Oracle 053 515-594译文

 

QUESTION NO:515

You are working on aCATDB database that contains an Oracle Database version 11.1 catalog schemaowned by the user RCO11. The INST1 database contains an Oracle Database version10.1 catalog schema owned by the user RCAT10.

You want the RMAN toimport metadata for database IDs 1423241 and 1423242, registered in RCAT10,into the recovery catalog owned by RCO11. You executed the following commands:

 

RMAN> CONNECT CATALOG rco11/password@catdb

RMAN> IMPORT CATALOG rcat10/oracle@inst1 NOUNREGISTER;

Which two statements aretrue regarding the tasks accomplished with these commands? (Choose two.)

A. They import all metadata from theRCAT10 catalog.

B. They unregister the database from the RCAT10 catalog.

C. They do not register the databases registered in theRCAT10 catalog.

D. They register all databasesregistered in the RCAT10 catalog.

 

Explanation:

QUESTION NO:516

Which statements aretrue regarding table compression? (Choose all that apply.)

A. It requires uncompress operation during I/O.

B. It saves disk space and reducesmemory usage.

C. It saves disk space but has no effect on memory usage.

D. It incurs extra CPU overhead during DML but not directloading operations.

E. It incurs extra CPU overhead duringDML as well as direct loading operations.

 

QUESTION NO:517

You have arange-partitioned table in your database. Each partition in the table containsthe sales data for a quarter季度. Thepartition related to the current quarter is modified frequently and other partitionsundergo fewer data manipulations. The preferences for the table are set totheir default

values. You collectstatistics for the table using the following command in regular intervals:

SQL> EXECUTE DBMS_STATS.GATHER_TABLE_STATS('SH','SALES',GRANULARITY=>'GLOBAL');

You need statistics tobe collected more quickly. What can you do to achieve this?

A. Set DYNAMIC_SAMPLING to level 4.

B. Set the STATISTICS_LEVEL parameter to BASIC.

C. Set the INCREMENTAL value to TRUEfor the partition table.

D. Increase the value of STALE_PERCENT for the partitiontable.

 

Explanation:

QUESTION NO:518

Which two statements aretrue regarding the Automatic Diagnostic Repository (ADR) in Oracle Database11g? (Choose two.)

A. A single ADR can support multipleADR homes for different database instances.一个ADR可以支持多个ADRhomes为不同的数据库实例

B. The alert files are stored in XML file format in theTRACE directory of each ADR home.

C. If the environmental variableORACLE_BASE is set, then DIAGNOSTIC_DEST is set to $ORACLE_BASE.如果环境变量oracle_base设置，diagnostic_dest设置为$oracle_base.

D. The BACKGROUND_DUMP_DEST initialization parameteroverrides the DIAGNOSTIC_DEST initialization parameter for the location of thealert log file.

 

QUESTION NO:519

Which two statements aretrue with respect to关于 the maintenance window? (Choose two.)

A.  A DBA can enable or disable an individual task inall maintenance windows.

Dba可以启用或禁用一个独立任务（维护窗口中）

B. A DBA cannot change the duration of the maintenancewindow after it is created.

C. In case of a long maintenance window, all AutomatedMaintenance Tasks are restarted every four hours.

D. A DBA can control the percentage ofthe resource allocated to the Automated Maintenance Tasks in each window.

Dba可以控制资源分配百分比

 

Explanation:

QUESTION NO:520

In which situations willthe ASM metadata backup help you recover the ASM disk in a disk group?(Chooseall that apply.)

下列哪些场景中，ASM元数据备份有助于你恢复磁盘组中的ASM磁盘。

A. when one or more disks in an ASMdisk group are lost

B. when the data file on an ASM disk group gets corrupted

C. when one of the disks in a disk group is accidentalyunplugged

D. when one or more file directorypaths are accidentally deleted from an ASM disk group

 

Explanation:

QUESTION NO:521

Observe the followingPL/SQL block:

BEGIN

dbms_spm.configure('SPACE_BUDGET_PERCENT', 30);

END;

Which statement iscorrect regarding the above PL/SQL block?

A. It reserves 30% of the space in the SYSTEM tablespace forSMB.

B. It reserves 30% of the space in the SYSAUX tablespace forSQL Management Base (SMB).

C. It generates a weekly warning in thealert log file when SMB occupies more than 30% of theSYSAUX tablespace.

D. It automatically purges the SQL management objects whenSMB occupies more than 30% of the SYSAUX tablespace.

 

Explanation:

QUESTION NO:522

You want to perform thefollowing operations for the DATA ASM disk group:

-Verify the consistency of the disk.验证磁盘的一致性

-Cross-check all the file extent maps and allocationtables for consistency.交叉验证所有文件区间映射和分配表的一致性

-Check whether the alias metadata directory and filedirectory are linked correctly.检查别名元数据目录和文件目录连接是否正确

-Check that ASM metadata directories do not haveunreachable allocated blocks.检查ASM元数据目录没有不能到达可分配的块。

Which commandaccomplishes these tasks?

A. ALTER DISKGROUP data CHECK;

B. ALTER DISKGROUP data CHECK DISK;

C. ALTER DISKGROUP data CHECK FILE;

D. ALTER DISKGROUP data CHECK DISK IN FAILURE GROUP 1;

 

Explanation:

QUESTION NO:523

Examine the followingRMAN command:

BACKUP DATABASE

TAG TESTDB

KEEP UNTIL 'SYSDATE+1'

RESTORE POINT TESTDB06;

Which two statements aretrue regarding the backup taken by using the above RMAN command?(Choose two.)

A. Only data files and the control file are backed up.

B. Archived redo logs are backed uponly if the database is open during the backup.

C. The backup is deleted after one day, regardless of thedefault retention policy settings.

D. The backup becomes obsolete after oneday, regardless of the default retention policy settings.

 

Explanation:

QUESTION NO:524

You want the AutomaticSQL Tuning process to stop accepting and implementing the recommended SQLprofiles automatically. Which action would you perform to achieve this?

A. Edit the automatic maintenance window groupconfiguration.

B. Set the CURSOR_SHARING parameter to EXACT for thedatabase instance.

C. Use theDBMS_SQLTUNE.SET_TUNING_TASK_PARAMETERS procedure to set ACCEPT_SQL_PROFILES toFALSE.

D. Set the SQLTUNE_CATEGORY parameter to DEFAULT for thedatabase instance.

 

Explanation:

QUESTION NO:525

Which two statements aretrue regarding the functionality of the remap command in ASMCMD?(Choose two.)关于ASMCMD中的remap命令功能描述正确的是：

A. It repairs blocks that have read diskI/O errors.它修复坏（已经读取到磁盘IO错误的）

B. It checks whether the alias metadata directory and thefile directory are linked correctly.

C. It repairs blocks by always reading them from the mirrorcopy and writing them to the original location.

D. It reads the blocks from a good copyof an ASM mirror and rewrites them to an alternate交替轮流、候选者 locationon disk if the blocks on the original location cannot be read properly.它从一个ASM镜像的copy读取块，重写他们到磁盘的一个候选者位置（如果块在原始位置不能正确读）

 

Explanation:

QUESTION NO:526

During the installationof Oracle Database 11g, you do not set ORACLE_BASE explicitly. You selected theoption to create a database as part of the installation. How would thisenvironment variable setting affect the installation?

在11g安装过程中，如果不设置oracle_base。你选择在安装过程中创建数据库时，环境变量设置如何影响安装？

A. The installation terminates with an error.

B. The installation proceeds with the default value withoutwarnings and errors.

C. The installation proceeds with the default value but itwould not be an OFA-compliant database.

D. The installation proceeds with thedefault value but a message would be generated in the alert log file.安装用默认值来进行，但一个消息将产生在alert.log文件中。

 

Explanation:

QUESTION NO:527

View the Exhibitexhibit1.

In theCUSTOMERS_OBE table, when the value of CUST_STATE_PROVINCE is "CA",the value of COUNTRY_ID is "US."

