问题:

Sql accessadvisor推荐方案都有哪些??

 

 

Explanation:

QUESTION NO:25

 (Choose all that apply.) RMAN命令中的change failure的意义:

A. It is used to changefailure priority only for HIGH or LOW priorities.用于去改变故障的优先级(只为high或者low优先级)

D. It is used toexplicitly close the open failures.用于去明确的关闭打开的失败

 

Explanation:

QUESTION NO:26

(Choose allthat apply.)通过使用em workbench support创建的事件包文件的描述正确的是:

A. You can add orremove the trace files to the package.你可以添加或删除trace文件到包

B. You can create theincremental incident package ZIP file for new or modified diagnostic informationfor the incident package already created.你可以创建增量事件包zip文件(为新的或修改的诊断信息)

C. You can add SQL testcases to the incident package.你可以添加sql测试cases到事件包。

D. You cannot create an incremental incident package whenthe physical files are purged rom the ADR.当物理文件从ADR中清空时,你不能创建一个增量事件包

 

 

 

Explanation:

QUESTION NO:29

(Choose all that apply.)你正在管理oracle11g的数据库用ASM存储。Asm磁盘组有compatible asm属性设置为11.1,在ASM磁盘组中关于extent管理和AU描述正确的是:

A. The au_size diskgroup attribute determines the size of allocation units in the disk group. Au_size磁盘组属性决定了磁盘组中的au的大小

B. The allocation unit sizemayvary but the extent size is fixed.X 

C. The allocation unit size and extent size are fixed forall the disks in a disk group and cannot be changed.

D. Extent managementis completely automated.区间管理完全是自动的

 

AU大小和区间大小都是可变的?

 

Explanation:

QUESTION NO:30

 (Choose all that apply.) 在你的数据库中执行闪回事务flashback transaction的先决条件是:

A. Undo retention guarantee for the database must beconfigured.X

B. Supplemental追加 log must beenabled for the primary key.针对pk追加日志启用

C. Supplemental logmust be enabled.追加日志启用

D. Execute permissionon the DBMS_FLASHBACK package must be granted to the user. Exec dbms_flashback包的权限必须授予给用户

 

另外:grant select any transaction to user

 

 

 

Explanation:

QUESTION NO:35

admin_emp表有列empno,ename,deptno,sal。它有一个物化视图emp_mv,有一个物化日志和ename_index索引在ename列。你需要执行一个在线表重定义在admin_emp表,移动它从相同架构下TBS1表空间到TBS2表空间。当你在表上执行在线重定义时,依赖对象的必需的行为?

A. The materializedview should have a complete refresh performed after the online table redefinitionis completed. 在线表重定义完成以后,物化视图应该有一个完整的刷新恢复需要被执行。

 

Explanation:

QUESTION NO:36

你发起下列命令去mount data磁盘组(在限制模式下)

ALTER DISKGROUP data MOUNT RESTRICT;

这个命令的含义

D. The client RDBMSinstance cannot access the files in the disk group.

 客户端RDBMS实例不能访问磁盘组的文件。

 

Explanation:

QUESTION NO:37(Jesse)(女还捕,重拦客)

你的公司想升级当前的生产库到RAC环境。迁移到RAC环境之前去执行测试,你在生产库上执行工作负载捕获去记录最高的工作负载。你设置测试RAC数据库,想去回放记录的工作负载。注意下面步骤你需要回放数据库负载的。

1)    Preprocess the captured workload.预处理捕获工作负载

4) Restorethe test database to the point when the capture started.还原测试数据库到捕获开始点

5) Remapconnections.   remap连接

3) Set upthe Replay Clients. 设置replay客户端

 

2) Restartthe database in RESTRICTED mode. 重启数据库到restricted模式

预处理----还原测试库到捕获开始点----remap连接---设置replay客户端

 

Explanation:

QUESTION NO:38

你是appdb数据库的DBA。数据库有一个默认的flashback data archive fla1创建在上面。你发起下列命令去drop flashback archive。

FLA1:

DROP FLASHBACK ARCHIVE fla1;这个命令的影响:

D. The Flashback DataArchive and historical data are dropped.Flashback数据归档和历史数据被dropped

 

QUESTION NO:39

(Choosetwo.) 执行工作负载捕获和回放所需的先决条件?

