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Oracle Database Application Development 1Z0-062 practice test questions q1-q13

Exam Name: Oracle Database 12c: Installation and Administration
Updated: 2021
1Z0-062 practice test Q&As: 13

QUESTION 1
Your database is configured for ARCHIVELOG mode, and a daily full database backup is taken. RMAN is configured to
perform control file autobackup.
In which three scenarios do you need media recovery? (Choose three.)
A. loss of all the copies of the control file
B. loss of all the inactive online redo log group members
C. loss of a data file that belongs to the active undo tablespace
D. loss of data files that belong to the SYSTEM tablespace
E. logical corruption of data that is caused by a wrong transaction
F. abnormal termination of the database instance
Correct Answer: ACD


QUESTION 2
Your database has archive logging enabled and RMAN backups are taken at regular intervals. A data file in the USERS
tablespace is damaged.
Which command must you execute before starting the recovery of this tablespace?
A. ALTER TABLESPACE users OFFLINE
B. STARTUP FORCE NOMOUNT
C. STARTUP FORCE
D. SWITCH DATAFILE ALL
Correct Answer: A


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
Which statement is true about using the Export/Import method for migrating data when upgrading to Oracle Database
12c?
A. It automatically restarts a Data Pump Export or Import job after a failure is connected and the job continues from the
point of failure.
B. It can be used to migrate a database only if the source and target databases are hosted on the same endian format.
C. It can be used to migrate a database only if the source database does not have any tablespace in read-only mode.
D. It allows migration of a database directly over network links.
Correct Answer: D


QUESTION 5
You want execution of large database operations to suspend, and then resume, in the event of space allocation
failures.
You set the value of the initialization parameter RESUMABLE_TIMEOUT to 3600.
Which two statements are true? (Choose two.)
A. Before a statement executes in resumable mode, the ALTER SESSION ENABLE RESUMABLE statement must be
issued in its session.
B. Data Manipulation Language (DML) operations are resumable, provided that they are not embedded in a PL/SQL
block.
C. A resumable statement can be suspended and resumed only once during execution.
D. A suspended statement will report an error if no corrective action has taken place during a timeout period.
E. Suspending a statement automatically results in suspending a transaction and releasing all the resources held by the
transaction.
Correct Answer: AD

QUESTION 6
Which four actions are possible during an Online Data file Move operation? (Choose four.)
A. Creating and dropping tables in the data file being moved
B. Performing file shrink of the data file being moved
C. Querying tables in the data file being moved
D. Performing Block Media Recovery for a data block in the data file being moved
E. Flashing back the database
F. Executing DML statements on objects stored in the data file being moved
Correct Answer: ACEF

You can now move On line Datafile without hove to stop Monoged Recovery and manually copy and rename Files. This
can even be used to move Datafiles from or to ASM.

New in Oracle Database 12c: FROM METAUNK. Physical Standby Database is in Active Data Guard Mode (opened
READ ONLY and Managed Recovery is running):
It is now possible to online move a Datafile while Managed Recovery is running, ie. the Physical Standby Database is in
Active Data Guard Mode. You can use this Command to move the Datafile

A flashback operation does not relocate a moved data file to its previous location. If you move a data file online from
one location to another and later flash back the database to a point in time before the move, then the Data file remains
in
the new location, but the contents of the Data file ore changed to the contents at the time specified in the flashback.
Oracle0 Database Administrator\\’s Guide 12c Release 1 (12.1)

QUESTION 7
In your database, the RESOURCE_LIMIT parameter is set to TRUE. You create the profile: Which two statements are
true about users and their sessions that are subject to this profile? (Choose two.)