View the Exhibitexhibit2 to examine the commands and query plans.

The optimizer can sense8 rows instead of 29 rows, which is the actual number of rows in the

table. What can you doto make the optimizer detect the actual selectivity?

 

A. Set the STATISTICS_LEVEL parameter to TYPICAL.

B. Change the STALE_PERCENT value for the CUSTOMERS_OBEtable.

C. Set the OPTIMIZER_USE_PENDING_STATISTICS parameter toFALSE.

D. Create extended statistics for theCUST_STATE_PROVINCE and CUSTOMERS_OBE columns.

 

Explanation:

QUESTION NO:528

View the Exhibit toexamine the Automatic SQLTuning result details.

Which action would yousuggest for the selected SQL statement in the Exhibit?

A. Accept the recommended SQL profile.

B. Collect statistics for the related objects.

C. Run the Access Advisor for the SQLstatement.

D. Run the Segment Advisor for recommendations.

 

Explanation:

QUESTION NO:529

Evaluate the followingcode:

SQL>VARIABLE task_name VARCHAR2(255);

SQL>VARIABLE sql_stmt VARCHAR2(4000);

SQL>BEGIN

:sql_stmt := 'SELECT COUNT(*) FROM customers

WHERE cust_state_province =''CA''';

:task_name := 'MY_QUICKTUNE_TASK';

DBMS_ADVISOR.QUICK_TUNE(DBMS_ADVISOR.SQLACCESS_ADVISOR,

:task_name, :sql_stmt);

END;

What is the outcome ofthis block of code?

A. It creates a task and workload, andexecutes the task.

B. It creates a task and workload but does not execute thetask.

C. It produces an error because a template has not beencreated.

D. It produces an error because the SQL Tuning Set has notbeen created.

 

Explanation:

QUESTION NO:530

You have applicationsthat have frequently executed queries, and produce small and static result sets.

You configure the sqlnet.ora file in theclient machine to set a nonzerovalue for the OCI_RESULT_CACHE_MAX_SIZEparameter.

What is the purpose ofthis configuration?

你有应用，频繁执行查询，产生很少的和静态的结果集。你配置sqlnet.ora文件在客户端机器上去设置非0值为OCI_RESULT_CACHE_MAX_SIZE参数。

这个配置的目标是什么？

A. to avoid round trips to the serverby enabling caching of query results in client memory

B. to improve performance by storing a copy of the data fromthe private SQL area of the PGA

C. to enhance the query performance by creating a cache inthe client memory for sorting operations

D. to avoid the storing of query plans and results in theserver by creating a cache in the client memory

 

Explanation:

QUESTION NO:531

You plan to use SQLPerformance Analyzer to analyze the SQL workload. You created a SQL Tuning Setas a part of the workload capturing. What information is captured as part ofthis process? (Choose all that apply.)

你计划使用SQL性能分析器去分析sql工作负载。你创建一个sql调优集作为工作负载捕获的一部分。捕获的信息包括：

A. the SQL text

B. the execution plan

C. the execution context

D. the execution frequency

E. the system change number (SCN)

 

Explanation:

QUESTION NO:532

View the following SQLstatements:

Transaction T1

INSERT INTO hr.regions VALUES (5,'Pole');

COMMIT;

Transaction T2

UPDATE hr.regions SET region_name='Poles' WHERE region_id= 5;

COMMIT;

Transaction T3

UPDATE hr.regions SET region_name='North and South Poles'WHERE

region_id = 5;

You want to back outtransaction T2. Which option would you use?

A. It is possible, but transaction T3 also backs out.

B. It is possible with the NOCASCADE_FORCEoption.

C. It is possible with the NONCONFLICT_ONLY option.

D. It is not possible because it has conflicts with transactionT3.

 

Explanation:

 

QUESTION NO:533

Which three statements are trueregarding persistent lightweight jobs? (Choose three.)关于永久性轻量级jobs描述正确的语句是：

A. The user cannot set privileges onpersistent lightweight jobs.用户不能在永久性轻量级jobs上设置权限。

B. The use of a template is mandatoryto create persistent lightweight jobs.模版的使用时强制的，去创建永久性轻量级jobs。

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

D. Persistent lightweight jobs areuseful when users need to create a large number of jobs in a short time.永久性轻量级jobs是有用的，当用户需要创建一个大量的jobs（在一个短时间内）

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

 

Explanation:

QUESTION NO:534

What is the advantage ofsetting the ASM-preferred mirror read for the Stretch cluster configuration?

设置ASM首选的镜像读（充分利用cluster配置）的优势是什么？

A. It improves resync operations.

B. This feature enables much faster file opens.

C. It improves performance as fewer extent pointers areneeded in the shared pool.

D. It improves performance by readingfrom a copy of an extent closest to the node.它改进读的性能（从一个区间的副本中）

 

Explanation:

QUESTION NO:535

Identify two situationsin which you can use Data Recovery Advisor for recovery. (Choose two.)你可以使用DRA为恢复（识别两种场景）

A. The database files are corruptedwhen the database is open.

B. The archived log files are missing for which backup isnot available.

C. The user has dropped an important table that needs to berecovered.

D. You are not able to start up thedatabase instance because the required database files are missing.

 

 

Explanation:

QUESTION NO:536

The ADMIN_EMP table hascolumns EMPNO, ENAME, DEPTNO, and SAL. It has a materialized view EMP_MV with amaterialized log and an ENAME_IDX index on the ENAME column.You need to performan online table redefinition on the ADMIN_EMP table to move it from the TBS1tablespace to the TBS2 tablespace in the same schema.

What action is requiredfor the dependent objects when you perform online redefinition on the table?

Emp_mv物化视图，有物化日志，ename_idx索引在ename列上。你需要执行一个在线表重定义（在admin_emp表上）移动它到TBS1到TBS2，同一模式下。

当你在表上执行在线表重定义时，哪些依赖对象是需要的？

A. The materialized view should have a fast refreshperformed after the online table redefinition is completed.

B. The materialized view should have acomplete refresh performed after the online table redefinition is completed.物化视图应该有一个完全的刷新执行，在线表重定义完成之后。

C. The materialized view, materialized log, and the indexshould be dropped and re-created after the online table redefinition iscomplete.

D. The materialized view and materialized log should bedropped and all constraints disabled and re-created after the online tableredefinition is complete.

 

Explanation:

QUESTION NO:537

View the Exhibit toexamine the error obtained during the I/O calibration process.

There are no data fileson raw devices. What is the reason for this error?

这里没有数据文件在RAW设备上。什么原因造成的。

A. The DISK_ASYNCH_IO parameter is set to TRUE.

B. The FILESYSTEMIO_OPTIONS parameter is setto NONE.

C. Another session runs the I/O calibration processconcurrently.

D. The pending area has not been created before running theI/O calibration process.

 

Explanation:

QUESTION NO:538

You want to track andstore all transactional changes to a table over its lifetime. To accomplish thistask, you enabled Flashback Data Archive with the retention of 5 years. Aftersome time, the business requirement changed and you were asked to change theretention from 5 years to 3 years. To accomplish this, you issued the followingcommand:

ALTER FLASHBACK ARCHIVE fla1 MODIFY RETENTION 3 YEAR;

What is the implicationof this command?

A. The command produces an error because the retention timecannot be reduced.

B. All historical data older than threeyears is purged from the flashback archive FLA1.

C. All historical data is purged and the new flashback dataarchives are maintained for three years.

D. All historical data is retained but the subsequentflashback data archives are maintained for only three years.

 

Explanation:

QUESTION NO:539

Examine the followingcommand:

ALTER DISKGROUP data MOUNT FORCE;

In which scenario canyou use the above command to mount the disk group?