C. The database onwhich the workload is replayed has to be a restore of the original database to aspecific SCN.数据库工作负载被回放,不得不还原到原始数据库到一个特定的SCN.

D. setting up thedirectory to capture the workload 设置目录去捕获工作负载。

 

Explanation:

QUESTION NO:40

(Choose two.)关于oracle 11g健康监视检查正确的两句:

A. Health Monitorchecks can be used to scan the contents of the redo log and archive logs for accessibilityand corruption.健康监视检查用于去扫描重做日志和归档日志的内容(访问性和破坏性)

B. Health Monitorchecks can be used to verify the integrity of database files and reportfailures if these files are inaccessible, corrupt or inconsistent.健康监视检查用于去验证数据库文件的完整性和报告失效(如果文件不可访问,破坏或不一致)

 

Explanation:

QUESTION NO:41

一个用户登陆到HR架构下,发起以下命令:

SQL>CREATE TABLE emp

(empnoNUMBER(3),

enameVARCHAR2(20),

salNUMBER(8,2));

SQL>INSERT INTO emp(empno,ename) VALUES(1,'JAMES');

此时At this moment,,第二个用户也登陆到HR模式下,发起下列命令:

SQL>ALTER TABLE emp MODIFY sal NUMBER(10,2);

这个场景下发生什么?

C. The second user'ssession waits for a time period before producing the resource busy error. 第二个用户会话等待一个时间周期(产生资源忙错误之前)

 

Explanation:

QUESTION NO:42

 (Choose all that apply.)在哪个场景下,ASM元数据备份帮助你恢复磁盘组中的ASM磁盘。

A. when one or morefile directory paths are accidentally deleted from an ASM disk group 当一个或多个文件目录路径被意外删除(从一个ASM磁盘组)。

B. when one of the disks in a disk group is accidentalyunplugged当磁盘组中的一个磁盘意外拔掉

C. when the data file on an ASM disk group gets corrupted磁盘组中的数据文件损坏

D. when one or moredisks in an ASM disk group are lost在ASM磁盘组中的一个或多个磁盘丢失了。

 

Explanation:

QUESTION NO:43

 (Choose two.)哪两个先决条件去启用flashback data archive?

A. Database must be running in archivelog mode.数据库处于归档模式

B. Automatic undomanagement must be enabled.自动undo管理必须启用

C. Undo retention guarantee must be enabled.

D. The tablespace onwhich the Flashback Data Archive is created must be managed with AutomaticSegment Space Management (ASSM).表空间中的闪回数据归档被创建必须被ASSM管理。

 

Explanation:

http://www.oracle.com/technetwork/database/features/storage/total-recall-whitepaper-171749.pdf?ssSourceSiteId=ocomenOracle White Paper- Oracle Total Recall with Oracle Database 11g

Release 2,Page 7

FlashbackData Archive Requirements

1. FlashbackData Archive tablespaces must be managed with automatic segment space management(ASSM).

2. AutomaticUndo Management must be enabled.

http://www.dba-oracle.com/t_11g_new_enabling_fdba.htm

There are anumber of restrictions for flashback archives:flashback archive限制:

- Thetablespaces used for a flashback archive must use local extent managementandautomatic segment space management.用于flashback归档的表空间必须使用本地区间管理和自动段空间管理。

- Thedatabase must use automatic undo management. 数据库必须使用自动undo管理。

 

 

Explanation:

QUESTION NO:45

你需要执行一个在线表重定义(在一个已存在的sales表,分区到2个表空间TBS1和TBS2).SALES表有一个物化视图,物化日志,索引,完整性约束和触发器(在precedes条件中)。当你执行在线表重定义时,哪个行为需要在你依赖的对象上?

A. The dependentmaterialized view should have a complete refresh performed after the online tableredefinition process.关联的物化视图应该有一个完全的刷新的执行(在在线表定义进程之后)

 

Explanation:

QUESTION NO:46

你想针对users表空间进行备份。有一个单独的数据文件900mb,你有一个磁带驱动器300mb。Sbt通道被配置。你发起下列命令:

RMAN> BACKUP SECTION SIZE 300M TABLESPACEusers;

 (Choose two.)上面命令执行正确的两句是:

B. The backup piecesize will be limited to 300 MB.备份片大小将限制在300mb

C. The operation isaccomplished using the default channel available.使用默认channel有效,操作被完成

 

Explanation:

QUESTION NO:47

Choose all that apply.)你重新安装oracle11g,哪个语句是正确的,关于这个数据库中默认的审计设置?

