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1z0-497 Questions and Answers

Question # 6

You need to recover a database running In NOARCHIVELOG mode. Which two statements are true in this scenario?

A.

You can perform complete recovery by using the command:

RESTORE DATABASE

FROM TAG“consistent_whole_backup”;

RECOVER DATABASE;

B.

You can perform incomplete recovery by using the command:

RESTORE DATABASE;

FROM TAG "consistent_whole_backup";

RECOVER DATABASE NOREDO;

C.

Only consistent backups can be used for restoring a database in NOARCHIVELOG mode.

D.

Media recovery is possible in most cases.

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Question # 7

Your database instance is running. db01 is a net service name. You issue a connection request by using the command:

SQL> CONNECT scott/tiger@db01

Which component receives the request and establishes the appropriate connection?

A.

listener

B.

user process

C.

service name

D.

server process

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Question # 8

Your customer is planning for a maximum-availability architecture at their data center to address their planned downtime, unplanned downtime, and replication needs.

Consider these options:

- Instance, site recovery, and heterogeneous setup

- Inter-region and intra-region load balancing across replicated databases

- Fine-grained error investigation of incorrect results

- Integrated client and application failover

- Fastest and simplest database replication

Which four options would you recommend?

A.

Oracle GoldenGate

B.

Global Data Services

C.

Oracle Data Guard

D.

Data Recovery Advisor

E.

Oracle Flashback technology

F.

Oracle Advanced Queuing

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Question # 9

Examine the command:

SQL> CREATE TABLE orders(oid NUMBER (6) PRIMARY KEY, odato DATE, ccode NUMBER (6), oamt NUMBER (10, 2)) TABLESPACE users ;

Which two statements are true about the execution of the command?

A.

A CHECK constraint is created on the OID column.

B.

A NOT NULL constraint is created on the OID column.

C.

The ORDERS table is the only object created in the USERS tablespace.

D.

The ORDERS table and a unique index are created in the USERS tablespace.

E.

The ORDERS table is created in the USERS tablespace and a unique index is created on the OID column in the SYSTEM tablespace.

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Question # 10

Which three events signal a database writer (DWR) to write buffers to disk?

A.

The database advances a checkpoint.

B.

A client process commits a transaction.

C.

The redo log buffer becomes full.

D.

A server process cannot find non-dirty blocks after scanning a threshold number of buffers.

E.

A tablespace is changed to read-only status.

F.

The database is shut down in immediate mode.

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Question # 11

Oracle Database 12c provides new task-specific privileges (SYSBACKUP, SYSDG, and SYSKM) to handle standard administration duties. Which two statements about these standard administration privileges are true?

A.

These administrative privileges enable you to connect to the database only if the database is open.

B.

After connecting with these privileges, you are connected under a predefined user whose name is the privilege name.

C.

These administrative privileges allow a user to view DBA_xxx, GV$, VS, and SELECT on application tables.

D.

Without being a member of OSBACKUP. OSDG, and OSKM OS groups, users cannot connect as administrative users by using OS authentication.

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Question # 12

Which three tasks can you perform in Database Express?

A.

View performance and status information about the database instance.

B.

Start up the database.

C.

Shut down the database.

D.

Create database structures.

E.

Manage users and security.

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Question # 13

Examine the table:

Table name: PRODUCTS

Schema: SCOTT

Tablespace: USERS

Organization: Standard (Heap Organized)

This table contains 20 rows. In the data that has been entered, the PROD_ID column contains only single-digit values, PROD_NAME has a maximum of five characters, and PROD_RATE has four-digit values for all rows.

Which two statements are true regarding the modifications that can be performed to the structure of the PRODUCTS table?

A.

PROD_NAME size can be increased from five to 10 characters.

B.

PROD_ID can be changed from CHAR to NUMBER data type.

C.

PROD_RATE size can be changed from NUMBER(4) to NUMBER(6, 2).

D.

New columns can be added only if they have a NOT NULL constraint.

E.

None of the existing columns can be dropped because they contain data.

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Question # 14

YOU want to move all objects of the CONSULTANT user from the test database to theDB-USER schema of the production database. Which option of IMPDP would you use to accomplish this task?

A.

FULL

B.

SCHEMAS

C.

TRANSFORM

D.

REMAP_SCHEMA

E.

REMAP_TABLESPACE

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Question # 15

Which statement about a server parameter file (SPFILE) is false?

A.

An SPFILE is a binary file that cannot be edited by using a text editor.

B.