A. when ASM disk goes offline

B. when one or more ASM files are dropped

C. when some disks in a disk group areoffline

D. when some disks in a failure group for a disk group arerebalancing

 

QUESTION NO:540

To control the executionof a server process when it is receiving bad packets from a potentially malicious恶意 client, you set the SEC_PROTOCOL_ERROR_FURTHER_ACTION initialization parameteras follows:

SQL> ALTER SYSTEM SETSEC_PROTOCOL_ERROR_FURTHER_ACTION = Drop,10;

What is the significanceof this setting?

A. It terminates the client connection after 10 bad packetsand the client cannot reconnect to the same instance.

B. It terminates the client connectionafter 10 bad packets but the client can still reconnect, and attempt the sameoperation again.

C. It terminates the client connection 10 seconds afterreceiving a bad packet and the client cannot reconnect to the same instance.

D. It terminates the client connection after receiving a badpacket and the client can reconnect to the same instance after 10 minutes.

 

Explanation:

QUESTION NO:541

You have the followingrequirements in relation to the detection of block corruption for your databaseinstance:

1. Check for logical self-consistency of data blocks whenmodified in memory.数据块在内存中被修改时检查逻辑上的一致性

2. Checksums are calculated before and after the blockchange.  块修改前后检验和的计算

3. Checks are performed for the lost writes to thephysical standby database.检查被执行为丢失的写到物理备用库上。

Which method would helpyou perform the above checks automatically?

A. Set the DB_SECUREFILE parameter to PERMITTED.

B. Set the DB_ULTRA_SAFE parameter toDATA_ONLY.

 

C. Set the DB_LOCK_CHECKSUM parameter to TYPICAL.

D. Set the DB_LOST_WRITE_PROTECT parameter to TYPICAL.

 

Explanation:

QUESTION NO:542

You are managing anOracle Database 11g instance and an Oracle Database 10g instance on the samemachine. Both instances use the ASM instance as storage. Which statementsregarding the ASM disk group compatibility attributes are true in thisscenario? (Choose all that apply.)

你正在管理一个11g库和10g在同一台机器上。两个实例都使用ASM实例作为存储。关于ASM磁盘组兼容性属性描述正确的是：

A. ASM compatibility controls whichfeatures for the ASM will be enabled. ASM兼容性控制功能将被启用

B. RDBMS compatibility and the databaseversion determines whether a database instance can mount the ASM disk group.  RDBMS兼容性和数据库版本决定是否数据库实例可以绑定ASM磁盘组。

C. The RDBMS compatibility settings for a disk group controlthe format of data structures for ASM metadata on the disk.

D. The database-compatibility versionsettings for each instance must be greater than or equal to the RDBMScompatibility of all ASM disk groups used by that database instances. 数据库兼容性版本设置（为每个实例）必须大于等于被数据库实例所使用的所有ASM磁盘组的RDBMS兼容性

 

Explanation:

QUESTION NO:543

Evaluate the followingfunction code:

CREATE FUNCTIONget_dept_avg(dept_id NUMBER)

RETURN NUMBER

RESULT_CACHE  RELIES_ON (EMPLOYEES)

IS

avgsal NUMBER(6);

BEGIN

 

SELECT AVG(SALARY)INTOavgsal

FROM EMPLOYEES

WHERE DEPARTMENT_ID =dept_id;

RETURN avgsal;

END get_dept_avg;

Which statement is trueregarding the above function?

A. The cached result becomes invalidwhen any structural change is done to the EMPLOYEES table.

B. If the function execution results in an unhandledexception, the exception result is also stored in the cache.

C. Each time the function is invoked in a different session,the current result in the result cache gets overwritten.

D. If the function is invoked with a different parametervalue, the existing result in the result cache gets overwritten by the latestvalue.

 

QUESTION NO:544

Following is the list oflocations in random order随即顺序where oranfstab can be placed.

1./etc/mtab

2.$ORACLE_HOME/dbs/oranfstab

3./etc/oranfstab

What is the sequence inwhich Direct NFS will search the locations?

A. 1, 2, 3

B. 3, 2, 1

C. 2, 3, 1

D. 1, 3, 2

 

QUESTION NO:545

While performing thebackup of the flash recovery area, you notice that one of the archived redo logfiles is missing. You have multiple destinations for archived redo log files.What implications does it have on the backup of the flash recovery area?当执行闪回恢复区的备份时，你注意到归档重做日志文件中的一个已经丢失。你有多个目标位置。

A. The backup succeeds but it would be without the missingarchived log.

B. The backup fails because one of the archived redo logfiles is missing.

C. The backup succeeds because it failsover to one of the alternative archived redo log destinations.

D. During backup, you are prompted for the alternativedestination for the missing archived redo log file.

 

QUESTION NO:546

You performed the RMANdatabase backup with the KEEP option. Which two statements are true regarding thisbackup? (Choose two.)

A. The KEEP option overrides theconfigured retention policy.

B. The KEEP option is an attribute of an individual backuppiece.

C. The backup contains only data files and archived redo logfiles.

D. The backup contains data files, theserver parameter file, and the control file even if the control file autobackupis disabled.

 

QUESTION NO:547

 

Which statement is truewhen Automatic Workload Repository (AWR) baselines are created using baselinetemplates?当使用基线模版创建AWR基线时，正确的描述是：

A. AWR baselines are always created as repeating baselines.

B. AWR baselines can be created on thebasis of two time values.

C. AWR baselines are always created with infinite expirationduration.

D. AWR baselines are always created using the AutomaticWorkload Repository (AWR) retention period as expiration duration.

 

QUESTION NO:548

What two statements aretrue regarding the recommendations received from the SQL Access Advisor?(Choose two.)关于从SQL访问建议器中接受到的推荐方案，正确的两句是：

A. It can recommend partitioning only ontables that have at least 10,000 rows.它可以推荐分区只有在表超过至少1万行后。

B. It cannot generate recommendations that support multipleworkload queries.

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

D. It can recommend partitioning ontables provided that the workloads have some predicates and joins on thecolumns of the NUMBER or DATE type.

它可以推荐分区在表（提供工作负载，有一些断言和连接在数字或日期类型的列上）

QUESTION NO:549

What are the advantagesof variable extent size support for large ASM files? (Choose two.)为大ASM文件提供可变区间大小的优点是：

A. It improves performance in the extended clusterconfiguration by reading from a local copy of an extent.

B. It improves resync operations when the disk comes onlineafter being taken offline for maintenance purposes.

C. This feature enables faster fileopens because of the reduction in the amount of memory that is required tostore file extents.

D. Fewer extent pointers are needed todescribe the file and less memory is required to manage the extent maps in theshared pool.

 

Explanation:

QUESTION NO:550

You plan to collect theAutomatic Workload Repository (AWR) data every Monday morning for a month. Youwant Oracle Database to automatically create a baseline every Monday and removethe old baseline. What is the correct action to achieve this?你计划在每个月的周一早晨收集AWR数据。你想让oracle数据库去自动创建一个baseline（每周一），删除旧的基线。则呢样才能完成这？

A. Create a repeating baselinetemplate.

B. Insert a finding directive for future ADDM tasks.

C. Create and populate a SQL Tuning Set from the AWR onevery Monday.

D. Change the RETENTION setting for the AWR snapshots to 7days on Monday.

 

QUESTION NO:551

You want to convert yourexisting non-ASM files to ASM files for the database PROD. Which method orcommand would you use to accomplish this task?你想转换你已经存在的非ASM文件为ASM文件（为prod库）。你使用哪个方法或命令来完成这个任务？

A. Data Pump Export and Import

B. conventional export and import

C. the CONVERT command of RMAN

D. the BACKUP AS COPY.. command of RMAN

 

QUESTION NO:552

Which method would youuse to undo the changes made by a particular transaction without affecting thechanges made by other transactions?

你将使用哪种方法去重做改变（通过一个特别的事务，没有其他事务影响改变的事务）

A. point-in-time recovery

B. execute the ROLLBACK command with transaction number

C. flashback the database to before the transaction wascommitted

D. determine all the necessary undo SQLstatements from

FLASHBACK_TRANSACTION_QUERY and use them for recovery

从flashback_transaction_query决定所有必需的undo语句，使用他们去恢复。

QUESTION NO:553

You performed anincomplete recovery and opened the database with the RESETLOGS option.

