1z0-497 Oracle Database 12c Essentials exact Exam Questions

Oracle Database 12c Essentials

Last Update 3 hours ago Total Questions : 150

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Question # 4

Examine the commands:

SQL > CONNECT sys@CDBl AS SYSDBA

$QL > STARTUP MOUNT

SQL > ALTER DATABASE cdbl MOUNT;

Which four options represent what happens when these commands are executed?

The instance is started.

The CDB control files are opened for the instance.

The root is mounted.

The root is opened.

The PDBs are mounted.

The PDBs are mounted, and the seed is opened in READ ONLY mode.

The PDBs are mounted, and opened in READ WRITE mode, while the seed is opened In READ ONLY mode.

Question # 5

Which two statements about the Process Monitor (PMON) process are true?

PMON performs process recovery when a client process fails.

During instance startup, PMON takes care of instance recovery.

PMON performs listener registration.

PMON restarts background and dispatcher processes when they fail.

PMON resolves failures of distributed transactions.

Question # 6

Which two are client-side components of Oracle Data Guard Broker?

Oracle Enterprise Manager Cloud Control

Oracle Data Guard monitor

Oracle Data Guard command-line interface (DGMGRL)

Oracle Data Guard Broker Manager

Question # 7

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?

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.

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.

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

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

Question # 8

You have two database servers EMP and EXP. A user of the database from the EXP server wants to extract some information from the database in the EMP server for cross-verification. Which schema object enables the user to access the information from the remote database?

cluster

database link

mapping table

materialized view

Question # 9

Examine the command:

sqlplus /nolog

In which scenario would this command execute successfully?

only from the server, if the database instance is not up

from either a client or server, even if the database instance is not up

from either a client or server, only if the database instance is up, and the command connects the session to the instance

from either a client or server, only if the database instance is up, but the command does not connect the session to the instance

Question # 10

Consider an application in which memory required for each session is 400 KB and memory required for each server process is 4 MB. The pool size is 100 and the number of shared servers used is 100. If there are 5000 client connections, what is the amount of memory used by a dedicated server?

615 MB

2.5 GB

4 GB

12 GB

22 GB