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Topics of Oracle 1z0-082: Oracle Database Administration I Exam

The Oracle 1Z0-068 practice exams the abilities and knowledge of the candidates by checking the following objectives of 1z0-068 exam dumps:

Understanding Oracle Database Architecture - Oracle Database: Administration Workshop

• Understanding Oracle Database Server Architecture
• Understanding Oracle Database Instance Configurations
• Understanding Oracle Database Memory and Process Structures
• Understanding Logical and Physical Database Structures

Managing Database Instances - Oracle Database: Administration Workshop

• Using Data Dictionary Views
• Using the Automatic Diagnostic Repository (ADR)
• Shutting Down Oracle Database Instances
• Using the Alert Log and Trace Files
• Managing Initialization Parameter Files

Managing Users, Roles, and Privileges - Oracle Database: Administration Workshop

• Creating and Assigning Profiles
• Assigning Quotas to Users
• Administering User Authentication Methods
• Applying the Principle of Least Privilege
• Managing Oracle Database Users, Privileges, and Roles

Managing Storage - Oracle Database: Administration Workshop

• Understanding Block Space Management
• Using Table and Row Compression
• Managing Different Types of Segments
• Using Space-Saving Features
• Deferring Segment Creation

Moving Data - Oracle Database: Administration Workshop

• Using SQL Loader
• Using External Tables
• Using Oracle Data Pump

Accessing an Oracle Database with Oracle supplied Tools - Oracle Database: Administration Workshop

• Using SQL Plus
• Using oracle enterprise Manager Database Express
• Using Oracle Enterprise Manager Cloud Control
• Using the Database Configuration Assistant (DBCA)
• Using SQL Developer

Configuring Oracle Net Services - Oracle Database: Administration Workshop

• Comparing Dedicated and Shared Server Configurations
• Configuring Communication Between Database Instances
• Configuring the Oracle Net Listener
• Connecting to an Oracle Database Instance

Managing Tablespaces and Datafiles - Oracle Database: Administration Workshop

• Viewing Tablespace Information
• Creating, Altering, and Dropping Tablespaces
• Implementing Oracle Managed Files
• Managing Table Data Storage
• Moving and Renaming Online Data Files

Managing Undo - Oracle Database: Administration Workshop

• Using Substitution Variables
• Limiting Rows Returned in a SQL Statement
• Understanding Transactions and Undo Data
• Comparing Undo Data and Redo Data
• Configuring Undo Retention
• Applying Rules of precedence for operators in an expression
• Understanding Temporary Undo
• Storing Undo Information

Using Conversion Functions and Conditional Expressions - Oracle Database: Introduction to SQL

• Working with INTERVAL data types
• Understanding Data Definition Language - Oracle Database: Introduction to SQL
• Manipulating dates with the date function
• Using Self-joins
• Retrieving Data using the SQL SELECT Statement - Oracle Database: Introduction to SQL
• Using The MINUS operator
• Using concatenation operator, literal character strings, alternative quote operator, and the DISTINCT keyword
• Using SET Operators - Oracle Database: Introduction to SQL
• Using Various Types of Joins
• Using Column aliases
• Applying the NVL, NULLIF, and COALESCE functions to data
• Nesting multiple functions
• Using Single-Row Functions to Customize Output - Oracle Database: Introduction to SQL
• Manipulating numbers with the ROUND, TRUNC, and MOD functions
• Matching the SELECT statements
• Managing Views - Oracle Database: Introduction to SQL
• Using Arithmetic expressions and NULL values in the SELECT statement
• Understanding implicit and explicit data type conversion
• Using Data Definition Language
• Working with CURRENT_DATE, CURRENT_TIMESTAMP, and LOCALTIMESTAMP
• Performing arithmetic with date data
• Using the ORDER BY clause in set operations
• Using the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions
• Using OUTER joins
• Using The DESCRIBE command
• Manipulating strings with character functions in SQL SELECT and WHERE clauses
• Using Non-equijoins
• Using The INTERSECT operator
• Using The UNION and UNION ALL operators
• Displaying Data from Multiple Tables Using Joins - Oracle Database: Introduction to SQL
• Managing Data in Different Time Zones - Oracle Database: Introduction to SQL
• Managing Views