C. The audit trail isstored in the database.审计索引存储在数据库中

E. Auditing isenabled for certain privileges related to database security.针对当前权限与数据安全相关的审计是启用的

 

Explanation:

QUESTION NO:48

哪个依赖对象将失效甚至表重定义也不被影响?

B. triggers

 

QUESTION NO:50

你发起下列命令去mount data磁盘组到restrict模式。 Alter diskgroup  data mount restrict;

D. The client RDBMSinstance cannot access the files in the disk group.客户端RDBMS实例不能访问磁盘组中的文件。

 

 

Explanation:

QUESTION NO:62

View theExhibit to examine the output produced by the following query atthree different times sincethe database instance started and hasundergone workloads of different capacities:

 

SQL>SELECT substr(component, 0, 10) COMP, current_size CS,

user_specified_sizeUS

FROMv$memory_dynamic_components

WHEREcurrent_size!=0;

What do you infer from this?你从中获取什么信息?

D. The databaseinstance has the MEMORY_TARGET value set to a nonzero value. 数据库实例的memory_target值设置为非0值。

 

Explanation:

QUESTION NO:63

View theExhibit to observe the error.

You receivethis error regularly and have to shut down the database instance to overcomethe error. What can the solution be to reduce the chance of this error infuture, when implemented?你有规律的接收这个错误,不得不关闭数据库实例去解决错误。

D. automatic memorymanagement

 

Explanation:

QUESTION NO:64

哪个语句是正确的,关于事件状态描述?

D. The data collectionfor the incident is complete and the incident can be packaged and sent to OracleSupport.事件的数据收集是完成的,时间可以被打包和发送到oraclesupport

 

Explanation:

QUESTION NO:65----执行计划,好好看看

View theExhibit exhibit1.

优化器可以识别8行代替29行,表中的实际行数.你做什么才能使优化器检测正确的选择?

A. Change the STALE_PERCENT value for the CUSTOMERS_OBEtable.

B. Set the STATISTICS_LEVEL parameter to TYPICAL.

C. Create extendedstatistics for the CUST_STATE_PROVINCE and CUSTOMERS_OBE columns.cust_state_provincecustomer_obe列创建扩展统计

D. Set the OPTIMIZER_USE_PENDING_STATISTICS parameter toFALSE.

 

QUESTION NO: 66

Exhibit:

View theExhibit and examine the output.

你执行下列命令去启用flashback data archive 在exchange_rate表上。

ALTER TABLE exchange_rate FLASHBACK ARCHIVE;

这个命令的输出是什么?

 

C. The commandgenerates an error because no Flashback Archive name is specified and there is nodefault Flashback Archive.命令产生一个错误,因为没有闪回归档名被指定,且这里也没有默认的闪回归档。

 

Explanation:

QUESTION NO: 67

Exhibit #1:

Exhibit #2:

View theExhibits exhibit1 and exhibit2.

Both theprocesses use PROG_1 as the job template that is already available. The timetaken by the jobs are recorded in theTEST_LOG table. While comparing the time taken tocreate the jobs, the process in exhibit1 takes less time than the process inexhibit2. What is the reason for this?

两个processes使用PROG_1作为job模版(是有效的)。被jobs花费的时间都记录在test_log表中。当比较去创建job花费的时间时,1要比2花费的时间少。原因是?

C. It creates lessmetadata for the jobs.为job创建的元数据少

 

Explanation:

QUESTION NO:68

Exhibit:

从validate database命令的输出中查看:

通过validate database命令去检测坏块描述正确的是:

C. The failure islogged into the Automatic Diagnostic Repository (ADR).故障记录在ADR中。

 

QUESTION NO:69  --默认维护窗口

Exhibit #1:

Exhibit #2:

图1,观察维护窗口属性;图2查询的输出

 (Choose two.)哪两句描述结论?