The LOG_ARCHIVE_FORMATparameter is set to 'ora_%t_%s_%r.log'. Which statementregarding the archived redo log files, created in an earlier incarnation of thedatabase, is true?

你执行一个非完全的恢复，用resetlogs选项打开数据库。Log_archive_format参数设置为'ora_%t_%s_%r.log'. 关于归档重做日志文件（创建在较早的数据库的前身）是正确的？

A. The archived redo log files will be overwritten.

B. The archived redo log files are deleted automatically.

C. The archived redo log files should be moved to some otherlocation.

D. The archived redo log files arestill maintained because the file names are unique.归档重做日志文件仍然保留，因为文件名是唯一的。

 

QUESTION NO:554

An online tablespace,TEST_TBS, is full and you realize that no server-managed tablespace thresholdalerts were generated for the TEST_TBS tablespace. What could be the reason, ifthe

TEST_TBS tablespace doesnot include autoextensible data files?

在线表空间,test_tbs，满的，你认识到没有服务器管理的表空间thread警告产生（为test_tbs表空间）。如果test_tbs表空间不包括自动扩展数据文件，什么原因造成的呢？

A. TEST_TBS is a small file tablespace.

B. TEST_TBS is a bigfile tablespace (BFT).

C. TEST_TBS is the default temporary tablespace.

D. TEST_TBS is a dictionary-managedtablespace.

 

QUESTION NO:555????

Which two initializationparameters would you set to enable Automatic Shared Memory Management? (Choosetwo.)你应该设置哪两个初始化参数去启用automaticshared memory management?

A. set SHARED_POOL_SIZEto zero设置共享池大小为0

B. set STATISTICS_LEVEL to BASIC

C. set SGA_TARGET to a non-zero value设置SGA_TARGET为非0值

D. set DB_CACHE_SIZE to a non-zero value

E. set STATISTICS_LEVEL to TYPICAL or ALL

 

QUESTION NO:556

On which two databaseobjects can the VERSIONS clause of the Flashback Versions Query be used?(Choose two.)哪两个数据库对象可以在flashback version query中的versions条件中使用？

A. fixed tables

B. heap tables

C. external tables

D. temporary tables

E. Index-Organized Tables (IOTs)

 

QUESTION NO:557

You have three temporarytablespace groups named G1, G2, and G3 in your database.

You are creating a newtemporary tablespace as follows:

CREATE TEMPORARY TABLESPACE TEMP1 TEMPFILE'/u1/data/temp1.dbf' SIZE 10M

TABLESPACE GROUP '';

Which statementregarding the above command is correct?

A. It will create the tablespace TEMP1 in group G1.

B. It will create the tablespace TEMP1 in group G3.

C. It will not add the tablespace TEMP1to any group.它将不能添加表空间temp1到任何组。

D. It will create the tablespace TEMP1 in the default group.

 

QUESTION NO:558

View the Exhibit andexamine the output.

You executed thefollowing command to enable Flashback Data Archive on the

EXCHANGE_RATE table:

ALTER TABLEexchange_rate FLASHBACK ARCHIVE;

What is the outcome ofthis command?

A. The table uses the default Flashback Archive.

B. The Flashback Archive is created on the SYSAUXtablespace.

C. The Flashback Archive is created on the same tablespacewhere the tables are stored.

D. The command generates an errorbecause no Flashback Archive name is specified and there is no defaultFlashback Archive.

 

QUESTION NO:559

You executed the following SQL statement to shrink theEMPLOYEES table segment stored in the EXAMPLE tablespace:

ALTER TABLEemployees SHRINK SPACE CASCADE;

Which statement is correct in this scenario?

A. The EMPLOYEES table will be changed to read-only modeduring the shrink operation.收缩操作期间，表将改变为只读模式

B. The indexes created on the EMPLOYEES table will need tobe rebuilt after the shrink operation is over.收缩完成后索引需要重建

C. The shrink behavior will be cascadedto all dependent segments of the table that support a shrink operation.收缩行为将被级联到表的所有的关联段上（支持收缩操作）

D. Data manipulation language (DML) operations will not bepossible on the EMPLOYEES table during the COMPACTION phase of the shrinkoperation.

 

 

QUESTION NO:560

The Automatic DatabaseDiagnostic Monitor (ADDM) analysis runs every 60 minutes on your database. Yourdatabase is facing a series of interrelated problems over a period of twohours. You need to ensure that the ADDM analysis is run over a time span of twohours in future. What

would you do?在你的数据库中运行ADDM分析需要60分钟。你的数据库面临一系列的相互关联度的问题（过去的2个小时内）。你需要确保ADDM分析未来运行超过2小时的时间间隔。你应该做什么？

A. Create two custom ADDM tasks.

B. Modify the AWR snapshot timeinterval to two hours.

C. Create a new scheduler window for a time period of twohours.

D. Modify the Automatic Workload Repository (AWR) snapshotretention period to two hours.

 

QUESTION NO:561

You have 100 segments inthe USERS tablespace. You realize that the USERS tablespace is running low onspace. You can use Segment Advisor to _____.你有100个段在users表空间中。你认识到users表空间运行low空间。你可以使用段建议器去：

A. identify the segments that youshould shrink识别你应该收缩的段。

B. modify the storage parameters for the tablespace

C. automatically shrink the segments with unused space

D. check the alerts generated for the tablespace that isrunning low on space

 

QUESTION NO:562

You are using RecoveryManager (RMAN) to perform backups. In which three situations would you performa compressed backup? (Choose three.)

你正在使用RMAN去执行备份。在这样的3个条件中，你执行一个压缩的备份（选择3个）。

A. You are backing up to tape and your tape device performsits own compression.

B. You are making image copies, and you have not enabledtablespace compression.

C. You are using disk-based backups and disk space inyour Flash Recovery Area, or other diskbased backup destinations are limited.你正在使用基于磁盘的备份，磁盘空间在你的闪回恢复区，其他磁盘备份目标空间是有限的。

D. You are performing your backups tosome device over a network where reduced network bandwidth is more importantthan CPU usage.

E. You are using some archival backupmedia, such as CD or DVD, where reducing backup sizes saves media costs andarchival storage.

 

QUESTION NO:563

Immediately after addinga new disk to or removing an existing disk from an ASM instance, you find thatthe performance of the database goes down initially until the time the additionor removal process is completed, and then gradually becomes normal.

Which two activitieswould you perform to maintain a consistent performance of the database whileadding or removing disks? (Choose two.)

从一个asm实例中添加一个新磁盘或删除一个已存在磁盘，你发现数据库的性能立即下降直到添加或删除进程完成之后，性能才正常。

当添加或删除磁盘时，你应该执行什么活动来维持数据库性能的一致性。

A. Define the POWER option while addingor removing the disks.定义power选项

B. Increase the number of ARB processesby setting up a higher value for ASM_POWER_LIMIT. 增加ARB进程的数量通过设置ASM_POWER_LIMIT值

C. Increase the number of DBWR processes by setting up ahigher value for

DB_WRITER_PROCESSES.

D. Increase the number of slave database writer processes bysetting up a higher value for DBWR_IO_SLAVES.

 

QUESTION NO:564

View the Exhibit.

As shown in the diagram,in-memory statistics are transferred to the disk at regular intervals.

Which background processperforms this activity?

A. CKPT

B. SMON

C. MMON

D. DBWR

 

Explanation:

 

QUESTION NO:565

Identify three keyfeatures of ASM. (Choose three.)