Reporting Aggregated Data Using Group Functions - Oracle Database: Introduction to SQL

• Controlling transactions
• Managing Tables using DML statements - Oracle Database: Introduction to SQL
• Managing Database Transactions
• Creating Groups of Data
• Managing Schema Objects - Oracle Database: Introduction to SQL
• Using Data Manipulation Language
• Managing Synonyms
• Using Single-Row Subqueries
• Using Group Functions
• Using Multiple Row Subqueries
• Using Subqueries to Solve Queries - Oracle Database: Introduction to SQL
• Restricting Group Results
• Managing Sequences
• Creating and using temporary tables
• Managing constraints
• Managing Indexes

 

NEW QUESTION 62
Your database instance was shut down normally and then started in NOMOUNT state. You then execute this command:
ALTER DATABASE MOUNT;
Which two actions are performed? (Choose two.)

• A. The control file is read
• B. The initialization parameter file is read
• C. The online data files are opened
• D. The Oracle background processes are started
• E. The online redo logs are opened
• F. The alert log records the execution details

Answer: A,D

 

NEW QUESTION 63
Which three statements are true about the Automatic Diagnostic Repository (ADR)?

• A. It Is held Inside an Oracle database schema.
• B. It is a file-based repository held outside any database.
• C. It can be used for problem diagnosis of a database when that database's instance is down.
• D. The ADR base is specified In the diagnostic_dest database parameter.
• E. It is only used for Oracle Database diagnostic information.

Answer: A,B,D

 

NEW QUESTION 64
In your data center, Oracle Managed Files (OMF) is used for all databases.
All tablespaces are smallfile tablespaces.
SALES_Q1 is a permanent user-defined tablespace in the SALES database.
Examine this command which is about to be issued by a DBA logged in to the SALES database:
ALTER TABLESPACE sales_q1 ADD DATAFILE;
Which are two actions, either one of which you could take to ensure that the command executes successfully? (Choose two.)

• A. Add the AUTOEXTEND ON clause with NEXT set to 100M.
• B. Ensure that DB_CREATE_FILE_DEST specifies a location with at least 100 Mb of available space.
• C. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify locations with at least 50 Mb of available space.
• D. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specify with at least 50 Mb of available space.
• E. Specify a path in the DATAFILE clause of the command specifying a location with at least 100M of available space.

Answer: A,E

 

NEW QUESTION 65
You execute this command:

During the export operation, you detach from the job by using CTRL+C and then execute this command:
Export> STOP_JOB=immediate
Are you sure you wish to stop the job ([yes]/no): yes
Which two statements are true about the job? (Choose two.)

• A. It continues to run in the background
• B. You can reattach to it and monitor it
• C. It is paused and can be resumed
• D. You can no longer monitor it
• E. It terminates

Answer: B,C

Explanation:
Reference:
https://blog.oracle48.nl/killing-and-resuming-datapump-expdp-and-impdp-jobs/

 

NEW QUESTION 66
The ORCL database has RESUMABLE__TIMEOUT = 7200 and
DEFERRED_SEGMENT_CREATION = FALSE
User U1 has a 1 MB quota in tablespace DATA.
U1 executes this command:
SQL> CREATE TABLE t1 AS
(SELECT object_name, sharing, created
FROM dba_objects);
U1 complains that the command is taking too long to execute.
In the alert log, the database administrator (DBA) finds this:
2017-03-06T12:15:17.183438+05:30
statement in resumable session 'User U1(136), Session 1, Instance 1'
was suspended due to ORA-01536: space quota exceeded for tablespace
'DATA'
Which are three actions any one of which the DBA could take to resume the session? (Choose three.)

• A. Add a data file to DATA
• B. Increase U1's quota sufficiently in DATA
• C. Set AUTOEXTEND ON for data files in DATA
• D. Set DEFERRED_SEGMENT_CREATION to TRUE
• E. Drop other U1 objects in DATA
• F. Grant UNLIMITED TABLESPACE to U1

Answer: B,C,D

 

NEW QUESTION 67
The stores table has a column START_DATE of data type DATE, containing the date the row was inserted. You only want to display details of rows where START_DATE is within the last 25 months. Which where clause can be used?