A. RESOURCE_PERCENTAGEshould be increased.资源百分比应该增加

D. The window durationshould be increased.窗口期限应该增加

 

Explanation:

QUESTION NO:70

ASM supports all but(除之外) which of the following file types? (Choose all thatapply.)  ASM支持all but除口令文件和init.ora文件的文件

 

ASM支持数据文件,spfiles,重做日志文件,归档日志文件,RMAN备份集

ASM不支持口令文件,init.ora文件

 

Explanation:

QUESTION NO:71

执行alter diskgroupdisk group2 drop disk dg2a之后,你从ASM实例中执行select group_number,count(*) from v$asm_operation;

 

从v$asm_operation查询返回0行,含义是什么?

C. The drop diskoperation is complete and you cannot run the undrop disk command. Drop磁盘操作已经完成,你不能运行undrop磁盘命令。

 

 

QUESTION NO:72

What is thenet effect有效效应 of the following command?从磁盘组dgroup1dropabc磁盘alter diskgroupdgroup1 drop disk abc命令的影响:

C. The disk groupwill be automatically rebalanced during the drop operation. Once the rebalancingis complete, the disk will be dropped.在drop操作期间,磁盘组将自动再平衡。一旦平衡完成,disckabc将被dropped。

 

 

Explanation:

QUESTION NO:73

下列哪个不是一个独立磁盘组的配置属性?

A. AU_SIZE

B. COMPATIBLE.RDBMS

C. COMPATIBLE.ASM

D. DISK_REPAIR_TIME

E. DG_DROP_TIME

 

Explanation:

QUESTION NO:74

哪个oracle进程运行在归档模式下,但非归档下不运行。

C. ARCH

 

Explanation:

QUESTION NO:75

你正在peer reviewing回顾同事的DBA的备份计划为他的非归档日志数据库,如下所示as shown here:

1. Put thetablespaces in backup mode. 把表空间置于备份模式

2. Back upthe datafiles for all tablespaces.  备份所有表空间的数据文件

3. Take thetablespaces out of backup mode. 将表空间带离备份模式

4. Back upall archived redo logs.  备份所有的归档日志

Yourcolleague asks for you to comment on his plan. Which response would be correct?你的同事colleague让你评论他的计划,哪个答复是正确的?

A. The plan will work as is.

B. The plan needs to be modified to allow for an archive-logswitch after step 3.

C. The plan needs to be modified so that a backup of thearchived redo logs occurs before step 1.

D. The plan needs to be adjusted调整 to shut down the database after step 1 and to restartthe database after step 2.

E. The plan cannotwork as presented.

本题,原题库答案为B

 

Explanation:

QUESTION NO:76

下面哪个语句是正确的,当数据库处于归档模式和表空间处于热备份模式?

A. Archive log generation is suspended until the tablespacesare taken out of hot backup mode.

B. Datafiles are not written to during hot backups.

C. Changes to the database are cached during the backup andnot written to the datafiles to ensure that the datafiles are consistent whenrecovered.

D. The datafileheaders are not updated during the backup.备份期间数据文件的头不更新。

E. The way data is written to the online redo logs isunchanged during the backup.

 

Explanation:

QUESTION NO:77

当你创建一个备份控制文件时,结果文件写到哪里?

A. The database user dump destination directory

B. The database diagnostic destination directory

C. To $ORACLE_HOME/rdbms

D. To $ORACLE_HOME/admin

E. To the directoryand filename you specify in the command

 

Explanation:

QUESTION NO:78

如果一个日志文件坏掉,它或许引起数据库停转。你怎样纠正这个问题?

C. Use the alterdatabase clear logfile command to clear the log file.使用alter databaseclear logfile命令去清空日志文件。

 

QUESTION NO:79

你已经丢失了数据库中的数据文件1和3(你的数据库已经崩溃),你按照什么顺序去执行下列去恢复你的数据库。

1. Take thedatafiles that were lost offline. 将已经丢失的数据文件offline。

2. startupmount the database            startup mount数据库

4. Restorethe datafiles that were lost           还原数据文件(已经丢失)

5. Recover thedatafiles with the recover datafile command.recover datafile命令去恢复数据文件

3. Issue thealter database open command. 发起alter database open命令

 

6. Bring thedatafiles back online.  将数据文件带回Online

7. Recoverthe database with the recover database command. 用recover database命令恢复数据库

A. 2, 1, 3, 4, 5, 6

B. 2, 4, 5, 3

C. 4, 7, 3

D. 2, 4, 7, 3

E. 2, 7, 3

 

Explanation:

QUESTION NO:80

在一个非完全恢复之后,哪个命令用于打开数据库?

