What background do I need before taking the 1Z0-082 exam?

The exam has no formal prerequisites, but Oracle recommends foundational knowledge of database administration concepts, SQL, PL/SQL, and hands-on experience with Oracle Database. Most candidates have worked as junior DBAs or in database support roles for several months before attempting this exam.

How much study time should I plan for 1Z0-082?

Most candidates spend 6 to 12 weeks preparing, depending on prior Oracle experience. Heavy study involves completing the Oracle Database Administration Workshop course, working through all exam objectives, and building hands-on experience with a real or virtual Oracle Database 19c environment.

Which topic in 1Z0-082 is hardest for most candidates?

Managing Storage and Undo tends to challenge candidates most because these topics require understanding both the concepts and the practical parameter tuning. Spending extra time on tablespace creation, segment management, and undo retention configuration will pay off.

What format are the 1Z0-082 questions and how much time do I get?

You get 120 minutes to answer 72 questions in multiple-choice and scenario-based formats. Scenario questions present realistic situations like performance bottlenecks or storage constraints and ask you to select the best administrative action.

Can I retake 1Z0-082 if I fail?

Yes, you can retake the exam. Oracle allows multiple attempts but charges a full exam fee each time. Most training providers recommend waiting at least a few weeks between attempts to allow time for additional study.

Does 1Z0-082 lead to a higher-level certification?

The 1Z0-082 exam grants the Oracle Database Administration I credential. Candidates can advance to the Oracle Certified Professional (OCP) track by passing additional exams such as 1Z0-083, which covers advanced administration topics.

What tools will I need to know for the 1Z0-082 exam?

You must be comfortable with SQL Plus, SQL Developer, Enterprise Manager Cloud Control, Enterprise Manager Database Express, and the Database Configuration Assistant (DBCA). These are the primary interfaces Oracle administrators use in production.

Is 1Z0-082 the right exam for a Database Administrator role?

Yes. 1Z0-082 is the entry-level Database Administration certification and directly matches the skills employers expect from Junior or Associate Database Administrators managing Oracle Database 19c environments. It covers the day-to-day tasks like managing storage, users, and instances.

Oracle 1Z0-082 Practice Exam Questions with Verified Answers

6 Free Questions · Last reviewed: October 8, 2026 · Prepared & Reviewed by the ValidExamDumps Editorial Team

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Exam Code: 1Z0-082
Full Name: Oracle Database Administration I
Issuing Body: Oracle
Question Format (Our Bank): Multiple Choice
Eligibility: No prerequisites
Full Question Set: 142 questions, from $20 50% OFF View full access options

Question 1 Domain 7Configuring Oracle Net Services - Oracle Database: Administration Workshop

Which two statements are true about single row functions? (Choose two.)

AMOD : returns the quotient of a division operation

BFLOOR : returns the smallest integer greater than or equal to a specified number

CTRUNC : can be used with NUMBER and DATE values

DCONCAT : can be used to combine any number of values

ECEIL : can be used for positive and negative numbers

Correct Answer: C, E

Explanation TIMESTAMP WITH LOCAL TIME ZONE stores data in UTC internally but displays it in the session's time zone, making option B correct. The DBTIMEZONE and SESSIONTIMEZONE functions both return time zone offsets from UTC, not just names, so options D and E are true. Option A is incorrect because TIMESTAMP WITH TIME ZONE stores the actual time zone offset with each value, while LOCAL TIME ZONE uses the database's time zone setting. Option C fails because CURRENT_TIMESTAMP reflects the session time zone, not the database time zone.

Question 2 Domain 4Managing Storage - Oracle Database: Administration Workshop

Which statement is true about database links?

APrivate database link creation requires the same user to exist in both the local and the remote databases.

BA public database link can be created only by sys.

CA database link can be created only between two Oracle databases.

DA public database link can be used by a user connected to the local database instance to connect to any schema in the remote database instance.

EA database link created in a database allows a connection from that database's instance to the target database's Instance, but not vice versa.

Correct Answer: D

Explanation SHRINK SPACE COMPACT moves rows to the beginning of the segment to reclaim fragmented space. The key point is that queries and DML statements can continue running during this operation because Oracle maintains data consistency. The shrink doesn't lock out user activity. Other answers miss these specific behaviors. Option about moving rows to empty space at segment start correctly describes the compaction mechanism.

Question 3 Domain 23Managing Schema Objects - Oracle Database: Introduction to SQL

Which three statements are true concerning logical and physical database structures? (Choose three.)

AAll tablespaces may have one or more data files

BThe extents of a segment must always reside in the same datafile

CA smallfile tablespace might be bigger than a bigfile tablespace

DA segment can span multiple data files in some tablespaces

EA segment's blocks can be of different sizes

FA segment might have only one extent

GSegments can span multiple tablespaces

Correct Answer: B, C, F

Question 4 Domain 19Reporting Aggregated Data Using Group Functions - Oracle Database: Introduction to SQL

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

AA full outer join returns matched and unmatched rows

BAn inner join returns matched rows

COuter joins can only be used between two tables per query

DA full outer join must use Oracle syntax

EOuter joins can be used when there are multiple join conditions on two tables

FA left or right outer join returns only unmatched rows

Correct Answer: A, B, F

Explanation Both valid queries properly use GROUP BY with aggregates. Query A groups by prod_id and counts rows where COUNT exceeds 10. Query C also groups by prod_id and counts the prod_id values. Both follow the rule that columns in SELECT must appear in GROUP BY or be aggregated. Invalid options typically violate grouping rules, like selecting ungrouped columns without aggregation or missing required GROUP BY clauses in aggregate queries.