• A. WHERE MON'THS_BETWEEN (SYSDATE, start_date) <= 25
• B. WHERE MON'THS_BETWEEN (start_date, SYSDATE) <= 25
• C. WHERE TO_XUMBER(start_date - SYSDATE) <= 25
• D. WHERE ADD_MONTHS<start_date, 25) <= SYSDATE

Answer: B

 

NEW QUESTION 68
Which three statements are true about data block storage in an Oracle Database?

• A. An index block can contain row data.
• B. A table block must always contain row data.
• C. A data block header is of a fixed length.
• D. Row data is stored starting at the end of the block.
• E. A block header contains a row directory pointing to all rows in the block.

Answer: C,E

 

NEW QUESTION 69
Which two statements are true about the rules of precedence for operators? (Choose two.)

• A. The + binary operator has the highest precedence in an expression in a SQL statement
• B. NULLS influence the precedence of operators in an expression
• C. Arithmetic operators with equal precedence are evaluated from left to right within an expression
• D. Multiple parentheses can be used to override the default precedence of operators in an expression
• E. The concatenation operator | | is always evaluated before addition and subtraction in an expression

Answer: A,D

Explanation:
https://docs.oracle.com/cd/B19306_01/server.102/b14200/operators001.htm

 

NEW QUESTION 70
A database is configured to use automatic undo management with temporary undo enabled.
An UPDATE is executed on a temporary table.
Where is the UNDO stored?

• A. in the PGA
• B. in the undo tablespace
• C. in the SYSAUX tablespace
• D. in the temporary tablespace
• E. in the SGA

Answer: B

 

NEW QUESTION 71
Which two statements are true about the ORDER BY clause when used with a SQL statement containing a SET operator such as UNION? (Choose two.)

• A. Column positions must be used in the ORDER BY clause
• B. Each SELECT statement in the compound query must have its own ORDER BY clause
• C. Each SELECT statement in the compound query can have its own ORDER BY clause
• D. Only column names from the first SELECT statement in the compound query are recognized
• E. The first column in the first SELECT of the compound query with the UNION operator is used by default to sort output in the absence of an ORDER BY clause

Answer: C,D

 

NEW QUESTION 72
Which two are true about shrinking a segment online? (Choose two.)

• A. To shrink a table it must have a UNIQUE KEY constraint
• B. It always eliminates all migrated rows if any exist in the table
• C. To shrink a table it must have row movement enabled
• D. To shrink a table it must have a PRIMARY KEY constraint
• E. It is not possible to shrink either indexes or Index Organized Tables (IOTs)
• F. It must be in a tablespace that uses Automatic Segment Space Management (ASSM)

Answer: C,F

 

NEW QUESTION 73
Which three Oracle database space management features will work with both Dictionary and Locally managed tablespaces? (Choose three.)

• A. Automatic data file extension (AUTOEXTEND)
• B. Online table segment shrink
• C. Online index segment shrink
• D. Oracle Managed Files (OMF)
• E. Capacity planning growth reports based on historical data in the Automatic Workload Repository (AWR)

Answer: A,D,E

 

NEW QUESTION 74
Which three statements are true about time zones, date data types, and timestamp data types in an Oracle database? (Choose three.)

• A. A TIMESTAMP WITH LOCAL TIMEZONE data type column is stored in the database using the time zone of the session that inserted the row
• B. The SESSIONTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
• C. The CURRENT_TIMESTAMP function returns data without time zone information
• D. A TIMESTAMP data type column contains information about year, month, and day
• E. The DBTIMEZONE function can return an offset from Universal Coordinated Time (UTC)

Answer: A,B,E

 

NEW QUESTION 75
Which three statements are true about dropping and unused columns in an Oracle database?
(Choose three.)

• A. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
• B. An UNUSED column's space is reclaimed automatically when the block containing that column is next queried.
• C. A column that is set to UNUSED still counts towards the limit of 1000 columns per table
• D. Partition key columns cannot be dropped.
• E. An UNUSED column's space is reclaimed automatically when the row containing that column is next queried.
• F. A DROP COLUMN command can be rolled back

Answer: A,B,C

 

NEW QUESTION 76
In one of your databases, user KING is:
1. Not a DBA user
2. An operating system (OS) user
Examine this command and its output:

What must you do so that KING is authenticated by the OS when connecting to the database instance?