C. alter databaseopen resetlogs

 

Explanation:

QUESTION NO:81—重点理解,好好看看

你的数据库有一个备份(昨天周2,13-15点进行的)。这是你拥有的唯一的备份。自前一个周一你丢失了所有的归档重做日志文件,但你自上周末以前的归档重做日志文件。你现在需要还原你的备份。你可以还原你的数据库到?--重点:数据库备份从13到15点;但是这个期间的归档重做日志文件已经丢失。

E. The database isnot recoverable.数据库不能恢复。

 

 

Explanation:

QUESTION NO:82----在线重做日志文件,数据库pfiles.

(Choose allthat apply.)通过RMAN,不能备份的文件:

A. Database datafiles

B. Control files

C. Online redo logs在线重做日志文件

D. Database pfiles数据库pfiles

E. Archived redo logs

 

记住:

RMAN可以备份的文件:数据库数据文件,控制文件和归档重做日志文件。

 

QUESTION NO:83

Which of thefollowing RMAN structures can data from a datafile span?哪个RMAN架构,来自一个数据文件的跨度的数据?

B. RMAN backup-setpieces within a given backup set在一个给定的备份集之内的RMAN备份集片

 

 

Explanation:

QUESTION NO:84

哪个RMAN备份命令用于去创建block-change 跟踪文件?

C. alter database enable block change trackingusing file ‘/ora01/opt/block_change_tracking.fil’

 

 

Explanation:

QUESTION NO:85

在你的MS开发团队使用.net,和你的linux开发团队使用java发生了一场争论。认识到你的数据库处于危险中,哪个命令将用于去备份你的非归档模式的数据库,使用RMAN用压缩方式?

 

C. backup as compressed backupset database;

 

Explanation:

QUESTION NO:86

 (Choose all that apply.) RMAN恢复编目的目标是:

A. Make backups faster

B. Store RMANmetadata存储RMAN元数据

C. Store RMAN scripts存储RMAN脚本

D. Provide theability to do centralized backup reporting.提供集中备份报告的能力

E. Make recovery faster

 

Explanation:

QUESTION NO:87

RMAN providesmore granular catalog security through which feature?

RMAN通过哪个功能来提供更多颗粒状CATALOG安全:

B. Virtual privatecatalog

 

QUESTION NO:88

You can backup the RMAN recovery catalog with RMAN.

你可以使用RMAN备份RMAN恢复编目。

A. True

 

 

QUESTION NO:89

你使用recovery catalog备份一个数据库之前,你必须使用什么命令?

E. register database

 

 

QUESTION NO:90

你已经启用了control-file自动备份功能。当你从sql*plus启动数据库时,你收到以下错误消息:startup ora-01078:不能打开参数文件‘C:\ORACLE\PRODUCT\11.1.0\DB_1\DATABASE\INITORCL.ORA’。如何使用RMAN回应这个error?

C. Issue the startupnomount command and then issue the restore spfile from autobackup command fromthe RMAN prompt.发起startup nomount命令,接着发起restore spfile from autobackup命令(从RMAN提示符下)

 

 

Explanation:

QUESTION NO:91

Whileworking on a data problem, Curt, Bill, Ben, Mike, and Matt introduced a vast大量 amount of  corrupteddata into the database. Pablo has discovered this problem and he needs you torecover the database to thepointin time prior to the introduction of the corruption. The logicalcorruption was introducedat6:30 p.m. on September 6, 2008. Which of the following would be thecorrect commands to use to restore the database to a point in time before the corruption?

当工作在一个数据问题,curt,bil,ben,mike,matt导入大量的错误数据到数据库。Pablo已经发现了这个问题。他需要你去恢复数据库到发生错误的时间点。逻辑错误发生在2008,sep,6的6:30pm.使用哪个命令去还原数据库到时间点之前?

