Free Download Oracle 1Z0-053 VCE Test Engine Full Version Now (401-410)

QUESTION 401
Examine the following PL/SQL block:
SET SERVEROUTPUT ON SET LONG 10000 ECLARE report clob;
BEGIN report := DBMS_SPM.EVOLVE_SQL_PLAN_BASELINE();
DBMS_OUTPUT.PUT_LINE(report);
END;
Which statement describes the effect of the execution of the above PL/SQL block?

A.    The plan baselines are verified with the SQL profiles.
B.    All fixed plan baselines are converted into nonfixed plan baselines.
C.    All the nonaccepted SQL profiles are accepted into the plan baseline.
D.    The nonaccepted plans in the SQL Management Base are verified with the existing plan baselines.

Answer: D

QUESTION 402
In which two aspects does hot patching differ from conventional patching? (Choose two.)

A.    It consumes more memory compared with conventional patching.
B.    It can be installed and uninstalled via OPatch unlike conventional patching.
C.    It takes more time to install or uninstall compared with conventional patching.
D.    It does not require down time to apply or remove unlike conventional patching.
E.    It is not persistent across instance startup and shutdown unlike conventional patching.

Answer: AD

QUESTION 403
Which statement about the enabling of table compression in Oracle Database 11g is true?

A.    Compression can be enabled at the table, tablespace, or partition level for direct loads only.
B.    Compression can be enabled only at the table level for both direct loads and conventional DML.
C.    Compression can be enabled at the table, tablespace, or partition level for conventional DML only.
D.    Compression can be enabled at the table, tablespace, or partition level for both direct loads and
conventional DML.

Answer: D

QUESTION 404
You are tuning RMAN to optimize performance. You want tape I/O to be asynchronous when you perform tape backups. Which action should you take?

A.    Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE.
B.    Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE.
C.    Use compression when performing tape backups.
D.    Configure multiple SBT channels.

Answer: B

QUESTION 405
You specify a nonzero value for the MEMORY_TARGET initialization parameter, but do not set the PGA_AGGREGATE_TARGET or the SGA_TARGET parameters. You restart your database instance. Which statement about the result is true?

A.    The database instance starts, and Oracle sets the default value of SGA_TARGET to the same value
as SGA_MAX_SIZE.
B.    The database instance starts, and Oracle automatically tunes memory and allocates 60 percent to
the SGA and 40 percent to the PGA.
C.    The database instance starts, but Automatic Memory Management is disabled.
D.    The database instance will not start because you did not specify the PGA_AGGREGATE_TARGET
or SGA_TARGET parameter.

Answer: B

QUESTION 406
Which statements are true regarding the Query Result Cache? (Choose all that apply.)

A.    It can be set at the system, session, or table level.
B.    It is used only across statements in the same session.
C.    It can store the results from normal as well as flashback queries.
D.    It can store the results of queries based on normal, temporary, and dictionary tables.

Answer: AC

QUESTION 407
You want to analyze a SQL Tuning Set (STS) using SQL Performance Analyzer in a test database. Which two statements are true regarding the activities performed during the test execution of SQLs in a SQL Tuning Set? (Choose two.)

A.    Every SQL statement in the STS is considered only once for execution.
B.    The SQL statements in the STS are executed concurrently to produce the execution plan and execution
statistics.
C.    The execution plan and execution statistics are computed for each SQL statement in the STS.
D.    The effects of DDL and DML are considered to produce the execution plan and execution statistics.

Answer: AC

QUESTION 408
You want to enable resumable space allocation at the instance level. Which two actions would enable resumable space allocation at the instance level? (Choose two.)

A.    issuing the ALTER SYSTEM ENABLE RESUMABLE; statement
B.    issuing the ALTER SESSION ENABLE RESUMABLE; statement
C.    modifying the RESUMABLE_TIMEOUT initialization parameter to a nonzero value
D.    issuing the ALTER SYSTEM SET RESUMABLE_TIMEOUT=<nonzero value>; statement

Answer: CD

QUESTION 409
You executed the following commands:
SQL> ALTER SESSION SET OPTIMIZER_USE_PENDING_STATISTICS = false; SQL> EXECUTE DBMS_STATS.SET_TABLE_PREFS(‘SH’, ‘CUSTOMERS’, ‘PUBLISH’,’false’);
SQL> EXECUTE DBMS_STATS.GATHER_TABLE_STATS(‘SH’, ‘CUSTOMERS’);
Which statement is correct regarding the above statistics collection on the SH.CUSTOMERS table in the above session?

A.    The statistics are stored in the pending statistics table in the data dictionary.
B.    The statistics are treated as the current statistics by the optimizer for all sessions.
C.    The statistics are treated as the current statistics by the optimizer for the current sessions only.
D.    The statistics are temporary and used by the optimizer for all sessions until this session terminates.

Answer: A
Explanation:
http://docs.oracle.com/cd/E11882_01/server.112/e41573/stats.htm#PFGRF94725
By default, the optimizer uses the published statistics stored in the data dictionary views. If you want the optimizer to use the newly collected pending statistics, then set the initialization parameter OPTIMIZER_USE_PENDING_STATISTICS to TRUE (the default value is FALSE), and run a workload against the table or schema:
ALTER SESSION SET OPTIMIZER_USE_PENDING_STATISTICS = TRUE;

QUESTION 410
The Database Resource Manager is automatically enabled in the maintenance window that runs the Automated Maintenance Task. What is the reason for this?

A.    to prevent the creation of an excessive number of scheduler job classes
B.    to allow the Automated Maintenance Tasks to use system resources without any restriction
C.    to allow resource sharing only among the Automated Maintenance Tasks in the maintenance window
D.    to prevent the Automated Maintenance Tasks from consuming excessive amounts of system resources

Answer: D

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