Free Oracle 1Z0-084 Exam Actual Questions & Explanations

Last updated on: Jul 14, 2026
Author: Victoria Rossi (Oracle Database Performance Specialist)

The Oracle 1Z0-084 exam validates your expertise in Oracle Database 19c performance management and tuning. This certification is designed for database administrators, performance engineers, and architects who need to optimize Oracle Database environments for speed, reliability, and cost efficiency. This landing page provides a structured overview of the exam syllabus, question formats, and actionable preparation strategies to help you pass with confidence. Whether you're new to performance tuning or building on existing knowledge, this guide maps the core topics and connects them to real-world scenarios you'll encounter in production systems.

1Z0-084 Exam Syllabus & Core Topics

Use this topic map to guide your study for Oracle 1Z0-084 (Oracle Database 19c: Performance Management and Tuning) within the Oracle Database path.

  • Basic Tuning Methods and Diagnostics: Understand foundational approaches to identify and resolve performance bottlenecks using Oracle's built-in diagnostic tools and methodologies.
  • Influencing the Optimizer: Learn how to guide the Oracle query optimizer toward better execution plans through hints, statistics, and parameter adjustments.
  • Reducing the Cost of SQL Operations: Analyze and refactor SQL statements to minimize resource consumption and execution time in high-volume environments.
  • Tuning the PGA: Configure and manage Program Global Area settings to optimize memory allocation for sort operations and hash joins.
  • Using In-Memory Features: Leverage Oracle's In-Memory column store to accelerate analytical queries and reduce disk I/O.
  • Using Real Application Testing: Employ RAT tools to capture, replay, and analyze production workloads before deploying changes to live systems.
  • SQL Performance Management: Monitor, baseline, and tune SQL statements across the database lifecycle using automated and manual methods.
  • Tuning the Shared Pool: Manage library cache, dictionary cache, and reserved space to prevent contention and improve statement reuse.
  • Tuning the Buffer Cache: Optimize data block caching strategies, including touch count policies and separation of hot and cold data.
  • Using Automatic Memory Management: Configure and monitor automatic memory allocation features that balance SGA and PGA dynamically.
  • Performing Oracle Database Application Monitoring: Track application-level metrics and identify performance issues at the code and session level.
  • Identifying Problem SQL Statements: Use AWR, Statspack, and other tools to pinpoint long-running and resource-intensive queries.
  • Using Log and Trace Files to Monitor Performance: Interpret alert logs, trace files, and diagnostic data to troubleshoot performance degradation.
  • Using Metrics, Alerts and Baselines: Establish performance baselines and configure alerts to detect anomalies and deviations from normal behavior.
  • Using AWR-Based Tools: Leverage Automatic Workload Repository reports and analysis to understand system load, trends, and bottlenecks.
  • Using Statspack: Deploy Statspack for historical performance data collection and comparison in environments where AWR is unavailable.

Question Formats & What They Test

The 1Z0-084 exam measures both theoretical knowledge and practical problem-solving ability through a mix of question styles. You will encounter items that test your understanding of performance concepts, your ability to interpret diagnostic data, and your judgment in selecting tuning strategies for specific scenarios.

  • Multiple Choice: Core definitions, feature behavior, tool capabilities, and key terminology related to performance management and tuning.
  • Scenario-Based Items: Real-world cases where you analyze performance symptoms, review diagnostic output, and recommend the most appropriate tuning action.
  • Matching and Ordering: Connect tuning techniques to specific bottlenecks, or sequence diagnostic and remediation steps in logical order.

Questions progress from foundational concepts to complex decision-making, reflecting the depth of knowledge required to manage performance in production Oracle Database environments.

Preparation Guidance

An efficient study plan maps each topic to weekly milestones and alternates between learning, practice, and review cycles. This approach builds both breadth of knowledge and depth of understanding across diagnostic tools, tuning techniques, and real-world application scenarios. Dedicate time to hands-on labs and mock exams to reinforce concepts and develop confidence.

  • Map each topic (Basic Tuning Methods and Diagnostics, Influencing the Optimizer, Reducing the Cost of SQL Operations, Tuning the PGA, Using In-Memory Features, Using Real Application Testing, SQL Performance Management, Tuning the Shared Pool, Tuning the Buffer Cache, Using Automatic Memory Management, Performing Oracle Database Application Monitoring, Identifying Problem SQL Statements, Using Log and Trace Files to Monitor Performance, Using Metrics, Alerts and Baselines, Using AWR-Based Tools, Using Statspack) to weekly study goals and track your progress against each domain.
  • Work through practice question sets in topic order; review detailed explanations to understand why correct answers work and why distractors are incorrect.
  • Connect tuning concepts across the full lifecycle: diagnostics lead to root cause analysis, which informs tuning decisions, which require validation through testing and monitoring.
  • Complete a timed, full-length mock exam under realistic conditions to build pacing, reduce test anxiety, and identify remaining weak areas.
  • In your final week, review high-weight topics and re-do questions you answered incorrectly to cement understanding.

