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Latest update Oracle 1Z0-062 exam questions and answers online practice test

QUESTION 1
To enable the Database Smart Flash Cache, you configure the following parameters:
DB_FLASH_CACHE_FILE = `/dev/flash_device_1\\’ , `/dev/flash_device_2\\’ DB_FLASH_CACHE_SIZE=64G
What is the result when you start up the database instance?
A. It results in an error because these parameter settings are invalid.
B. One 64G flash cache file will be used.
C. Two 64G flash cache files will be used.
D. Two 32G flash cache files will be used.
Correct Answer: A

 

QUESTION 2
Which three statements are true about the SQL Tuning Advisor? (Choose three.)
A. It can get input from the Automatic Workload Repository (AWR).
B. It can run while a maintenance window is open.
C. It can recommend creation of SQL plan baselines.
D. It can rebuild indexes.
E. It prevents regression of SQL statement performance.
F. It can get input from SQL Scripts in flat files.
Correct Answer: ABE
Reference: https://docs.oracle.com/database/121/TGSQL/tgsql_sqltune.htm#TGSQL543

 

QUESTION 3
In your Database, the TBS PERCENT USED parameter is set to 60 and the TBS PERCENT FREE parameter is set to
20.
Which two storage-tiering actions might be automated when using Information Lifecycle Management (ILM) to automate
data movement? (Choose two.)
A. The movement of all segments to a target tablespace with a higher degree of compression, on a different storage tier,
when the source tablespace exceeds TBS PERCENT USED
B. Setting the target tablespace to read-only
C. The movement of some segments to a target tablespace with a higher degree of compression, on a different storage
tier, when the source tablespace exceeds TBS PERCENT USED
D. Setting the target tablespace offline
E. The movement of some blocks to a target tablespace with a lower degree of compression, on a different storage tier,
when the source tablespace exceeds TBS PERCENT USED
Correct Answer: BC
The value for TBS_PERCENT_USED specifies the percentage of the tablespace quota when a tablespace is
considered full. The value for TBS_PERCENT_FREE specifies the targeted free percentage for the tablespace. When
the percentage of the tablespace quota reaches the value of TBS_PERCENT_USED, ADO begins to move data so that
percent free of the tablespace quota approaches the value of TBS_PERCENT_FREE. This action by ADO is a best
effort and not a guarantee.

 

QUESTION 4
Examine the parameters for a database instance: Your database has three undo tablespaces and the default undo
tablespace is not auto extensible. Resumable space allocation is not enabled for any sessions in the database instance

What is the effect on new transactions when all undo space in the default undo tablespace is in use by active
transactions?
A. Transactions write they undo in the SYSTEM undo segment.
B. Transactions fail.
C. Transactions wait until space becomes available in UNDOTBS1.
D. Transactions write they undo in a temporary tablespace.
Correct Answer: B
References: https://docs.oracle.com/cd/B19306_01/server.102/b14231/undo.htm (undo retention)

 

QUESTION 5
Which three file types are stored in the Fast Recovery Area by default in a traditional nonOMF file system? (Choose
three.)
A. online redo log files
B. parameter file
C. multiplexed copies of the current control file
D. archived log files
E. Flashback Data Archive files
F. Flashback logs
Correct Answer: ADF

 

QUESTION 6
On your Oracle 12c database, you Issue the following commands to create indexes
SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customers_id, sales_rep_id) INVISIBLE;
SQL> CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customers_id, sales_rep_id);
Which two statements are correct? (Choose two.)
A. Both the indexes are created; however, only the ORD_COSTOMER index is visible.
B. The optimizer evaluates index access from both the Indexes before deciding on which index to use for query
execution plan.
C. Only the ORD_CUSTOMER_IX1 index is created.
D. Only the ORD_CUSTOMER_IX2 index is created.
E. Both the indexes are updated when a new row is inserted, updated, or deleted In the orders table.
Correct Answer: AE
11G has a new feature called Invisible Indexes. An invisible index is invisible to the optimizer as default. Using this
feature we can test a new index without affecting the execution plans of the existing SQL statements or we can test the
effect of dropping an index without dropping it.

 

QUESTION 7
Which two statements are true about the Database Configuration Assistant (DBCA)? (Choose two.)
A. It can be used to create a database template from an existing database.
B. It can be used to add a new tablespace.
C. It can generate SQL database creation scripts.
D. It can be used to copy an existing Oracle database to a new host and apply any patches necessary in the new host.
E. It can configure Automatic Storage Management (ASM) disk groups.
Correct Answer: AC
References: https://docs.oracle.com/cd/E17559_01/em.111/e16599/ appdx_creating_db_templates.htm#CJACEDCD

 

