NO.1 Which tasks are run automatically as part of the Automated Maintenance
Task by default?
(Choose all that apply.)
A. Segment Advisor
B. SQL
Access Advisor
C. Optimizer statistics gathering
D. Automatic SQL Tuning
Advisor
E. Automatic Database Diagnostics Monitor
Answer:
A,C,D
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NO.2 View the Exhibit and examine the output.
You execute
the following RMAN command to perform the backup operation:
RMAN> RUN
{
ALLOCATE CHANNEL c1 DEVICE TYPE disk MAXOPENFILES 8;
BACKUP DATABASE
FILESPERSET 4;
}
What is the multiplexing level in the preceding backup
process?
A. 4
B. 8
C. 7
D. 0
Answer: A
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Explanation:
Section: Backup, Recovery & Recovery Manager
(RMAN)
The MAXOPENFILES parameter of ALLOCATE CHANNEL or CONFIGURE CHANNEL
defines how many
datafiles RMAN can read from simultaneously.
The basic
multiplexing algorithm is as follows:
-Number of files in each backup
set
This number is the minimum of the FILESPERSET setting and the number of
files read by each
channel.
The FILESPERSET default is 64.
-The level
of multiplexing
This is the number of input files simultaneously read and
then written into the same backup piece.
The level of multiplexing is the
minimum of MAXOPENFILES and the number of files in each backup
set. The
MAXOPENFILES default is 8. Suppose that you back up 12 datafiles with one
channel when
FILEPERSET is set to 4. The level of multiplexing is the lesser
of this number and 8. Thus, the channel
simultaneously writes blocks from 4
datafiles into each backup piece. Now suppose that you back up
50 datafiles
with one channel. The number of files in each backup set is 50. The level of
multiplexing
is the lesser of this number and 8. Thus, the channel
simultaneously writes blocks from 8 datafiles
into each backup
piece.
http://www.filibeto.org/sun/lib/nonsun/oracle/11.1.0.6.0/B28359_01_200708/backup.111/b2
8270/rcmtunin.htm
Tuning RMAN Performance.
NO.3 What is the result of this command?
RMAN> Report need backup days 3;
A. Lists all datafiles created in the
last three days that are not backed up.
B. Lists all datafiles not
recoverable based on the current retention criteria.
C. Lists all datafiles
not backed up in the last three days. The datafile is not recoverable.
D.
Lists all datafiles that need to be backed up due to unrecoverable
operations.
E. Lists all datafiles not backed up in the last three days. It
does not imply that the datafile is not
recoverable.
Answer:
E
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NO.4 Which of the following information will be
gathered by the SQL Test Case Builder for the
problems pertaining to
SQL-related problems? (Choose all that apply.)
A. ADR diagnostic files
B.
all the optimizer statistics
C. initialization parameter settings
D.
PL/SQL functions, procedures, and packages
E. the table and index definitions
and actual data
Answer: B,C,E
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NO.5 What two are the
prerequisites for enabling Flashback Database? (Choose two)
A. The database
must be in ARCHIVELOG mode
B. The database must be in MOUNT EXCLUSIVE
mode
C. The database must be opened in RESTRICTED mode
D. The database
instance must be started in the NOMOUNT state
E. The database instance must
have the keep buffer pool defined
Answer: A,B
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NO.6 View the
Exhibit to examine the parameters set for your database instance.
You execute
the following command to perform I/O calibration after the declaration of bind
variables
in the session that are used in the command: SQL> EXECUTE
dbms_resource_manager.calibrate_io(
num_physical_disks=>1,
-max_latency=>50, -max_iops=>:max_iops, -max_mbps=>:max_mbps,
-
actual_latency=>:actual_latency);
Which statement describes the
consequence?
A. The command produces an error.
B. The calibration process
runs successfully and populates all the bind variables.
C. The calibration
process runs successfully but the latency time is not computed.
D. The
calibration process runs successfully but only the latency time is
computed.
Answer: A
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NO.7 Using Oracle Enterprise Manager to
set SGA pool values manually, for which of the
following pools does Oracle EM
offer advice to set the value appropriately? (Choose all that apply.)
A.
DB_CACHE_SIZE
B. SHARED_POOL_SIZE
C. LARGE_POOL_SIZE
D.
JAVA_POOL_SIZE
E. SGA_MAX_SIZE
F. SORT_AREA_SIZE
Answer:
A,B
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NO.8 To view the results of a
manual SQL Tuning Advisor task, which steps should the DBA take?
A. From the
Advisor Central home page, select the tuning task from the Advisor Tasks
section.
B. From Advisor Central, choose SQL Advisors, SQL Tuning Advisors,
Manual Tuning Task Results.
C. From Advisor Central, choose SQL Advisors,
Manual SQL Tuning Advisors, Tuning
Task Results.
D. Either B or
C.
Answer: A
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