A. file striping文件条带话

B. allocation unit mirroring分配单元镜像

C. automatic disk rebalancing自动磁盘再平衡

D. automatic file size increment

E. automatic undo management

 

QUESTION NO:566

You have threeproduction databases, HRDB, FINDB, and ORGDB, that use the same ASM instance.At the end of the day, while all three production database instances arerunning, you execute the following command on the ASM instance :你有3个生产库，HRDB，FINDB，ORGDB使用相同的ASM实例。一天结束的时候，所有的生产库实例运行，你执行下列命令在ASM实例上。

SQL> shutdown immediate;

What is the result ofexecuting this command?

 

A. The ASM instance is shut down, but the other instancesare still running.

B. It results in an error because otherdatabase instances are connected to it.

C. All the instances, including the ASM instance, are shutdown in the IMMEDIATE mode.

D. HRDB, FINDB, and ORGDB instances are shut down in theABORT mode and the ASM instance is shut down in the IMMEDIATE mode.

 

QUESTION NO:567

Which three statements are true regarding the functioningof the Autotask Background Process (ABP)? (Choose three.)关于自动任务后台进程功能描述正确的3句：

A. It translates tasks into jobs forexecution by the scheduler.

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

C. It determines the list of jobs thatmust be created for each maintenance window.

D. It is spawned by the MMON backgroundprocess at the start of the maintenance window.

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

 

QUESTION NO:568

You executed thefollowing command:

RMAN> RECOVER COPY OF DATAFILE'/u01/app/oracle/oradata/orcl/users01.dbf';

Which statementregarding the above command is correct?

A. The '/u01/app/oracle/oradata/orcl/users01.dbf' data fileis recovered from the image copy.

B. The '/u01/app/oracle/oradata/orcl/users01.dbf' data fileis recovered from the last incremental backup.

C. Image copies of the'/u01/app/oracle/oradata/orcl/users01.dbf' data file are updated with all changesup to incremental backup SCN.

D. Image copies of the'/u01/app/oracle/oradata/orcl/users01.dbf' data file are recovered using the abovecommand if data file recovery fails.

 

QUESTION NO:569

Which two statementsregarding a SQL profile are true? (Choose two.)关于sql profile描述正确的是：

 

A. It is built by Automatic TuningOptimizer.通过automatic tuningoptimizer来修建

B. It cannot be stored persistently in the data dictionary.

C. It can be used by the queryoptimizer automatically. 通过查询优化器来自动使用

D. It can be created manually by using the CREATE PROFILEcommand.

 

QUESTION NO:570

Evaluate the followingcommand and its output:

SQL>SELECT * FROM dba_temp_free_space;

 

TABLESPACE_NAME TABLESPACE_SIZE ALLOCATED_SPACEFREE_SPACE

----------------------------------------------------- --------------------------- -------------------

LMTEMP 250609664101048576 149561088

Which two statementscorrectly interpret the output? (Choose two.)

A. FREE_SPACE indicates only the space that is currentlyunallocated.

B. ALLOCATED_SPACE indicates only the space currentlyallocated and in use.

C. FREE_SPACE indicates only the space that is currentlyallocated and available for reuse.

D. ALLOCATED_SPACE indicates both thespace currently allocated and used, and the space that is available for reuse.

E. FREE_SPACE indicates both the spacethat is currently allocated and available for reuse, and the space that iscurrently unallocated.

 

QUESTION NO:571

Identify the threepredefined server-generated alerts. (Choose three.)

识别3种预定义的服务器产生的告警。

A. Drop User

B. Tablespace Space Usage

C. Resumable Session Suspended

D. Recovery Area Low On Free Space

E. SYSTEM Tablespace Size Increment

 

QUESTION NO:572

Which three actions arerequired to configure the Flashback Database? (Choose three.)配置闪回数据库的3所需要的3个动作？

A. set Flash Recovery Area

B. enable Flashback logging

C. create FLASHBACK tablespace

D. start the database in the ARCHIVELOGmode

E. start the database in the NOARCHIVELOG mode

 

QUESTION NO:573

View the Exhibit andexamine the Data Pump architecture.

 

Identify the numberedcomponents.

 

A. 1 - Oracle Loader, 2 - Oracle DataPump, 3 - Direct Path API

B. 1 - Oracle Data Pump, 2 - Direct Path API, 3 - OracleLoader

C. 1 - Direct Path API, 2 - Oracle Loader, 3 - Oracle DataPump

D. 1 - Oracle Loader, 2 - Direct Path API, 3 - Oracle DataPump

 

QUESTION NO:574

You executed thefollowing command to drop a user:

DROP USER scott CASCADE;

Which two statementsregarding the above command are correct? (Choose two.)

A. All the objects of scott are moved to the Recycle Bin.

B. Any objects in the Recycle Binbelonging to scott are purged.

C. All the objects owned by scott arepermanently dropped from the database.

D. All the objects of scott in the Recycle Bin must bepurged before executing the DROP command.

E. Any objects in the Recycle Bin belonging to scott willnot be affected by the above DROP command.

 

Explanation:

QUESTION NO:575

Your production databaseis running in archivelog mode and you are using recovery manager (RMAN) withrecovery catalog to perform the database backup at regular intervals. When you attemptto restart the database instance after a regular maintenance task on Sunday,the database fails to open displaying the message that the data file belongingto the users tablespace

are corrupted.

The steps to recover thedamaged data files are follows:

1. Mount the database

2. Open the database

3. Recover the data file

4. Restore the data file

5. Make the data fileoffline

6. Make the data fileonline

你的生产库运行在归档模式下，你正在使用recovery RMAN（用recovery catalog）去执行数据库备份（按照有规律的间隔）。当你尝试去重启数据库实例（在星期天，常规维护任务中），数据库失败打开显示的消息（数据文件属于用户表空间故障）。

恢复破坏的数据文件的步骤：

 

Which option identifiesthe correct sequence that you must use to recover the data files?

A. 2, 4, 3

B. 1, 4, 3, 2

C. 2, 5, 4, 3, 6

D. 5, 2, 4, 3, 6

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

 

Explanation:

http://ss64.com/ora/rman_recover.html

Steps forMedia Recovery:

1. Mount or open thedatabase.

Mount the database whenperforming whole database recovery, or open the database when

performing onlinetablespace recovery.

2. To perform incompleterecovery,

use the SET UNTILcommand to specify the time,

SCN, or log sequencenumber at which recovery terminates.

Alternatively, specifythe UNTIL clause on the RESTORE and RECOVER commands.

3. Restore the necessaryfiles with the RESTORE command.

4. Recover the datafileswith the RECOVER command.

5. Place the database inits normal state.

For example, open it orbring recovered tablespaces online.

Restore andrecover a datafile

 

QUESTION NO:576

 

You want to perform anRMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation? (Choose two).你想执行一个RMAN备份作为一个副本。哪两个因素是你要考虑的，当执行这个备份操作时。

A. The backup as copy can only be takento disk

B. The backup as copy can only be taken to tape

C. Backup can be performed only when the instance is shutdown

D. Backup will constitute all used andunused blocks in the database

 

Explanation:

QUESTION NO:577

In your database, theflash recovery area (FRA) is configured as the default for RMAN backups.

You executed thefollowing commands to configure the settings in RMAN:

Which statement is trueabout the outcome?

 

在你的数据库中，FRA被配置作为默认或RMAN备份。

你执行下列命令去配置RMAN的设置，哪个语句是正确的，关于输出？

A. Only one channel is allocated and the backup iscreated in the flash recovery area

B. Only one channel is allocated and the backup is createdin the destination specified for channel 1

C. Two channels are allocated and backup sets are created inthe destinations specified for channels 1 and 2

D. Three channels are allocated and backup sets are createdin the destinations specified for channels 1, 2, and FRA

 

Explanation:

http://download.oracle.com/docs/cd/B19306_01/backup.102/b14192/setup004.htm#i1017890

 

ConfiguringDisk Devices and Channels:

RMAN channels (connectionsto server sessions on the target database) perform all RMAN tasks.