A.  restoredatabase until time  '06-SEP-200806:30:00');

recoverdatabase until time '06-SEP-2008 06:30:00');

alter databaseopen;

B. restore database until time

'06-SEP-200806:30:00');

recoverdatabase until time

'06-SEP-200806:30:00');

alter databaseopen resetlogs;

C.       restore databaseuntil time '06-SEP-2008 18:29:55');

recover databaseuntil time '06-SEP-2008 18:29:55');

alter database open resetlogs;

D. restore database until time '06-SEP-2008 18:29:55');

alterdatabase open resetlogs;

E. restore database until time '06-SEP-2008 18:29:55');

recoverdatabase;

alterdatabase open resetlogs;

Explanation:

 

QUESTION NO:92

Restore命令中的until change选项的目标:

A.  It allows you to select the SCN that you want torestore to.

它允许你去选择你想要还原到的SCN。

 

 

QUESTION NO:93 重点理解

 (Choose all that apply.)  recover命令的目标是什么?

恢复增量和重做日志文件,并应用增量和重做日志文件。

A. Recover database datafiles from physical disk backupsets.

B. Recover requiredincremental backups from physical disk backup sets.从物理磁盘备份集 中恢复所需的增量备份

C. Recover required archivedredo logs from physical disk backup sets.从物理磁盘备份集 中恢复所需要的归档重做日志文件

D. Apply incrementalbackups to recover the database.应用增量备份

E. Apply archivedredo logs to recover the database.应用归档重做日志文件

Explanation:

QUESTION NO:94

一个废弃obsolete的备份集是什么?

B. A backup that hasexceeded the retention criteria and is no longer needed已经超过保留准则和不再需要的备份

 

 

QUESTION NO:95

列出过期备份命令的目标:

B.  Lists all backups that are missing associatedphysical backup set pieces

列出所有已经丢失的备份(关联的物理备份集片)。

 

Explanation:

QUESTION NO:96

 

Catalog命令的目标:

 

C. To create metadatain the control file and the recovery catalog related to backup set pieces在控制文件和recoverycatalog中创建和备份集片有关的元数据

 

 

QUESTION NO:97

下列哪个命令将失败:

A. report schema;

B. report need backup;

C. report need backup days 3;

D. report user;

E. report obsolete;

 

 

QUESTION NO:98

 

(Choosetwo.)数据库复制的两种不同类型:

A. Active主动

D. Backup-based基于备份

 

QUESTION NO:99

(Choose allthat apply.)当你执行一个表空间基于时间点的恢复时,哪个表空间将总是被还原到辅助auxiliary实例?

A. The SYSTEMtablespace.

B. The UNDOtablespace.

C. All tablespaces with tables.

D. All tablespaces with indexes.

E. No tablespaces are automatically restored.

辅助数据库又称为复制数据库

 

 

QUESTION NO:100

 (Choose all that apply.)哪个操作要求你在执行操作之前手工创建一个辅助实例?

A. Backup-baseddatabase duplication.基于备份的数据库复制

B. Active databaseduplication.活动的数据库复制

C. Tablespace point-in-time recovery.

D. No operation requires the creation of an auxiliaryinstance.

Explanation:

 

Topic 2,Pool 2

QUESTION NO:101

哪个RMAN命令用于去执行一个表空间基于时间点的恢复?

A. recover

 

 

QUESTION NO:102

一个用户在一个表上执行了update。commit事务之后,他们立即认识到在他们的where条件中有一个错误引起了错误行的更新。哪个flashback选项将允许你去undo这个事务还原表到它先前的状态。

E. Flashback Table

 

 

QUESTION NO:103

开发者电话和报告他意外dropped一个重要的lookup表从生产库中。他需要恢复这个表。你将怎么做?

D. Perform aFlashback Drop operation.

 

 

QUESTION NO:104 –重点

 

 (Choose all that apply.)在一个数据库回放工作负载捕获中,什么客户端请求信息被收集?

