1z0-062 sample questions

Question 1

As a user of the ORCL database, you establish a database link to the remote HQ database such that all users in the ORCL database may access tables only from the SCOTT schema in the HQ database. SCOTT’s password is TIGER. The service mane “HQ' is used to connect to the remote HQ database.

Which command would you execute to create the database link?

Accepted Answer

CREATE PUBLIC DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';

Answer

CREATE DATABASE LINK HQ USING 'HQ';

Answer

CREATE DATABASE LINK HQ CONNECT TO CURRENT_USER USING ‘HQ’;

Answer

CREATE DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';

Question 2

What happens if a maintenance window closes before a job that collects optimizer statistics completes?

Accepted Answer

The job is terminated and statistics for the remaining objects are collected the next time the maintenance window opens.

Answer

The job is terminated and the gathered statistics are not saved.

Answer

The job is terminated but the gathered statistics are not published.

Answer

The job continues to run until all statistics are gathered.

Question 3

You plan to create a database by using the Database Configuration Assistant (DBCA), with the following specifications:

- Applications will connect to the database via a middle tier.
- The number of concurrent user connections will be high.
- The database will have mixed workload, with the execution of complex BI queries scheduled at night.

Which DBCA option must you choose to create the database?

Accepted Answer

a General Purpose database template, with the shared server mode option and Automatic Memory Management (AMM) enabled

Answer

a General Purpose database template with default memory allocation

Answer

a Data Warehouse database template, with the dedicated server mode option and AMM enabled

Answer

a default database configuration

Question 4

Which two statements are true about the logical storage structure of an Oracle database? (Choose two.)

Accepted Answer

It is possible to have tablespaces of different block sizes.

Accepted Answer

A data block is the smallest unit of I/O in data files.

Answer

An extent contains data blocks that are always physically contiguous on disk.

Answer

An extent can span multiple segments.

Answer

Each data block always corresponds to one operating system block.

Question 5

Which two statements correctly describe the relationship between data files and logical database structures? (Choose two.)

Accepted Answer

A data file can belong to only one tablespace.

Accepted Answer

An extent cannot span data files.

Answer

A segment cannot span data files.

Answer

The size of an Oracle data block in a data file should be the same as the size of an OS block.

Question 6

Which statement is true about the Log Writer process?

Accepted Answer

It writes when a user commits a transaction.

Answer

It writes when it receives a signal from the checkpoint process (CKPT).

Answer

It writes concurrently to all members of multiplexed redo log groups.

Answer

It writes after the Database Writer process writes dirty buffers to disk.

Question 7

The ORCL database is configured to support shared server mode. You want to ensure that a user connecting remotely to the database instance has a one-to-one ratio between client and server processes.

Which connection method guarantees that this requirement is met?

Accepted Answer

CREATE_SERVICE procedure and using this service for creating a local naming service

Answer

connecting by using an external naming method

Answer

connecting by using the easy connect method

Answer

creating a service in the database by using the DBMS_SERVIC

Answer

connecting by using the local naming method with the SERVER = DEDICATED parameter set in the tnsnames.ora file for the net service

Answer

connecting by using a directory naming method

Question 8

Which two tasks can be performed on an external table? (Choose two.)

Accepted Answer

creating a public synonym

Accepted Answer

creating a view

Answer

partitioning the table

Answer

creating an invisible index

Answer

updating the table by using an UPDATE statement

Question 9

Which three statements are true about a job chain? (Choose three.)

Accepted Answer

It can contain a nested chain of jobs.

Accepted Answer

It can be used to implement dependency-based scheduling.

Accepted Answer

It can be executed using event-based or time-based schedules.

Answer

It cannot invoke the same program or nested chain in multiple steps in the chain.

Answer

It cannot have more than one dependency.

Question 10

The HR user receives the following error while inserting data into the sales table:

ERROR at line 1:
ORA-01653: unable to extend table HR.SALES by 128 in tablespace USERS

On investigation, you find that the users tablespace uses Automatic Segment Space Management (ASSM). It is the default tablespace for the HR user with an unlimited quota on it.

Which two methods would you use to resolve this error? (Choose two.)

Accepted Answer

Altering the data file associated with the USERS tablespace to extend automatically

Accepted Answer

Adding a data file to the USERS tablespace

Answer

Changing segment space management for the USERS tablespace to manual

Answer

Creating a new tablespace with autoextend enabled and changing the default tablespace of the HR user to the new tablespace

Answer

Enabling resumable space allocation by setting the RESUMABLE_TIMEOUT parameter to a nonzero value

Free 1z0-062 sample questions