1Z0-082 Exam Info and Free Practice Test Professional Quiz Study Materials [Q78-Q99]

1Z0-082 Exam Info and Free Practice Test Professional Quiz Study Materials

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

Managing Database Instances - Oracle Database: Administration Workshop

• Using the Automatic Diagnostic Repository (ADR)
• Shutting Down Oracle Database Instances
• Starting Up Oracle Database Instances
• Managing Initialization Parameter Files
• Using Data Dictionary Views

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

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

Managing Storage - Oracle Database: Administration Workshop

• Managing Resumable Space Allocation
• Deploying Oracle Database Space Management Features
• Using Table and Row Compression
• Managing Different Types of Segments

Moving Data - Oracle Database: Administration Workshop

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

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

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

Configuring Oracle Net Services - Oracle Database: Administration Workshop

• Using Oracle Net Services Administration Tools
• Comparing Dedicated and Shared Server Configurations
• Administering Naming Methods
• Connecting to an Oracle Database Instance
• Configuring Communication Between Database Instances

Managing Tablespaces and Datafiles - Oracle Database: Administration Workshop

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

Managing Undo - Oracle Database: Administration Workshop

• Restricting and Sorting Data - Oracle Database: Introduction to SQL
• Configuring Undo Retention
• Using the DEFINE and VERIFY commands
• Applying Rules of precedence for operators in an expression
• Comparing Undo Data and Redo Data
• Limiting Rows Returned in a SQL Statement
• Using Substitution Variables
• Understanding Temporary Undo
• Understanding Transactions and Undo Data

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

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

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

• Managing Schema Objects - Oracle Database: Introduction to SQL
• Managing Database Transactions
• Creating Groups of Data
• Managing Tables using DML statements - Oracle Database: Introduction to SQL
• Using Group Functions
• Creating and using temporary tables
• Using Subqueries to Solve Queries - Oracle Database: Introduction to SQL
• Using Single-Row Subqueries
• Managing Indexes

 

NEW QUESTION 78
Which two statements are true about the Automatic Diagnostic Repository (ADR)? (Choose two.)

• A. It supports diagnostics for Automatic Storage Management (ASM)
• B. It supports diagnostics for Oracle Clusterware
• C. It is held inside an Oracle database schema
• D. The ADR base defaults to $ORACLE_HOME/dbs if the DIAGNOSTIC_DEST parameter and the ORACLE_BASE environment variable are not set
• E. The ADR base defaults to $ORACLE_HOME/rdbms/admin if neither DIAGNOSTIC_DEST nor ORACLE_BASE is set

Answer: C,E

Explanation:
https://docs.oracle.com/cd/E11882_01/install.112/e27508/admin.htm

 

NEW QUESTION 79
You want to use table compression suitable for OLTP that will:
1. Compress rows for all DML statements on that table
2. Minimize the overheads associated with compression
Which compression option is best suited for this?

• A. COLUMN STORE COMPRESS FOR ARCHIVE HIGH
• B. ROW STORE COMPRESS BASIC
• C. COLUMN STORE COMPRESS FOR QUERY LOW
• D. ROW STORE COMPRESS ADVANCED
• E. COLUMN STORE COMPRESS FOR ARCHIVE LOW

Answer: D

Explanation:
https://www.oracle.com/technetwork/database/options/compression/advanced-compression- wp-
12c-1896128.pdf

 

NEW QUESTION 80
You want to use table compression suitable for OLTP that will:
Compress rows for all DML statements on that table
Minimize the overheads associated with compression
Which compression option is best suited for this?

• A. COLUMN STORE COMPRESS FOR ARCHIVE HIGH
• B. ROW STORE COMPRESS BASIC
• C. COLUMN STORE COMPRESS FOR QUERY LOW
• D. ROW STORE COMPRESS ADVANCED
• E. COLUMN STORE COMPRESS FOR ARCHIVE LOW

Answer: D

Explanation:
Reference:
https://www.oracle.com/technetwork/database/options/compression/advanced-compression-wp-12c-1896128.pdf

 

NEW QUESTION 81
Which two tasks can be performed in the NOMOUNT state? (Choose two.)

• A. re-creating control files
• B. enabling online redo log archiving
• C. full database recovery
• D. renaming data files
• E. creating a database

Answer: A,E

 

NEW QUESTION 82
Which three statements are true about time zones, date data types, and timestamp data types in an Oracle database? (Choose three.)