• A. Grant DBA to KING
• B. Set OS_AUTHEN_PREFIX to OPS$
• C. Alter user KING to be IDENTIFIED EXTERNALLY
• D. Unset REMOTE_LOGIN_PASSWORDFILE
• E. Have the OS administrator add KING to the OSDBA group

Answer: D

 

NEW QUESTION 77
Which two statements are true about the ORDER BY clause when used with a SQL statement containing a SET operator such as UNION? (Choose two.)

• A. Column positions must be used in the ORDER BY clause
• B. Each SELECT statement in the compound query must have its own ORDER BY clause
• C. The first column in the first SELECT of the compound query with the UNION operator is used by default to sort output in the absence of an ORDER BY clause
• D. Only column names from the first SELECT statement in the compound query are recognized
• E. Each SELECT statement in the compound query can have its own ORDER BY clause

Answer: C,D

 

NEW QUESTION 78
Which two queries execute successfully?

• A. SELECT COALESCE (100, 'AM FROM DUAL;
• B. SELECT NULLIF(100,100) FROM DUAL;
• C. SELECT COALESCE(100, NULL, 200) FROM DUAL;
• D. SELECT NULLIF(NULL, 100) FROM DUAL;
• E. SELECT 2TOLLIF(100, 'A') FROM DUAL;

Answer: C

 

NEW QUESTION 79
Which three are types of segments in an Oracle Database? (Choose three.)

• A. clusters
• B. sequences
• C. stored procedures
• D. tables
• E. index
• F. undo

Answer: A,D,E

Explanation:
http://www.adp-gmbh.ch/ora/concepts/segments.html

 

NEW QUESTION 80
Which three statements are true about advanced connection options supported by Oracle Net for connection to Oracle Database instances? (Choose three.)

• A. Source Routing requires the use of a name server
• B. Load Balancing requires the use of a name server
• C. Load Balancing can balance the number of connections to dispatchers when using a Shared Server configuration
• D. Connect Time Failover requires the use of Transparent Application Failover (TAF)
• E. Source Routing enables the use of Connection Manager (CMAN) which enables network traffic to be routed through a firewall
• F. Connect Time Failover requires the connect string to have two or more listener addresses configured

Answer: C,E,F

Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/rilin/shared-server-configuration-for-an-oracle-rac-database.html#GUID-2EFBA08D-FEEE-407F-BC42-E548DA946DF9

 

NEW QUESTION 81
What is true about non-equijoin statement performance? (Choose two.)

• A. The BETWEEN condition always performs less well than using the >= and <= conditions
• B. The join syntax used makes no difference to performance
• C. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax
• D. The BETWEEN condition always performs better than using the >= and <= conditions
• E. Table aliases can improve performance

Answer: C,E

 

NEW QUESTION 82
Examine these commands:

Which two statements are true about the sqlldrexecution? (Choose two.)

• A. It generates a log that contains control file entries, which can be used with normal SQL*Loader operations
• B. It generates a sql script that it uses to load data from EMP.DAT to EMP
• C. It overwrites data in EMP with data in EMP.DAT
• D. It appends data from EMP.DAT to EMP
• E. It uses the database buffer cache to load data

Answer: B,E

 

NEW QUESTION 83
You want to apply the principle of Least Privilege in all your live databases.
One of your requirements is to revoke unnecessary privileges from all users who have them using Privilege Analysis.
Which three types of analyses can be done using the DBMS_PRIVILEGE_CAPTURE package? (Choose three.)

• A. analysis of privileges that a user has on their own schema objects that they did not use
• B. analysis of all privileges used by all users including administrative users in the database
• C. analysis of privileges granted directly to a role that are then used by a user who has been granted that role
• D. analysis of privileges granted indirectly to a role that are then used by a user who has been granted that role
• E. analysis of privileges that a user has on their own schema objects that they did use
• F. analysis of all privileges used by all users but excluding administrative users in the database

Answer: A,B,D

Explanation:
Explanation/Reference: https://docs.oracle.com/database/121/ARPLS/d_priv_prof.htm#ARPLS74328

 

NEW QUESTION 84
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