Question 5 Domain 22Managing Sequences, Synonyms, Indexes - Oracle Database: Introduction to SQL

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

AOracle Managed Files (OMF)

BOnline table segment shrink

COnline index segment shrink

DAutomatic data file extension (AUTOEXTEND)

ECapacity planning growth reports based on historical data in the Automatic Workload Repository (AWR)

Correct Answer: A, D, E

Explanation Synonyms are database objects with object numbers like other objects, so they have identifiers in the data dictionary. A synonym can also point to another synonym, creating a chain of references. This is allowed in Oracle. The incorrect answers likely suggest synonyms can't have object numbers or can't reference other synonyms, which are false limitations.

Question 6 Domain 8Managing Tablespaces and Datafiles - Oracle Database: Administration Workshop

Examine the description of the employees table:

Which query requires explicit data type conversion?

ASELECT join_date FROM employees WHERE join_date > '10-02-2018';

BSELECT join_date I I ' ' II salary FROM employees;

CSELECT SUBSTR<join_date, 1, 2) - 10 FROM employees;

DSELECT join_date + '20' FROM employees; SELECT salary * '120.50' FROM employees;

Correct Answer: A

Explanation When you create a tablespace without explicitly setting AUTOEXTEND OFF, the datafile defaults to AUTOEXTEND being enabled. This means the datafile can automatically expand. However, because the tablespace was created with only one datafile specified and no mention of adding more, additional datafiles cannot be added to this tablespace. The remaining incorrect options would typically claim the opposite or suggest different constraints on the tablespace.

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Domain 1: Understanding Oracle Database Architecture - Oracle Database: Administration Workshop

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

Domain 2: Managing Database Instances - Oracle Database: Administration Workshop

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

Domain 3: Managing Users, Roles and Privileges - Oracle Database: Administration Workshop

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

Domain 4: Managing Storage - Oracle Database: Administration Workshop

Managing Resumable Space Allocation; Shrinking Segments; Deferring Segment Creation; Using Space-Saving Features; Deploying Oracle Database Space Management Features; Managing Different Types of Segments; Using Table and Row Compression; Understanding Block Space Management

Sample question from this domain above: Q2

Domain 6: Accessing an Oracle Database with Oracle supplied Tools - Oracle Database: Administration Workshop

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

Domain 7: Configuring Oracle Net Services - Oracle Database: Administration Workshop

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

Sample question from this domain above: Q1

Domain 8: Managing Tablespaces and Datafiles - Oracle Database: Administration Workshop

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

Sample question from this domain above: Q6

Domain 9: Managing Undo - Oracle Database: Administration Workshop

Understanding Transactions and Undo Data; Storing Undo Information; Configuring Undo Rentention; Comparing Undo Data and Redo Data; Understanding Temporary Undo

Domain 10: Restricting and Sorting Data - Oracle Database: Introduction to SQL

Applying Rules of precedence for operators in an expression; Limiting Rows Returned in a SQL Statement; Using Substitution Variables; Using the DEFINE and VERIFY commands

Domain 11: Using Conversion Functions and Conditional Expressions - Oracle Database: Introduction to SQL

Applying the NVL, NULLIF, and COALESCE functions to data; Understanding implicit and explicit data type conversion; Using the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions; Nesting multiple functions

Domain 12: Displaying Data from Multiple Tables Using Joins - Oracle Database: Introduction to SQL

Using Self-joins; Using Various Types of Joins; Using Non equijoins; Using OUTER joins

Domain 13: Using SET Operators - Oracle Database: Introduction to SQL

Matching the SELECT statements; Using the ORDER BY clause in set operations; Using The INTERSECT operator; Using The MINUS operator; Using The UNION and UNION ALL operators

Domain 16: Managing Data in Different Time Zones - Oracle Database: Introduction to SQL

Working with CURRENT_DATE, CURRENT_TIMESTAMP,and LOCALTIMESTAMP; Working with INTERVAL data types

Domain 17: Retrieving Data using the SQL SELECT Statement - Oracle Database: Introduction to SQL

Using Column aliases; Using The DESCRIBE command; Using The SQL SELECT statement; Using concatenation operator, literal character strings, alternative quote operator, and the DISTINCT keyword; Using Arithmetic expressions and NULL values in the SELECT statement

Domain 18: Using Single-Row Functions to Customize Output - Oracle Database: Introduction to SQL

Manipulating strings with character functions in SQL SELECT and WHERE clauses; Performing arithmetic with date data; Manipulating numbers with the ROUND, TRUNC and MOD functions; Manipulating dates with the date function

Domain 19: Reporting Aggregated Data Using Group Functions - Oracle Database: Introduction to SQL

Restricting Group Results; Creating Groups of Data; Using Group Functions

Sample question from this domain above: Q4

Domain 22: Managing Sequences, Synonyms, Indexes - Oracle Database: Introduction to SQL

Managing Indexes; Managing Synonyms; Managing Sequences

Sample question from this domain above: Q5

Domain 23: Managing Schema Objects - Oracle Database: Introduction to SQL

Creating and using temporary tables; Managing constraints

Sample question from this domain above: Q3

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