• A. The DBTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
• 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. A TIMESTAMP WITH LOCAL TIMEZONE data type column is stored in the database using the time zone of the session that inserted the row

Answer: A,B,C

 

NEW QUESTION 83
Which three statements are true about inner and outer joins? (Choose three.)

• A. A full outer join returns matched and unmatched rows
• B. An inner join returns matched rows
• C. Outer joins can be used when there are multiple join conditions on two tables
• D. Outer joins can only be used between two tables per query
• E. A full outer join must use Oracle syntax
• F. A left or right outer join returns only unmatched rows

Answer: A,B,F

Explanation:
https://www.studytonight.com/dbms/joining-in-sql.php

 

NEW QUESTION 84
Which three statements are true about the Oracle join and ANSI join syntax? (Choose three.)

• A. The Oracle join syntax performs less well than the SQL:1999 compliant ANSI join syntax
• B. The SQL:1999 compliant ANSI join syntax supports natural joins
• C. The Oracle join syntax only supports right outer joins
• D. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax
• E. The Oracle join syntax supports natural joins
• F. The SQL:1999 compliant ANSI join syntax supports creation of a Cartesian product of two tables
• G. The Oracle join syntax supports creation of a Cartesian product of two tables

Answer: B,E,F

 

NEW QUESTION 85
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. Each SELECT statement in the compound query must have its own ORDER BY clause
• B. Column positions must be used in the ORDER BY clause
• C. Only column names from the first SELECT statement in the compound query are recognized
• D. 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
• E. Each SELECT statement in the compound query can have its own ORDER BY clause

Answer: C,D

 

NEW QUESTION 86
In the spfile of a single instance database, LOCAL_LISTENER is set to LISTENER_1.
The TNSNAMES.ORA file in $ORACLE_HOME/network/admin in the database home contains:

Which statement is true?

• A. LISTENER_1 must also be defined in the LISTENER.ORA file to enable dynamic service registration
• B. There are two listeners named LISTENER and LISTENER_1 running simultaneously using port
  1521 on the same host as the database instances
• C. The definition for LISTENER_1 requires a CONNECT_DATA section to enable dynamic service registration
• D. The LREG process registers services dynamically with the LISTENER_1 listener
• E. Dynamic service registration cannot be used for this database instance

Answer: A

Explanation:
https://docs.oracle.com/database/121/NETAG/listenercfg.htm#NETAG292

 

NEW QUESTION 87
Which two statements are true about trace files produced by the Oracle Database server? (Choose two.)

• A. They can be written by background processes
• B. All trace files contain error information that require contacting Oracle Support
• C. Trace files are written to the Fast Recovery Area (FRA)
• D. They can be written by server processes
• E. Trace file names are based on the database name concatenated with a sequential number

Answer: A,D

 

NEW QUESTION 88
Which three statements are true about dropping and unused columns in an Oracle database?
(Choose three.)

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

Answer: A,C,F

 

NEW QUESTION 89
Examine this command and some partial output:

Why does the DB01.abc.comservice show unknown status?

• A. The service DB01.abc.com is statically registered
• B. The service DB01.abc.com is dynamically registered
• C. The LOCAL_LISTENER database parameter is not set to a service name that refers to LISTENER_1
• D. The SID_LIST_LISTENER section is not contained in the LISTENER.ORA file
• E. The listener is not listening on the default port 1521

Answer: C

 

NEW QUESTION 90
Evaluate these commands which execute successfully:

Which two statements are true about the ORD_ITEMS table and the ORD_SEQ sequence? (Choose two.)

• A. Column ORD_NO gets the next number from sequence ORD_SEQ whenever a row is inserted into ORD_ITEMS and no explicit value is given for ORD_NO
• B. Sequence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 times
• C. Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ
• D. Sequence ORD_SEQ is guaranteed not to generate duplicate numbers
• E. If sequence ORD_SEQ is dropped then the default value for column ORD_NO will be NULL for rows inserted into ORD_ITEMS

Answer: C,D

 

NEW QUESTION 91
Which two are true about a SQL statement using SET operators such as UNION? (Choose two.)

• A. The names and number of columns must be identical for all SELECT statements in the query.
• B. The data type of each column returned by the second query must exactly match the data type of the corresponding column returned by the first query.
• C. The data type group of each column returned by the second query must match the data type of the corresponding column returned by the first query.
• D. The number, but not names, of columns must be identical for all SELECT statements in the query.
• E. The data type of each column returned by the second query must be implicitly convertible to the data type of the corresponding column returned by the first query.