You can create an SPFILE from an existing text initialization parameter file or from memory.

C.

You can use the SHOW PARAMETERS command to display the values of initialization parameters in an SPFILE.

D.

The instance first searches for an SPFILE named spfileoRACLE_SID.ora and, if this is not found. It searches for spfile.ora.

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Question # 16

As part of your Oracle Database 12c post-installation tasks, you run these commands:

Cd $ORACLE_HOME/bin

srvctl stop database -d myDb

chopt enable dm

srvctl start database -d myDb

What does this do?

A.

It enables the Oracle Data Mining option in your Oracle binary files.

B.

It creates the Fast Recovery Area disk group.

C.

It generates Client Static Library.

D.

It configures one of the Oracle user accounts.

E.

It configures Oracle Net Services.

F.

It configures Oracle Messaging Gateway.

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Question # 17

Examine the command below:

BEGIN DBMS_REDACT.ADD_POLICY(

object_schema => 'mavis',

object_name => 'cust_info',

column_name => 'emp_id',

policy_name => 'redact_cust_ids',

function_type => DBMS_REDACT.REGEXP,

expression => '1=1',

regexp_pattern => '(\d\d\d)(\d\d)(\d\d\d\d)',

regexp_replace_string => 'XXXXX\3',

regexp_position => 1,

regexp_occurrence => 0,

regexp_match_parameter => 'i',

policy_description => 'Redacts customer IDs',

column_description => 'emp_id contains employee ID numbers');

END;

/

What do the regexp_pattern and regexp_replace_string parameters accomplish?

A.

They find a pattern of nine digits; break the digits into three groups that contain the first three, the next two and then the last four digits; and replace all digits with XXXXX concatenated with the last four digits.

B.

They find a pattern of six digits; break the digits into two groups that contain the first five, and then the last digit; and replace all digits with XXXXX concatenated with the last digit.

C.

They find a pattern of nine digits and display the digits as XXXXX XX XXXX.

D.

They find a pattern of nine digits and display the first five digits as XXXXX and the last four digits as 3333.

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Question # 18

Examine the command below:

LSNRCTL> SERVICES LISTENER2

Connecting to (DESCRIPTION=(ADDRESS= (PROTOCOL=TCP) (HOST=estb. us. abc.com) (PORT=1525)))

Services Summary. . .

Service "orcl.oracle.com" has 1 instance(s).

Instance "oracle", status UNKNOWN, has 1 handler(s) for this service... Handler(s):

"DEDICATED" established:2 refused:0 LOCAL SERVER The command completed successfully

Which two statements are true about LISTENER2?

A.

The ORCL instance is registered dynamically with the listener.

B.

The ORCL instance is registered statically in the listener.ora file.

C.

The number of current client connections handled by the service handler is two.

D.

The total number of client connections handled so far by the service handler is two.

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Question # 19

You add the following code in the tnsnames.ora file on a client PC:

sales=

(DESCRIPTION=

(ADDRESS= (PROTOCOL=TCP)(HOST=salesdata) (PORT=1521) )

(CONNECT_DATA=

(SERVICE_NAME=sales.acme)))

Which statement is true about the code with respect to creating a new connect identifier?

A.

It is created for the SALES database in the network domain ACME on the SALESDATA server.

B.

It is created for the SALESDATA database on the SALES server in the network domain called ACME.

C.

It generates an error because the connect identifier name cannot be a part of SERVICE_NAME.

D.

It generates an error because the server configuration mode (dedicated or shared) is not specified.

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Question # 20

Which three components are always part of System Global Area?

A.

Database Buffer Cache

B.

Undo Log Buffer

C.

Shared Pool

D.

Small Pool

E.

Java Pool

F.

Private SQL Area

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Question # 21

Which three statements about Automatic Database Diagnostic Monitor (ADDM) are true?

A.

It requires the database to be open.

B.

It analyzes the performance of specified objects.

C.

It implements all recommendations automatically.

D.

It recommends solutions and quantifies expected benefits.

E.

It retains snapshots in the SYSAUX tablespace until the database is restarted.

F.

It analyzes the snapshots stored in the Automatic Workload Repository (AWR).

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Question # 22

Which two statements are true about shared server sessions?

A.

No Program Global Area (PGA) is allocated for shared server processes.

B.

User Global Area is stored in System Global Area (SGA).

C.

Shared SQL Area is allocated from Program Global Area (PGA).

D.

Private SQL Area is allocated from Library Cache.

E.

Large Pool is used for SQL work areas.

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