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QUESTION NO:78

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Your database is open and the LISTENER listener running. You stopped the wrong listener LISTENER by

issuing the following command:

1snrctl > STOP

What happens to the sessions that are presently connected to the database Instance?

A. They are able to perform only queries.

B. They are not affected and continue to function normally.

C. They are terminated and the active transactions are rolled back.

D. They are not allowed to perform any operations until the listener LISTENER is started.

Correct Answer: B

Explanation

Explanation/Reference:

The listener is used when the connection is established. The immediate impact of stopping the listener will

be that no new session can be established from a remote host. Existing sessions are not compromised.

QUESTION NO:68

Examine the following parameters for a database instance:

MEMORY_MAX_TARGET=0

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MEMORY_TARGET=0

SGA_TARGET=0

PGA_AGGREGATE_TARGET=500m

Which three initialization parameters are not controlled by Automatic Shared Memory Management

(ASMM)?

A. LOG_BUFFER

B. SORT_AREA_SIZE

C. JAVA_POOL_SIZE

D. STREAMS_POOL_SIZE

E. DB_16K_CACHE_SZIE

F. DB_KEEP_CACHE_SIZE

Correct Answer: AEF

Explanation

Explanation/Reference:

Manually Sized SGA Components that Use SGA_TARGET Space

SGA Component, Initialization Parameter

/ The log buffer

LOG_BUFFER

/ The keep and recycle buffer caches

DB_KEEP_CACHE_SIZE

DB_RECYCLE_CACHE_SIZE

/ Nonstandard block size buffer caches

DB_nK_CACHE_SIZE

Note:

* In addition to setting SGA_TARGET to a nonzero value, you must set to zero all initialization parameters

listed in the table below to enable full automatic tuning of the automatically sized SGA components.

* Table, Automatically Sized SGA Components and Corresponding Parameters

QUESTION NO:67

You have installed two 64G flash devices to support the Database Smart Flash Cache feature on your

database server that is running on Oracle Linux.

You have set the DB_SMART_FLASH_FILE parameter:

DB_FLASH_CACHE_FILE= `/dev/flash_device_1 `,’ /dev/flash_device_2′

How should the DB_FLASH_CACHE_SIZE be configured to use both devices?

A. Set DB_FLASH_CACHE_ZISE = 64G.

B. Set DB_FLASH_CACHE_ZISE = 64G, 64G

C. Set DB_FLASH_CACHE_ZISE = 128G.

D. DB_FLASH_CACHE_SIZE is automatically configured by the instance at startup.

Correct Answer: B

Explanation

Explanation/Reference:

* Smart Flash Cache concept is not new in Oracle 12C – DB Smart Flash Cache in Oracle 11g. In this

release Oracle has made changes related to both initialization parameters used by DB Smart Flash cache.

Now you can define many files|devices and its sizes for “Database Smart Flash Cache” area. In previous

releases only one file|device could be defined.

DB_FLASH_CACHE_FILE = /dev/sda, /dev/sdb, /dev/sdc

DB_FLASH_CACHE_SIZE = 32G, 32G, 64G

So above settings defines 3 devices which will be in use by “DB Smart Flash Cache”

/dev/sda size 32G

/dev/sdb size 32G

/dev/sdc size 64G

New view V$FLASHFILESTAT it’s used to determine the cumulative latency and read counts of each file|

device and compute the average latency

QUESTION NO:36

On your Oracle 12c database, you invoked SQL *Loader to load data into the EMPLOYEES table in the

HR schema by issuing the following command:

$> sqlldr hr/hr@pdb table=employees

Which two statements are true regarding the command?

A. It succeeds with default settings if the EMPLOYEES table belonging to HR is already defined in the

database.

B. It fails because no SQL *Loader data file location is specified.

C. It fails if the HR user does not have the CREATE ANY DIRECTORY privilege.

D. It fails because no SQL *Loader control file location is specified.

Correct Answer: AC

Explanation

Explanation/Reference:

Note:

* SQL*Loader is invoked when you specify the sqlldr command and, optionally, parameters that establish

session characteristics.