1Z0-062 exam questions-q7

A. The CPU_PER_CALL is ignored in the user sessions because of the unlimited value of CPU_PER_CALL
B. These users can never reuse a password
C. The PASSWORD_LIFE_TIME value is ignored because of the unlimited value of PASSWORD_REUSE_MAX.
D. In each user session, the limit for LOGICAL_READS_PER_SESSION in the same as defined in the DEFAULT
profile.
Correct Answer: CD

QUESTION 8
You perform RMAN backups for your database and use a recovery catalog for managing the backups. To free space,
you execute this command:
RMAN> DELETE OBSOLETE;
Which three statements are true is this scenario? (Choose three.)
A. The backup sets marked as expired are deleted.
B. The information related to the backups is removed from the recovery catalog and the control file.
C. The physical files related to the backup need to be manually deleted.
D. The physical files related to the backup are deleted automatically.
E. The backups deleted are based on the backup retention policy.
Correct Answer: BDE

QUESTION 9
Which statement is true about Oracle Net Listener?
A. It acts as the listening endpoint for the Oracle database instance for all local and non-local user connections.
B. A single listener can service only one database instance and multiple remote client connections.
C. Service registration with the listener is performed by the process monitor (PMON) process of each database
instance.
D. The listener.ora configuration file must be configured with one or more listening protocol addresses to allow remote
users to connect to a database instance.
E. The listener.ora configuration file must be located in the ORACLE_HOME/network/admin directly.
Correct Answer: C
https://docs.oracle.com/database/121/CNCPT/process.htm

QUESTION 10
Examine the details of the uncompressed, non-partitioned heap table CITIES.

1Z0-062 exam questions-q10

Examine the command:
SQL> ALTER TABLE cities SHRINK SPACE COMPACT;
What must you do before executing it?
A. Ensure free space that is approximately equal to the space used by the table should be available.
B. Ensure there are no pending transactions on the table.
C. Enable row movement is enabled.
D. Disable all indexes on the table.
Correct Answer: C

QUESTION 11
Which three statements are true about a job chain? (Choose three.)
A. The DBA role is required to create a job chain.
B. It can be used to implement dependency-based scheduling.
C. It cannot invoke the same program or nested chain in multiple steps in the chain.
D. It cannot have more than one dependency.
E. It can be executed using event-based schedules.
F. It can be executed using time-based schedules.
Correct Answer: BEF


QUESTION 12
The HR user executes the following query on the EMPLOYEES table but does not issue COMMIT, ROLLBACK, or any
data definition language (DDL) command after that:

1Z0-062 exam questions-q12

HR then opens a second session.
Which two operations wait when executed in HR\\’s second session? (Choose two.)
A. LOCK TABLE employees IN EXCLUSIVE MODE;
B. INSERT INTO employees(empno,ename) VALUES (1289, `Dick\\’);
C. SELECT job FROM employees WHERE job=\\’CLERK\\’ FOR UPDATE OF empno;
D. SELECT empno,ename FROM employees WHERE job=\\’CLERK\\’;
E. INSERT INTO employees(empno,ename,job) VALUES (2001,\\’Harry\\’,\\’CLERK);
Correct Answer: AC


QUESTION 13
In order to exploit some new storage tiers that have been provisioned by a storage administrator, the partitions of a
large heap table must be moved to other tablespaces in your Oracle 12c database?
Both local and global partitioned B-tree Indexes are defined on the table.
A high volume of transactions access the table during the day and a medium volume of transactions access it at night
and during weekends.
Minimal disrupt ion to availability is required.
Which three statements are true about this requirement? (Choose three.)
A. The partitions can be moved online to new tablespaces.
B. Global indexes must be rebuilt manually after moving the partitions.
C. The partitions can be compressed in the same tablespaces.
D. The partitions can be compressed in the new tablespaces.
E. Local indexes must be rebuilt manually after moving the partitions.
Correct Answer: ACD
A: You can create and rebuild indexes online. Therefore, you can update base tables at the same time you are building
or rebuilding indexes on that table. You can perform DML operations while the index build is taking place, but DDL
operations are not allowed. Parallel execution is not supported when creating or rebuilding an index online.
D: Moving (Rebuilding) Index-Organized Tables
Because index-organized tables are primarily stored in a B-tree index, you can encounter fragmentation as a
consequence of incremental updates. However, you can use the ALTER TABLE…MOVE statement to rebuild the index
and reduce
this fragmentation.
C: If a table can be compressed in the new tablespace, also it can be compressed in the same tablespace.
Incorrect:
Not B, not E: Local and Global indexes can be automatically rebuilt with UPDATE INDEXES when you move the table.

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