By default, RMANallocates one disk channel for all operations. The following command

configures RMAN to writedisk backups to the /backup directory (refer to "Backing Up Database

Files and Archived Logswith RMAN").:

CONFIGURE CHANNEL DEVICETYPE DISK FORMAT '/backup/ora_df%t_s%s_s%p';

The format specifier %tis replaced with a four byte time stamp, %s with the backup set number,

and %p with the backuppiece number.

You can also configurean Automatic Storage Management disk group as your destination, as in

the following example:

CONFIGURE CHANNEL DEVICETYPE DISK FORMAT '+dgroup1';

 

QUESTION NO:578

 

You are using recovery Manager (RMAN) with a recovery catalog to backup up yourproduction  database. The backups and thearchived redo log files are copied to a tape drive on a daily basis.

The database was open and transactions were recorded inthe redo logs. Because of fire in the  buildingyou lost your servers having the production database and the recovery catalogdatabase.

The archive log files generated after the last backup areintact on one of the remote locations.

While performing a disaster recovery of the productiondatabase what is the next step that you  mustperform after restoring the data files and applying archived redo logs?

你正在使用RMAN（用recoverycatalog）去备份你的生产库。备份和归档重做日志文件copy到磁带驱动器（在一个基本的basis）。数据库打开和事务记录在重做日志中。因为建筑物火灾你丢失了你的服务器（生产库和recovery catalog 数据库）。归档日志文件产生（最后一次备份之后，完整无缺的存储在远端）。当执行一个生产库的灾难恢复时（还原数据文件和应用归档重做日志文件之后，你必须执行的下一步是）

A. Open the database in NORMAL mode

B. Open the database in read-only mode

C. Open the database in RESTRICTED mode

D. Open the database with the RESETLOGSoption

 

Explanation:

QUESTION NO:579

View the exhibit andexamine the output.

Which statement can bean inference from the output?

Exhibit:

A. The FRA disk group has anasynchronous I/O bottleneck

B. The least number of I/Os are performed on the last datafile in the list

C. The number of times that the backup or restore processdirected the OS to wait until an I/O was

complete is the highestfor the last data file in the list

D. The number of times that the backup or restore processmade an OS call to poll for I/O

completion inNonblocking mode is the least for the FRA disk group

 

Explanation:

 

NO EXHIBIT - ANSWERimpossible / A) is set as placeholder

Oracle Press1Z0-053 Exam Guide, Chapter 8:Monitoring and Tuning RMAN

MonitoringAsynchronous I/O

To monitor asynchronousI/O operations, you use the dynamic performance view

V$BACKUP_ASYNC_IO. Thekey columns to watch are the following:

- IO_COUNT: Number ofI/Os performed on the file

- LONG_WAITS: Number oftimes the backup or restore process had to tell the OS to wait for the

I/O to complete

- SHORT_WAIT_TIME_TOTAL:Total time, in hundredths of a second, taken for

nonblockingpolling forI/O completion

The largest ratio ofLONG_WAITS to IO_COUNT is a likely bottleneck in the backup process.

SHORT_WAIT_TIME_TOTALand LONG_WAIT_TIME_TOTAL are also indicators of a bottleneck

if they are nonzero.

For these two files, youmay consider increasing the multiplexing to decrease or eliminate the wait

times when backing themup.

Exam Tip:

If you are usingsynchronous I/O but you have set BACKUP_DISK_IO_SLAVES to TRUE, then

the I/O performance ismonitored in V$BACKUP_ASYNC_IO.

 

 

QUESTION NO:580

Your database interfaceis running. A user SCOTT starts a SQL *Plus session, and issues the followingquery:

SQL> SELECT *FROM sales;

Which process wouldretrieve the result from the database and return it to the client program?

A. User process

B. Server process

C. System Monitor (SMON)

D. Process Monitor (PMON)

E. Checkpoint process (CKPT)

 

Explanation:

QUESTION NO:581

You observed thefollowing output for a user session:

 

What do you infer fromthe preceding output?

A. Resumable set for session with sid18

B. The user session has entered into a deadlock

C. The database instance is enabled to use asynchronouscommit

D. The threshold warning limit is exceeded for thetablespace that is used by the user session

 

Explanation:QUESTION NO: 582

The database isconfigured in ARCHIVELOG mode and regular complete database backups are taken.The loss of which two  types of files mayrequire a recovery with the RESETLOGS option?(Choose two)

 

A. Control files

B. Password files

C. Inactive online redolog file

D. Archived log files required to perform recovery

E. Newly createdtablespace which is not backed up

 

QUESTION NO:583

Multiple RMAN sessionsare connected to the database instance.

Examine the followingoutput when backup commands are running in server sessions:

What could have helpedyou to correlate server sessions with channels?

A. Implement RMAN multiplexing

B. Set the DEBUG ON in the RMAN script

C. Specify the command ID in the RMANscript

D. Use a tag with the RMAN BACKUP command

 

Explanation:QUESTION NO: 584

Examine the followingscenario:

The target databaseinstance is running. The most recent backup available for the target database wastaken two days ago. Log files switches have occurred in last two days. Thetarget database is duplicated on the same host, using the Recovery Manager(RMAN) duplicate command as follows:

RMAN> RUN

{

ALLOCATE AUXILIARYCHANNEL aux 1 DEVICE TYPE DISK;

DUPLICATE TARGETDATABASE TO auxdb;

}

Which statement is trueabout the duplicate database in this scenario?

A. It contains data tillthe last backup

B. It contains all datafrom target database until the current time

C. It contains all datafrom only the committed transactions in the target database

D. It contains all data except that which is used by thetransactions in the current online redo file of target database

 

http://download.oracle.com/docs/cd/E11882_01/backup.112/e10643/rcmsynta020.htm#RCMRF12

6 For backup-basedduplication of databases in ARCHIVELOG mode, RMAN recovers by default

up to the last archivedredo log generated at the time the command was executed, or until a time

specified with a SETUNTIL clause.

 

http://download.oracle.com/docs/cd/B10500_01/server.920/a96566/rcmdupdb.htm#441820

During duplication, RMANmust perform incomplete recovery because the online redo logs in the

target are not backed upand cannot be applied to the duplicate database. The farthest that RMAN

can go in recovery ofthe duplicate database is the most recent redo log archived by the target

database.

QUESTION NO:583

Examine the followingcommand:

SQL> ALTERTABLE booking SHRINK SPACE COMPACT;

Which activity isperformed when the preceding command is executed?

A. The shrink operation touches every block in the BOOKINGtable

B. The high-water mark (HWM) for the BOOKING table isshifted from its original position

C. The progress of the shrink operationis saved in the bitmap blocks of the BOOKING table

D. The data manipulation language (DML) triggers on the BOOKINGtable are executed because the shrink operation is internally handled by theINSERT/DELETE operation

 

Explanation:

http://www.oracle-base.com/articles/10g/SpaceObjectTransactionManagement10g.php

Based on therecommendations from the segment advisor you can recover space from specific  objects using one of the variations of theALTER TABLE ... SHRINK SPACE commands. The shrink is accomplished by movingrows between blocks, hence the requirement for row movement

to be enabled for theshrink to take place. This can cause problem with ROWID based triggers.