QUESTION 8
You wish to enable an audit policy for all database users, except SYS, SYSTEM, and SCOTT.
You issue the following statements:
SQL> AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SYS; SQL> AUDIT POLICY
ORA_DATABASE_PARAMETER EXCEPT SYSTEM; SQL> AUDIT POLICY ORA_DATABASE_PARAMETER
EXCEPT SCOTT;
For which database users is the audit policy now active?
A. All users except SYS
B. All users except SCOTT
C. All users except sys and SCOTT
D. All users except sys, system, and SCOTT
Correct Answer: B
If you run multiple AUDIT statements on the same unified audit policy but specify different EXCEPT users, then Oracle
The database uses the last exception user list, not any of the users from the preceding lists. This means the effect of the
earlier AUDIT POLICY … EXCEPT statements are overridden by the latest AUDIT POLICY … EXCEPT statement.
Note:
*
The ORA_DATABASE_PARAMETER policy audits commonly used Oracle Database parameter settings. By default,
this policy is not enabled.
*
You can use the keyword ALL to audit all actions. The following example shows how to audit all actions on the
HR.EMPLOYEES table, except actions by user mulligan.
Example Auditing All Actions on a Table CREATE AUDIT POLICY all_actions_on_hr_emp_pol ACTIONS ALL ON
HR.EMPLOYEES;
AUDIT POLICY all_actions_on_hr_emp_pol EXCEPT pmulligan;

 

QUESTION 9
Your single-instance Oracle 12c database home currently supports conventional auditing and uses Automatic Storage
Management (ASM). You want to enable unified auditing by executing the command:
$ make –fins_rdbms.MK uniaud_on oracle ORACLE_HOME=$ORACLE_HOME
Which two steps should you perform before executing this command? (Choose two.)
A. Ensure that the initialization parameter AUDIT_TRAIL is set to DB.
B. Drop any existing fine-grained audit (FGA) policies.
C. Stop the listener.
D. Shut down the database instance.
E. Disable auditing by setting the initialization parameter AUDIT_TRAIL to NONE.
Correct Answer: CE
References: https://blogs.oracle.com/UPGRADE/entry/unified_auditing_is_it_on

 

QUESTION 10
Which three activities are supported by the Data Recovery Advisor? (Choose three.)
A. Advising on block checksum failures
B. Advising on inaccessible control files
C. Advising on inaccessible block change tracking files
D. Advising on empty password files
E. Advising on invalid block header field values
Correct Answer: ABE
* Data Recovery Advisor can diagnose failures such as the following:
/ (B) Components such as data files and control files that are not accessible because they do not exist, do not have the
correct access permissions, have been taken offline, and so on / (A, E) Physical corruptions such as block checksum
failures and invalid block header field values / Inconsistencies such as a data file that is older than other database files /
I/O failures such as hardware errors, operating system driver failures, and exceeding operating system
resource limits (for example, the number of open files)
* The Data Recovery Advisor automatically diagnoses corruption or loss of persistent data on disk, determines the
appropriate repair options, and executes repairs at the user\\’s request. This reduces the complexity of recovery
process, thereby reducing the Mean Time To Recover (MTTR).

 

QUESTION 11
Which two statements are true about SQL *Loader Express Mode in an Oracle 12c database? (Choose two.)
A. The DEGREE_OF_PARALLELISM parameter is set to AUTO.
B. You cannot have multiple SQL *Loader data files.
C. If no data file is specified, it assumes the data file to be .dat in the current directory and uses it.
D. You can have multiple bad files created when loading in parallel.
E. You can selectively load rows into a table based on a filter.
Correct Answer: AC
References:
https://docs.oracle.com/database/121/SUTIL/GUID-0F35B551-861B-450D-8BF32312893A67D7.htm#SUTIL3951

 

QUESTION 12
Your databases all run in ARCHIVELOG mode.
A newly created database has no RMAN backups.
Examine these commands:
CONFIGURE RETENTION POLICY TO REDUNDANCY 2;
RMAN> BACKUP TABLESPACE SYSTEM;
..
backup set complete, elapsed time: 00:00:03
..
RMAN> BACKUP TABLESPACE SYSTEM , SYSAUX;
..
backup set complete, elapsed time: 00:00:04
..
RMAN> BACKUP DATABASE;
..
backup set complete, elapsed time: 00:00:07
..
Which two are true about the execution of the third backup command? (Choose two.)
A. The first backup of the SYSTEM tablespace is deleted.
B. A backup is not performed for the SYSAUX tablespace.
C. The first backup of the SYSTEM tablespace becomes obsolete.
D. A backup is performed for the SYSAUX tablespace.
E. A backup is not performed for the SYSTEM tablespace.
F. The first backup of the SYSTEM tablespace becomes expired.
Correct Answer: BF

 

QUESTION 13
Which statement is true about a database in ARCHIVELOG mode?
A. All backups taken prior to switching to ARCHIVELOG mode can be used to perform complete recovery.
B. Online redo log files have to be multiplexed before putting the database in ARCHIVELOG mode.
C. A Fast Recovery Area (FRA) must be configured for the database.
D. Full database backups can be performed when the database is opened.
Correct Answer: D.

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