Answer: B,E

 

NEW QUESTION 92
Which three statements are true about views in an Oracle database? (Choose three.)

• A. Data Manipulation Language (DML) can always be used on views
• B. Views can be updated without the need to re-grant privileges on the view
• C. Deleting one or more rows using a view whose defining query contains a GROUP BY clause will cause an error
• D. Tables in the defining query of a view must always exist in order to create the view
• E. Inserting one or more rows using a view whose defining query contains a GROUP BY clause will cause an error
• F. The WITH CHECK clause prevents certain rows from being updated or inserted
• G. The WITH CHECK clause prevents certain rows from being displayed when querying the view

Answer: B,C,E

 

NEW QUESTION 93
Which three statements are true about Oracle synonyms? (Choose three.)

• A. A synonym created by one user can refer to an object belonging to another user
• B. Any user can drop a PUBLIC synonym
• C. A synonym cannot be created for a PL/SQL package
• D. A SEQUENCE can have a synonym
• E. A synonym can be available to all users

Answer: A,D,E

Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_7001.htm

 

NEW QUESTION 94
Examine the description of the EMPLOYEES table:

Which query is valid?

• A. SELECT dept_id, AVG(MAX(salary)) FROM employees GROUP BY dept_id;
• B. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;
• C. SELECT dept_id, MAX(AVG(salary)) FROM employees GROUP BY dept_id;
• D. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id, join_date;

Answer: B

 

NEW QUESTION 95
Which two statements are true about the WHERE and HAVING clauses in a SELECT statement? (Choose two.)

• A. WHERE and HAVING clauses can be used in the same statement only if applied to different table columns
• B. The WHERE clause can be used to exclude rows before dividing them into groups
• C. The HAVING clause can be used with aggregating functions in subqueries
• D. The WHERE clause can be used to exclude rows after dividing them into groups
• E. Aggregating functions and columns used in HAVING clauses must be specified in the SELECT list of a query

Answer: B,C

 

NEW QUESTION 96
The EMPLOYEES table contains columns EMP_ID of data type NUMBER and HIRE_DATE of data type DATE.
You want to display the date of the first Monday after the completion of six months since hiring.
The NLS_TERRITORY parameter is set to AMERICA in the session and, therefore, Sunday is the first day on the wee.
Which query can be used?

• A. SELECT emp_id, NEXT_DAY(ADD_MONTHS(hire_date, 6), 1) FROM employees;
• B. SELECT emp_id, ADD_MONTHS(hire_date, 6), NEXT_DAY('MONDAY') FROM employees;
• C. SELECT emp_id, NEXT_DAY(ADD_MONTHS(hire_date, 6), 'MONDAY') FROM employees;
• D. SELECT emp_id, NEXT_DAY(MONTHS_BETWEEN(hire_date, SYSDATE), 6) FROM employees;

Answer: C

 

NEW QUESTION 97
Which three statements are true regarding indexes? (Choose three.)

• A. An update to a table can result in updates to any or all of the table's indexes
• B. A SELECT statement can access one or more indices without accessing any tables
• C. A table belonging to one user can have an index that belongs to a different user
• D. When a table is dropped and is moved to the RECYCLE BIN, all indexes built on that table are permanently dropped
• E. An update to a table can result in no updates to any of the table's indexes
• F. A UNIQUE index can be altered to be non-unique

Answer: C,D,F

Explanation:
https://docs.oracle.com/cd/A87860_01/doc/server.817/a76956/indexes.htm
https://docs.oracle.com/cd/B10501_01/server.920/a96521/indexes.htm

 

NEW QUESTION 98
Your database instance is started with a PFILE.
Examine these parameters:

You want to increase the size of the buffer cache.
Free memory is available to increase the size of the buffer cache.
You execute the command:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M;
What is the outcome?

• A. The value is changed for the current instance and in the PFILE
• B. It fails because the SCOPE clause is missing
• C. The value is changed only in the PFILE and takes effect at the next instance startup
• D. Change is applied to the current instance, but does not persist after instance restart

Answer: D

Explanation:
https://docs.oracle.com/database/121/SQLRF/statements_2017.htm#SQLRF00902

 

NEW QUESTION 99
......

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