The shrinking process isonly available for objects in tablespaces with automatic segment-space managementenabled. The COMPACT option allows the shrink operation to be broken into two

stages. First the rowsare moved using the COMPACT option but the HWM is not adjusted so no

parsed SQL statementsare invalidated. The HWM can be adjusted at a later date by reissuing the

statement without theCOMPACT option. At this point any depenedant SQL statements will need

to be reparsed.

http://books.google.com/books?id=0iwrL9P25Z0C&pg=PA190&lpg=PA190&dq=shrink+operation+

is+saved+in +the+bitmap

+blocks&source=bl&ots=MGoTq9AT0m&sig=y0EgXfO2MZnWlOZTgKXo5CDbFJw&hl=en&ei=L0g

ATdqaNsG1

nAfsrZjlDQ&sa=X&oi=book_result&ct=result&resnum=4&ved=0CCcQ6AEwAw#v=onepage&q=shr

 

ink%20operation%20is%20saved%20in%20the%20bitmap%20blocks&f=false A shrinkoperation

may cause ROWIDs tochange in heap-organized segments. So row movement has to be enabled

to circumvent this issuebefore a shrink operation. To enable row movement, use the {CREATE|

ALTER} TABLE …ENABLE ROWmovement command. A shrink operation consists of thw

phases, compaction andadjusting the HWM to release the unused space. If the COMPACT option

is used, only the firstphase is executed. The shrink results are saved in bitmap blocks of the

corresponding segment,Oracle 10g will remember what has been done. If CASCADE is specified,

the shrinking cascadesto all dependent segments that support a shrink operation. During the

COMPACT phase,individual rowlocks are held. Concurrent DML operations serialize on thes

rowlocks and DMLoperations can block the compaction progress. When the HWM is adjusted in

the second phase, theobject is locked in exclusive mode for a short duration.

 

QUESTION NO:584

The RECYCLEBIN parameteris set to ON for your database. You drop a table, PRODUCTS, from the SCOTTschema.Which two statements are true regarding the outcome of this action?(Choose two)

 

A. All the related indexes and views are automaticallydropped

B. The flashback drop feature can recover only the tablestructure

C. Only the related indexes are droppedwhereas views are invalidated

D. The flashback drop feature canrecover both the table structure and its data

 

Explanation:

QUESTION NO:585

Which two clientrequests are captured during database replay Capture? (Choose two)

A. Flashback queries

B. Shared server requests

C. Login and logoff activities ofsessions

D. Direct path load of data from external files by usingutilities such as SQL *loader

E. Data definition language (DDL) anddata manipulation language (DML) operations

 

Explanation:

 

http://download.oracle.com/docs/cd/B28359_01/server.111/e12253/dbr_capture.htm#CACICAAC

WorkloadCapture Restrictions

The following types ofclient requests are NOT captured in a workload:

- Direct path load ofdata from external files using utilities such as SQL*Loader

- Shared server requests(Oracle MTS)

- Oracle Streams

- Advanced replicationstreams

- Non-PL/SQL basedAdvanced Queuing (AQ)

- Flashback queries

- Oracle Call Interface(OCI) based object navigations

- Non SQL-based objectaccess

- Distributedtransactions (any distributed transactions that are captured will be replayedas local transactions)

QUESTION NO:586

You plan to execute thefollowing command to perform a Flashback Database operation in your  database:

SQL> FLASHBACKDATABASE TO TIMESTAMP (SYSDATE -5/24);

Which two statements aretrue about this? (Choose two)

A. The database must have multiplexed redo log files

B. The database must be in the MOUNTstate to execute the command

C. The database must be in the NOMOUNT state to execute thecommand

D. The database must be opened in RESTRICTED mode beforethis operation

E. The database must be opened with theRESETLOGS option after the flashback operation

 

 

Explanation:

http://www.di.unipi.it/~ghelli/didattica/bdldoc/B19306_01/server.102/b14200/statements_901

1.htm

Use the FLASHBACKDATABASE statement to return the database to a past time or system

change number

(SCN). This statement providesa fast alternative to performing incomplete database recovery.

Following a FLASHBACKDATABASE operation, in order to have write access to the flashed back

 

database, you

must reopen it with anALTER DATABASE OPEN RESETLOGS statement.

http://www.idevelopment.info/data/Oracle/DBA_tips/SQL/SQL_4.shtml

 

QUESTION NO:587

View the Exhibit andexamine the steps that you executed to create a database resource plan.

Subsequently, youexecute the following procedure which results in an error:

SQL> EXECUTE dbms_resources_manager.validate_pending_area( );

What could be thereason?

Exhibit:

A. The pending area is automatically submitted after theplan creation

B. The procedure must be executed before creating theresources plan directive

C. The SYS_GROUP resource consumer group is not included inthe resource plan directive

D. The OTHER_GROUPS resources consumergroup is not included in the resource plan directive

 

Explanation:

ExhibitReference: 1Z0-033, 9i Performance Tuning, Question/Answer

SYBEX Oracle1Z0-053 Study Guide, Chapter 11:Managing Database Resources

The validation processverifies that any changes in the pending area will not result in a violation of

any of the rules, suchas the following:

There must be a plandirective for the OTHER_GROUPS group to allocate resources for sessions

not identified in theactive plan.

Oracle Press1Z0-053 Exam Guide, Chapter 12:Disk Space and Resource Management

Remember that your planmust include OTHER_GROUPS so that users other than those in the

consumer groups assignedto the [PLAN NAME] plan will have some resources available when

the plan is activated.Therefore, create one more plan directives for the [PLAN NAME] plan that

includes OTHER_GROUPS.

 

QUESTION NO:588

Examine the followingcommand that is used to duplicate a database on the same host:

RMAN> RUN

{

ALLOCATE AUXILIARY CHANNEL, aux 1 DEVICE TYPE DISK;

DUPLICATE TARGET DATABASE TO auxdb SKIP READONLY; \ }

Which two statementsdescribe the effect after the database is duplicated successfully? (Choose two)

A. The data files of the read-only tablespaces in thetarget database are not duplicated只读表空间的数据文件（在target数据库中）不被复制

B. The read-only tablespaces in the target databaseare still defined in new the database只读表空间仍然会定义在新的数据库中。

C. The read-only tablespaces in the target database arechanged to online after duplication

D. The data files of the read-only tablespaces in the targetdatabase get duplicated

E. The read-only tablespaces in the target database are notdefined in the new database

 

Explanation:

QUESTION NO:589

You need to perform ablock media recovery on the tools01.dbf data file in the SALES database byusing Recovery Manager (RMAN).

你需要执行一个块介质恢复在tools.dbf数据文件（sales数据库），通过使用recovery manager(RMAN).

Which two are theprerequisites to perform this operation? (Choose two)执行这个操作的两个先决条件：

A. You must configure block change tracking file

B. You must have first level 1 backups for RMAN to restoreblocks

C. You must ensure that the SALESdatabase is mounted or open

D. You must have full or level 0backups for RMAN to restore blocks

E. You must take the tools01.dbf data file offline beforeyou start a block media recovery

 

Explanation:

QUESTION NO:590

On Friday at 11:30 amyou decided to flash back the database because of a user error that occurred at8:30 am. Which option must you use to check whether a flashback operation can  recover the database to the specified time?在周5上午 11：30，你决定闪回数据库，因为一个用户错误，发生在上午8:30.你必须使用哪个选项检查，是否闪回操作可以恢复数据库到一个指定的时间？

A. Check the alert log file

B. Query the V$FLASHBACK_DATABASE_LOG view 查询

C. Query the V$RECOVERY_FILE_DEST_SIZE view

D. Query the V$FLASHBACK_DATABASE_STAT view

E. Check the value assigned for the UNDO_RETENTION parameter

 

Explanation:

selectoldest_flashback_scn, oldest_flashback_time

from

v$flashback_database_log;

SYBEX Oracle1Z0-053 Study Guide, Chapter 9:Understanding Flashback Technology

Query theV$FLASHBACK_DATABASE_LOG to determine the amount of space required in the

recovery area to supportthe flashback activity generated by changes in the database.

The values in theOLDEST_FLASHBACK_SCN and OLDEST_FLASHBACK_TIME columns give

you informationregarding how far back you can use Flashback Database.

Oracle Press1Z0-053 Exam Guide, Chapter 9:Configuring and Using Flashback

You can determine howfar back you can flashback the database by querying the V

$FLASHBACK_DATABASE_LOGview. The amount of flashback data retained in the database is

controlled by theinitialization parameter and the size of the flash recovery area.

 

 

QUESTION NO:591

While performing aregular check on your recovery catalog you realized that the catalog database isrunning out of space and you do not have options to increase the space.However, you have another database where more space is available and you wantto move your existing recovery catalog to this database.