QUESTION NO:66

What is the effect of specifying the “ENABLE PLUGGABLE DATABASE” clause in a “CREATE

DATABASE” statement?

A. It will create a multitenant container database (CDB) with only the root opened.

B. It will create a CDB with root opened and seed read only.

C. It will create a CDB with root and seed opened and one PDB mounted.

D. It will create a CDB that must be plugged into an existing CDB.

E. It will create a CDB with root opened and seed mounted.

Correct Answer: B

Explanation

Explanation/Reference:

* The CREATE DATABASE … ENABLE PLUGGABLE DATABASE SQL statement creates a new CDB. If

you do not specify the ENABLE PLUGGABLE DATABASE clause, then the newly created database is a

non-CDB and can never contain PDBs.

Along with the root (CDB$ROOT), Oracle Database automatically creates a seed PDB (PDB$SEED). The

following graphic shows a newly created CDB:

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* Creating a PDB

Rather than constructing the data dictionary tables that define an empty PDB from scratch, and then

populating its Obj$ and Dependency$ tables, the empty PDB is created when the CDB is created. (Here,

we use empty to mean containing no customer-created artifacts.) It is referred to as the seed PDB and has

the name PDB$Seed. Every CDB non-negotiably contains a seed PDB; it is non-negotiably always open in

read-only mode. This has no conceptual significance; rather, it is just an optimization device. The create

PDB operation is implemented as a special case of the clone PDB operation.

QUESTION NO:61

You create a new pluggable database, HR_PDB, from the seed database. Which three tablespaces are

created by default in HR_PDB?

A. SYSTEM

B. SYSAUX

C. EXAMPLE

D. UNDO

E. TEMP

F. USERS

Correct Answer: ABE

Explanation

Explanation/Reference:

* A PDB would have its SYSTEM, SYSAUX, TEMP tablespaces.It can also contains other user created

tablespaces in it.

*

* Oracle Database creates both the SYSTEM and SYSAUX tablespaces as part of every database.

* tablespace_datafile_clauses

Use these clauses to specify attributes for all data files comprising the SYSTEM and SYSAUX tablespaces

in the seed PDB.

Incorrect:

Not D: a PDB can not have an undo tablespace. Instead, it uses the undo tablespace belonging to the

CDB.

Note:

* Example:

CONN pdb_admin@pdb1

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SELECT tablespace_name FROM dba_tablespaces;

TABLESPACE_NAME

SYSTEM

SYSAUX

TEMP

USERS

SQL>

QUESTION NO:47

You notice a performance change in your production Oracle 12c database. You want to know which

change caused this performance difference.

Which method or feature should you use?

A. Compare Period ADDM report

B. AWR Compare Period report

C. Active Session History (ASH) report

D. Taking a new snapshot and comparing it with a preserved snapshot

Correct Answer: B

Explanation

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Explanation/Reference:

The awrddrpt.sql report is the Automated Workload Repository Compare Period Report. The awrddrpt.sql

script is located in the $ORACLE_HOME/rdbms/admin directory.

Incorrect:

Not A: Compare Period ADDM

Use this report to perform a high-level comparison of one workload replay to its capture or to another

replay of the same capture. Only workload replays that contain at least 5 minutes of database time can be

compared using this report.

QUESTION NO:22

You execute the commands:

SQL>CREATE USER sidney

IDENTIFIED BY out_standing1

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DEFAULT TABLESPACE users

QUOTA 10M ON users

TEMPORARY TABLESPACE temp

ACCOUNT UNLOCK;

SQL> GRANT CREATE SESSION TO Sidney;

Which two statements are true?

A. The create user command fails if any role with the name Sidney exists in the database.

B. The user sidney can connect to the database instance but cannot perform sort operations because no

space quota is specified for the temp tablespace.

C. The user sidney is created but cannot connect to the database instance because no profile is

D. The user sidney can connect to the database instance but requires relevant privileges to create objects

in the users tablespace.

E. The user sidney is created and authenticated by the operating system.

Correct Answer: AE

Explanation

Explanation/Reference:

QUESTION NO:82

You support Oracle Database 12c Oracle Database 11g, and Oracle Database log on the same server.