A. SQL text  SQL文本

B. Shared server requests (Oracle MTS)

C. Bind variablevalues 绑定变量值

D. Information abouttransactions关于事务的信息

E. Remote DESCRIBE and COMMIT operations

 

QUESTION NO:105

(Choose allthat apply.)关于块介质恢复正确的描述是:

A. Any gap in archive logs ends the recovery.

B. If a gap inarchive logs is encountered, RMAN will search forward for newer versions of theblocks that are not corrupt.如果归档日志中的一个gap被遇到,RMAN将向前搜索块(还未损坏的新版本)

C. Uncorrupted blocksfrom the flashback logs may be used to speed recovery.来自于闪回日志中的未损坏的块或许用于加速recovery

D. The database can be in NOARCHIVELOG mode.

E. None of the above.

Explanation:

 

QUESTION NO:106

DBA选择去分别管理SGA和PGA内存(在一个OLTP数据库中),因为这是他的唯一的关于应用的知识。基于系统的可用内存总量,配置SGA,PGA最大值时,最好的起始点是百分比是:

E. 80% SGA, 20% PGA

 

Explanation:

QUESTION NO:107

你注意到,一个长期运行事务被挂起(由于space空间约束),这里没有alter suspend触发的事件来定位问题。你也注意到危急的事务马上达到resumable_timeout值。这些actions中哪个是合适的?

B. Use theDBMS_RESUMABLE.SET_SESSION_TIMEOUT procedure to extend the time-out for thesession while you fix the problem.当你修复这个问题时,可以使用DBMS_RESUMABLE.SET_SESSION_TIMEOUT过程去扩展会话超时事件。

 

QUESTION NO:108

默认哪个是没有被禁用的?

A. Jobs

B. Chains

C. Windows

D. Window groups

E. Schedule调度器,时刻表

Explanation:

 

QUESTION NO:109 (Jesse)

你注意到链条中的job没有完成,在一个非强制的RAC数据库中。什么原因引起的呢?

C. The job affinityis to an instance and that instance is unavailable.job密切关系对于一个实例来说,实例是无效的。

 

 

QUESTION NO: 110-----E和F是啥意思?

TheNLS_LANGUAGE parameter specifies the default conventions to be used for whichof the following globalization elements? Nls_language参数指定了默认的惯例被用于下面哪个全局元素

A. Languages for server messages  服务器消息语言

B. Day and month names and abbreviations 缩写   天和月的名字和缩写

C. Symbols to represent a.m., p.m., AD, and BC

D. Affirmative 肯定的and negative response 否定应答strings (YES, NO)

E. None of the above

F. All of the above

Explanation:

 

QUESTION NO:111

TheNLS_TERRITORY parameter specifies the default conventions to be used for whichof the following globalization elements? (Choose all that apply.) NLS_TERRITORY参数指定默认的习俗,用于下列哪些全球化元素?

A. Date format  日期格式

B. Decimal character十进制字符

C. Group separator分组间隔符

D. First day of the month

E. None of the above

F. All of the above

Explanation:

QUESTION NO:112

(Choosethree.)使用ASM的3个好处:

A. Ease of diskadministration and maintenance磁盘和维护的简化

B. Load balancingacross physical disks 跨物理磁盘的负载均衡

C. Software RAID-1data redundancy with double or triple mirrorsRAID-1数据容错(用2,3镜像)

D. Automatic recovery of failed disks

 

 

QUESTION NO:113

 (Choose three.)在ASM实例中的部件有哪些?

A. SGA

B. Database processes

C. Database datafiles

D. Control files

E. Database parameterfile or spfile

 

QUESTION NO:114

 

 ASM快速磁盘同步的好处是?

A. Failed disks aretaken offline immediately but are not dropped.故障磁盘立即脱机,但不droppedASM跟踪所有已经更改的数据块,在磁盘重新联机时只需要镜像已经更改的块,无需镜像整个磁盘。

 

QUESTION NO:115

 

在再平衡操作期间,增加ASM_POWER_LIMIT参数的值的结果?