The options that can beconsidered while moving the recovery catalog are as follows:

1. Using one of the Oracle expdp utilities to export thecatalog data使用expdp工具中的一个，去导出catalog数据

2. Creating a recovery catalog user and granting thenecessary privileges in the other database，创建一个恢复catalog用户，授权必要的权限在其他数据库中

3. Creating the recoverycatalog using the CREATE CATALOG command

4. Using the corresponding impdp utility to import thecatalog data into the other database 使用对应的impdp工具去导入catalog数据到其他库

5. Registering thetarget database in the new catalog database using the REGISTER DATABASE

command Identify theoption with the correct sequence for moving the recovery catalog.

当执行一个有规律的检查（在你的恢复catalog上）你认识到catalog数据库运行，空间不足。你没有选择去增加空间。然而，你有另外一个数据库（更多地空间可用），你想移动你已经存在的recovery catalog到这个数据库中。

 

A. 2, 3, 5

B. 1, 2, 4

C. 1, 2, 4, 5

D. 1, 2, 3, 4, 5

 

Explanation:

http://books.google.com/books?id=Dmzzjq0izZwC&pg=PA127&lpg=PA127&dq=how+to+move+re

covery +catalog%

3F&source=bl&ots=OOoX8UCzv8&sig=ULFjuNpAUTchjY7PFqybfh3rncE&hl=en&ei=M7DRTKKbII

G0lQfVhMi1DA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBMQ6AEwAA#v=onepage&

q=how%20to%20move%20recovery%20catalog%3F&f=false As you can with any database, you

can use the Oracle DataPump export and import utilities expdp and impdp to create logical

backups of the recoverycatalog. You can use this logical backup to move the recovery catalog to

another database. Followthese general steps to move a recovery catalog to another database:

1. Use an export utilityto copy the recovery catalog schema to an export dump file.

2. Create the recoverycatalog owner on the target catalog database with the appropriate

permissions; see “Createthe Recovery Catalog Owner” earlier in this chapter.

3. Use the correspondingimport utility to copy the recovery catalog schema to the target catalog

database.

The next time you launchRMAN, you connect to the same target database but a different recovery

Oracle 1z0-053 Exam

"Pass Any Exam.Any Time." - www.actualtests.com 296

catalog database.However, even though the recovery catalog database name is different, the

target database'smetadata is identical to the metadata in the previous recovery catalog.

You can alsouse transportable tablespaces to move a recovery catalog schema from one

database to

another.

You do not need to runan RMAN CREATE CATALOG command in this scenario; the tables,

columns, and views arealready in place from the source database.

 

QUESTION NO:592

You realize that thecontrol file is damaged in your production database. After restoring thecontrol file from autobackup, what is the next step that you must do to proceedwith the database recovery?你认识到你生产库中的控制文件已经被损坏。从autobackup还原控制文件以后，你必须如何去处理下一步的数据库恢复？

A. Mount the database

B. Open the database in NORMAL mode

C. Open the database in RESTRICTED mode

D. Open the database with the RESETLOGS option

 

Explanation:

duh..

Oracle Press1Z0-053 Exam Guide, Chapter 5:Recovering Using RMAN Backups

Restoringthe Control File from the Autobackup

Restoring the controlfile from an autobackup is similar to the steps you use to restore an SPFILE

from an

autobackup.

RMAN> startupnomount;

RMAN> restorecontrolfile from autobackup;

RMAN>alter database mount;

RMAN> recoverdatabase;

RMAN> alter databaseopen resetlogs;

Note that since there isno control file, you have to open the database with NOMOUNT and then

restore the controlfile. After you mount the database, you must recover the database, because the

backup control filecontains information about an older version of the database. For the same

reason, you must openthe database with RESETLOGS. RMAN restores the control file to all

locations specified bythe initialization parameter CONTROL_FILES. If one or more of those

locations are still notavailable, you will have to edit the CONTROL_FILES parameter to specify

alternative locations ortemporarily restore the control file to a different location:

RMAN> restorecontrolfile to '/u06/oradata/rest_cf.dbf' from autobackup;

QUESTION NO:593

What two are theprerequisites for enabling Flashback Database? (Choose two)启用flashback数据库的先决条件是？

A. The database must be in ARCHIVELOGmode数据库处于归档模式

B. The database must be in MOUNTEXCLUSIVE mode数据库IXUS处于绑定 exclusive模式

C. The database must be opened in RESTRICTED mode

D. The database instance must be started in the NOMOUNTstate

E. The database instance must have the keep buffer pooldefined

 

Explanation:

QUESTION NO:594

Identify the channelsettings that can be performed using the CONFIGURE CHANNEL or ALLOCATE CHANNEL commands inRMAN (choose all that apply)使用configurechannel or allocate channel命令（在RMAN中），识别通道设置

A. Limiting the input/output (I/O)bandwidth consumption限制IO带宽消耗

B. Specifying the size of backup sets and backup pieces

C. Specifying vendor-specificinformation for a media manager指定独特的供应商为介质管理。

D. Specifying the parallelism for backup and restoreoperations

 

Explanation:

Section: Backup, Recovery & Recovery Manager (RMAN)

Whether you allocatechannels manually or automatically, you can use channel control commands

and options to do thefollowing: Control the operating system resources RMAN uses when

performing RMANoperations. Affect the degree of parallelism for a backup or restore (in

conjunction with theFILESPERSET parameter of the BACKUP command) Set limits on I/O

bandwidth consumption inkilobytes, megabytes, or gigabytes (ALLOCATE CHANNEL ...RATE,

CONFIGURE CHANNEL ...RATE)-check Set limits on the size of backup pieces (the

MAXPIECESIZE parameterspecified on the CONFIGURE CHANNEL and ALLOCATE CHANNEL

commands)- half ofanswer B

Set limits on the sizeof backup sets (the MAXSETSIZE parameter specified on the BACKUP and

CONFIGURE commands)

- Not in the CONFIGURECHANNEL and ALLOCATE CHANNEL (B is wrong) Set limits on the

number of concurrentlyopen files (ALLOCATE CHANNEL ... MAXOPENFILES, CONFIGURE

CHANNEL ...MAXOPENFILES) Send vendor-specific commands to the media manager

(SEND) Specifyvendor-specific parameters for the media manager

(ALLOCATE CHANNEL ...PARMS, CONFIGURE CHANNEL ... PARMS)-check Specify which

instance performs theoperation (ALLOCATE CHANNEL ... CONNECT, CONFIGURE CHANNEL

... CONNECT)

Oracle Press1Z0-053 Exam Guide, Chapter 8:Monitoring and Tuning RMAN:

You can further tuneyour RMAN backup performance by tuning individual channels with the

CONFIGURE CHANNEL andALLOCATE CHANNEL commands. Each CHANNEL command

accepts the followingparameters:

- MAXPIECESIZE: Themaximum size of a backup piece

- RATE: The number ofbytes per second read by RMAN on the channel

- MAXOPENFILES: Themaximum number of input files that a channel can have open at a given

time The MAXPIECESIZEparameter is useful when you back up to disk and the underlying

operating system limitsthe size of an individual disk file, or when a tape media manager cannot

split a backup pieceacross multiple tapes.

Note that the RATEparameter doesn't improve performance but throttles performance inte tionally

to limit the diskbandwidth available to a channel. This is useful when your RMAN backups must

occur during periods ofpeak activity elsewhere in the database.

MAXOPENFILES wasreviewed in the preceding section, but it is worth revisiting when you want

to optimize theperformance of an individual channel. For example, you can use MA OPENFILES

to limit RMAN's use ofoperating system file handles or buffers.

Oracle Press1Z0-053 Exam Guide, Chapter 4:Creating RMAN Backups

References toPARALLELISM were only referenced as CONFIGURE DEVICE TYPE DISK

PARALLELISM... Bydefault, any backups to disk default to a backupset backup type:

CONFIGURE DEVICE TYPEDISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default.