OCP 1Z0-053 V12.02: Oracle Database 11g Administration II备考指南

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C. Set the DB_LOCK_CH

ECKSUM parameter to TYPICAL.

D. Set the DB_LOST_WRITE_PROTECT parameter to TYPICAL.

Answer:

53.You want to use RMAN to create compressed backups.

Which statement is true about the compression algorithms that RMAN can use?

A. The BZIP2 compression algo

rithm consumes more CPU resources than the ZLIB compression

algorithm.

B. The ZLIB compression algorithm consumes more CPU resources than the BZIP2 compression

algorithm.

C. The ZLIB compression algorithm provides maximum compression and produces smaller b

ackups than

the BZIP2 compression algorithm.

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

Answer:

54.Evaluate the following function code:

CREATE FUNCTION get_dept_avg(dept_id NUMBER) RETURN NUMBER RESULT_CACHE

RELIES_ON

(EMPLOYEES) IS avgsal NUMBER(6);

BEGIN

SELECT AVG(SALARY)INTO avgsal

FROM EMPLOYEES

WHERE DEPARTMENT_ID = dept_id;

RETURN avgsal;

END get_dept_avg;

Which statement is true regarding the above function?

A. The cached result becomes invalid when a

ny structural change is done to the EMPLOYEES table.

B. If the function execution results in an unhandled exception, 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 re

sult cache gets

overwritten.

D. If the function is invoked with a different parameter value, the existing result in the result cache gets

overwritten by the latest value.

Answer:

55.Following is the list of locations in random order where oranfstab can be placed.

1./etc/mtab

2.$ORACLE_HOME/dbs/oranfstab

3./etc/oranfstab

What is the sequence in which Direct NFS will search the locations?

A. 1, 2, 3

B. 3, 2, 1

C. 2, 3, 1

D. 1, 3, 2

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Answer:

56.You discover that your Recycle Bin contains two tables with t

he same name, MY_TABLE. You also

have a table named MY_TABLE in your schema. You execute the following statement:

FLASHBACK TABLE my_table TO BEFORE DROP RENAME TO my_table2;

What will be the result of executing this statement?

A. One of the tables is reco

vered from the Recycle Bin using a First In First Out (FIFO) approach.

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

C. Both the tables are recovered from the Recycle Bin with one table renamed to MY_TABL

E2 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.

Answer:

57.Which background process of a database instance, using Automatic Storage Management (ASM),

connects as

a foreground process into the ASM instance?

A. ASMB

B. PMON

C. RBAL

D. SMON

Answer:

58.Which statement is true when Automatic Workload Repository (AWR) baselines are created using

baseline templates?

A. AWR baselines are always created as repeating base

lines.

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

C. AWR baselines are always created with infinite expiration duration.

D. AWR baselines are always created using the Automatic Workload Repository (AWR) retention period

as expiration

duration.

Answer:

59.You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the

entire datafile every time an incremental backup is performed. You decide to enable the block change

tracking feature. Which statement

should you use to enable the block change tracking feature?

A. ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;

B. ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE <path>;

C. ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE <path>;

D. ALTER SYSTEM EN

ABLE BLOCK CHANGE TRACKING;

Answer:

60.For which two situations would you use functionality provided by the Resource Manager? (Choose

two.)

A. setting idle timeout limits on resource plans

B. saving storage space by using compressed backup sets

C. creat

ing jobs that will run automatically at a scheduled time

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181

D. assigning priorities to jobs to manage access to system resources

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

Answer:

61.Which of the follo

wing advisors within the Oracle advisory framework will analyze a single SQL

statement and make recommendations for performance improvement?

A. SQL Repair Advisor

B. SQL Optimizer

C. SQL Access Advisor

D. SQL Tuning Advisor

Answer:

62.You want to conver

t your existing non

ASM files to ASM files for the database PROD. Which method

or command would you use to accomplish this task?

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

Answer:

63.Which method would you use to undo the changes made by a particular transaction without affecting

the changes made by other transactions?

A. point

time recovery

B. execute the ROLLBACK command with transaction number

C. flashback t

he database to before the transaction was committed

D. determine all the necessary undo SQL statements from FLASHBACK_TRANSACTION_QUERY and

use them for recovery

Answer:

64.You performed an incomplete recovery and opened the database with the RESETLOGS

option. The

LOG_ARCHIVE_FORMAT parameter is set to 'ora_%t_%s_%r.log'. Which statement regarding the

archived redo log files, created in an earlier incarnation of the database, is true?

A. The archived redo log files will be overwritten.

B. The archived re

do log files are deleted automatically.

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

D. The archived redo log files are still maintained because the file names are unique.

Answer:

65.An online tablespace, TEST_TBS, is full and

you realize that no server

managed tablespace threshold

alerts were generated for the TEST_TBS tablespace. What could be the reason, if the TEST_TBS

tablespace does not include autoextensible data files?

A. TEST_TBS is a small file tablespace.

B. TEST_TBS

is a bigfile tablespace (BFT).

C. TEST_TBS is the default temporary tablespace.

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181

70.You executed the following SQL statement to shrink the EMPL

OYEES table segment stored in the

EXAMPLE tablespace:

ALTER TABLE employees SHRINK SPACE CASCADE;

Which statement is correct in this scenario?

A. The EMPLOYEES table will be changed to read

only mode during the shrink operation.

B. The indexes created on t

he EMPLOYEES table will need to be rebuilt after the shrink operation is over.

C. The shrink behavior will be cascaded to all dependent segments of the table that support a shrink

operation.

D. Data manipulation language (DML) operations will not be possib

le on the EMPLOYEES table during

the COMPACTION phase of the shrink operation.

Answer:

71.The Automatic Database Diagnostic Monitor (ADDM) analysis runs every 60 minutes on your

database. Your database is facing a series of interrelated problems over a

period of two hours. You need

to ensure that the ADDM analysis is run over a time span of two hours in future. What would you do?

A. Create two custom ADDM tasks.

B. Modify the AWR snapshot time interval to two hours.

C. Create a new scheduler window for a

time period of two hours.

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

Answer:

72.You have 100 segments in the USERS tablespace. You realize that the USERS tablespace is running

low on space.

You can use Seg

ment Advisor to _____.

A. identify the segments that you should shrink

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 is running low on space

Answer:

73.You are using Recovery Manager (RMAN) to perform backups. In which three situations would you

perform a compressed backup? (Choose three.)

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

B. You are making imag

e copies, and you have not enabled tablespace compression.

C. You are using disk

based backups and disk space in your Flash Recovery Area, or other disk

based

backup destinations are limited.

D. You are performing your backups to some device over a network

where reduced network bandwidth is

more important than CPU usage.

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

media costs and archival storage.

Answer:

CDE

74.Immediately after adding a new disk to or

removing an existing disk from an ASM instance, you find

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