 

C. The ASM rebalanceoperation will be parallelized and should complete in a shorter amount of time. ASM平衡操作将并行和在一个较短的时间内完成。

 

 

QUESTION NO:116

一个ASM磁盘组中的默认AU大小,最大的AU大小是:

E. 1MB default, 64MBmaximum

 

QUESTION NO:117

在ASM实例启动时,在ASM实例中的哪些初始化参数指定了磁盘组可以自动mounted。

B. ASM_DISKGROUPS   ALTER diskgroup ALL MOUNT

 

 

QUESTION NO:118

当一个ASM实例接收到一个shutdown normal命令时,它将传输什么命令到所有的数据库实例上去(依赖ASM实例磁盘组)

A. TRANSACTIONAL

B. IMMEDIATE

C. ABORT---不管,流产

D. NORMAL

 

Explanation:

QUESTION NO:119

当你启动你的ASM实例时,你接收到下列错误:这个错误是什么引起的?

D. The ASM_DISKSTRINGparameter is not set; therefore disk discovery is not possible. ASM_DISKSTRING参数未设置,这样磁盘不能发现。

 

 

QUESTION NO:120

作为反联盟的DBA,你已经决定,你需要去促进一些容错(在你的数据库中)。使用ASM,你想创建一个磁盘组(将提供最好的容错为你的ASM数据(你没有高级的SAN镜像技术,不幸的是)。哪个命令将创建一个磁盘组(提供最大的数据容错措施)。

 

C.CREATE DISKGROUPdg_alliance1 HIGH REDUNDANCY

failgroup diskcontrol1 DISK 'c:\oracle\asm_disk\_file_disk1'NAME file_

disk1

failgroup diskcontrol2 DISK'c:\oracle\asm_disk\_file_disk2' NAME file_

disk2

failgroup diskcontrol2 DISK'c:\oracle\asm_disk\_file_disk3' NAME file_

disk3;

 

 

QUESTION NO:121

你想迁移你的数据库到ASM下,因此你进行了一个干净的shutdown,(进行一个完整的数据库的关闭备份,记下你的控制文件、在线重做日志文件的位置,并改变你的spfile使用OMF)。最后步骤是去运行一个RMAN脚本去进行转换。

使用下列步骤,下列RMAN命令应该被执行,按照什么正确顺序?

重点记住

1. STARTUP NOMOUNT 启动到nomount模式下

7. RESTORE  CONTROLFILE  FROM ‘controlfile_location’还原控制文件

6. ALTER  DATABASE MOUNT  启动到mount模式下

5. BACKUP  AS COPY  DATABASE  FORMAT  ‘+dgrp4’

4. SWITCH DATABASE TO COPY 切换数据库去copy

3. SQL “ALTER DATABASE RENAME ‘logfile1 path’ TO ‘+dgrp4‘“ # plus all other logfiles 执行alter databaserenamelogfile1 path to +dgrp4

2. ALTER DATABASE OPEN RESETLOGS resetlogs打开数据库

 

A. 2, 5, 3, 1, 7, 6, 4

B. 1, 7, 6, 5, 4, 3,2

C. 5, 1, 2, 7, 4, 6, 3

D. 7, 3, 1, 5, 6, 2, 4

Explanation:

 

QUESTION NO:122

你怎样反转alter diskgroup … drop disk 命令的影响(如果它还not yet没有完成)

A. Issue the ALTER DISKGROUP … ADD DISK command.

B. Issue the ALTERDISKGROUP … UNDROP DISKS command.

C. Issue the ALTER DISKGROUP … DROP DISK CANCEL command.

D. Retrieve the disk from the Recycle Bin after theoperation completes.

Explanation:

 

alter diskgroup DATA drop disk VOL5;

  取消删除disk的命令,只能在上述命令没执行完成的时候有效

  ALTER DISKGROUP DATA UNDROP DISKS;

  The UNDROP DISKS clause of the ALTER DISKGROUP statement allows pending disk drops to be undone. It will not revert drops that have completed, or disk drops associated with the

  dropping of a disk group.

 

 

 

QUESTION NO:123

你引用已经存在的ASM文件,你需要使用一个完整的合格的qualified ASM文件名。你的开发数据库有一个磁盘组Dg2A,数据库名是 DEV19,你想引用的ASM文件是USERS02表空间下的一个数据文件。下面哪个是这个asm文件的有效ASM文件名

 

B. +DG2A/dev19/datafile/users02.701.2

 

QUESTION NO:124

哪个后台进程协调磁盘组的再平衡活动?

C. RBAL

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