All databases of all versions use Automatic Storage Management (ASM).

Which three statements are true about the ASM disk group compatibility attributes that are set for a disk

group?

A. The ASM compatibility attribute controls the format of the disk group metadata.

B. RDBMS compatibility together with the database version determines whether a database Instance can

mount the ASM disk group.

C. The RDBMS compatibility setting allows only databases set to the same version as the compatibility

value, to mount the ASM disk group.

D. The ASM compatibility attribute determines some of the ASM features that may be used by the Oracle

disk group.

E. The ADVM compatibility attribute determines the ACFS features that may be used by the Oracle 10 g

database.

Correct Answer: ABD

Explanation

Explanation/Reference:

AD: The value for the disk group COMPATIBLE.ASM attribute determines the minimum software version

for an Oracle ASM instance that can use the disk group. This setting also affects the format of the data

structures for the Oracle ASM metadata on the disk.

B: The value for the disk group COMPATIBLE.RDBMS attribute determines the minimum COMPATIBLE

database initialization parameter setting for any database instance that is allowed to use the disk group.

Before advancing the COMPATIBLE.RDBMS attribute, ensure that the values for the COMPATIBLE

initialization parameter for all of the databases that access the disk group are set to at least the value of

the new setting for COMPATIBLE.RDBMS.

For example, if the COMPATIBLE initialization parameters of the databases are set to either 11.1 or 11.2,

then COMPATIBLE.RDBMS can be set to any value between 10.1 and 11.1 inclusively.

Not E:

/The value for the disk group COMPATIBLE.ADVM attribute determines whether the disk group can

contain Oracle ASM volumes. The value must be set to 11.2 or higher. Before setting this attribute, the

COMPATIBLE.ASM value must be 11.2 or higher. Also, the Oracle ADVM volume drivers must be loaded

in the supported environment.

/ You can create an Oracle ASM Dynamic Volume Manager (Oracle ADVM) volume in a disk group. The

volume device associated with the dynamic volume can then be used to host an Oracle ACFS file system.

The compatibility parameters COMPATIBLE.ASM and COMPATIBLE.ADVM must be set to 11.2 or higher

for the disk group.

Note:

* The disk group attributes that determine compatibility are COMPATIBLE.ASM, COMPATIBLE.RDBMS.

and COMPATIBLE.ADVM. The COMPATIBLE.ASM and

COMPATIBLE.RDBMS attribute settings determine the minimum Oracle Database software version

numbers that a system can use for Oracle ASM and the database instance types respectively. For

example, if the Oracle ASM compatibility setting is 11.2, and RDBMS compatibility is set to 11.1, then the

Oracle ASM software version must be at least 11.2, and the Oracle Database client software version must

be at least 11.1. The COMPATIBLE.ADVM attribute determines whether the Oracle ASM Dynamic Volume

Manager feature can create an volume in a disk group.

QUESTION NO:41

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What are two benefits of installing Grid Infrastructure software for a stand-alone server before installing

and creating an Oracle database?

A. Effectively implements role separation

B. Enables you to take advantage of Oracle Managed Files.

C. Automatically registers the database with Oracle Restart.

D. Helps you to easily upgrade the database from a prior release.

E. Enables the Installation of Grid Infrastructure files on block or raw devices.

Correct Answer: AC

Explanation

Explanation/Reference:

C: To use Oracle ASM or Oracle Restart, you must first install Oracle Grid Infrastructure for a standalone

server before you install and create the database. Otherwise, you must manually register the database

with Oracle Restart.

Desupport of Block and Raw Devices

With the release of Oracle Database 11g release 2 (11.2) and Oracle RAC 11g release 2 (11.2), using

Database Configuration Assistant or the installer to store Oracle Clusterware or Oracle Database files

directly on block or raw devices is not supported. If you intend to upgrade an existing Oracle RAC

database, or an Oracle RAC database with Oracle ASM instances, then you can use an existing raw or

block device partition, and perform a rolling upgrade of your existing installation. Performing a new

installation using block or raw devices is not allowed.

Reference: Oracle Grid Infrastructure for a Standalone Server, Oracle Database, Installation Guide, 12c

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