Explore other Oracle certifications: view all Oracle exams.

Get the PDF & Practice Test

Strengthen your preparation with up-to-date resources from validexamdumps.com. These materials align to 1Z0-084 and cover practical scenarios with clear explanations.

  • Q&A PDF with explanations: Topic-mapped questions that clarify why correct options are right and others aren't, with context for each answer.
  • Practice Test: Realistic items, timed and untimed modes, progress tracking, and detailed review of your performance across each domain.
  • Focused coverage: Aligned to Basic Tuning Methods and Diagnostics, Influencing the Optimizer, Reducing the Cost of SQL Operations, Tuning the PGA, Using In-Memory Features, Using Real Application Testing, SQL Performance Management, Tuning the Shared Pool, Tuning the Buffer Cache, Using Automatic Memory Management, Performing Oracle Database Application Monitoring, Identifying Problem SQL Statements, Using Log and Trace Files to Monitor Performance, Using Metrics, Alerts and Baselines, Using AWR-Based Tools, and Using Statspack, so you study what matters most.
  • Regular updates: Content refreshes that reflect syllabus changes and new Oracle Database 19c features.

Visit the exam page to download the PDF, Online Practice Test, or get a Bundle Discount offer for both formats: Oracle Database 19c: Performance Management and Tuning.

Frequently Asked Questions

Which topics carry the most weight on the 1Z0-084 exam?

SQL Performance Management, Identifying Problem SQL Statements, and AWR-Based Tools typically account for a significant portion of the exam, as they directly address the most common performance challenges in production environments. Basic Tuning Methods and Diagnostics also appear frequently because they form the foundation for all other tuning activities. Focus your study time proportionally on these high-impact domains while ensuring you have working knowledge of all topics.

How do diagnostic tools like AWR, Statspack, and trace files connect in a real workflow?

In practice, you start with AWR or Statspack to identify top resource consumers and time-based trends, then drill into specific SQL statements using diagnostic views and trace files to understand execution plans and wait events. This layered approach moves from system-wide perspective to SQL-level detail, helping you isolate root causes and validate fixes. Understanding how these tools complement each other is essential for scenario-based questions on the exam.

How much hands-on experience with Oracle Database 19c is needed to pass?

While the exam does not require you to perform live tuning during the test, hands-on experience significantly improves your ability to answer scenario-based questions correctly. Prioritize labs that involve running diagnostic queries, interpreting AWR reports, adjusting memory parameters, and analyzing execution plans. Even a few hours of practical work with these tools will build intuition that helps you eliminate wrong answers quickly.

What are common mistakes that lead to lost points on this exam?

Many candidates confuse similar tuning techniques (e.g., PGA tuning vs. Shared Pool tuning) or misunderstand when to apply each method. Others overlook the importance of establishing baselines before tuning, leading to incorrect answers about how to measure improvement. Additionally, some candidates underestimate the weight of diagnostic interpretation; practice reading AWR and Statspack output carefully to avoid misreading data.

What is the best strategy for the final week before the exam?

Focus on high-weight topics and re-attempt questions you previously answered incorrectly to understand the concepts you're still unsure about. Take one full-length timed mock exam to simulate test conditions and refine your pacing. Avoid cramming new material; instead, review summary notes and reinforce weak areas through targeted practice questions. Get adequate sleep the night before the exam to ensure mental clarity.

Question No. 1

You are informed that the RMAN session that is performing the database duplication is much slower than usual. You want to know the approximate time when the rman operation will be completed.

Which view has this information?

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Correct Answer: D

In Oracle Database, the V$SESSION_LONGOPS view provides insights into various operations within the database that are expected to take more than six seconds to complete. These include operations related to RMAN (Recovery Manager), such as database duplication tasks. This view displays information about the progress of these long-running operations, including the start time, elapsed time, and estimated time to completion.

When an RMAN session is performing a database duplication and is observed to be slower than usual, checking the V$SESSION_LONGOPS view can give an approximation of when the RMAN operation might complete. This view includes fields like TIME_REMAINING and ELAPSED_SECONDS that help in estimating the completion time of the operation based on its current progress.


Oracle Database Reference: V$SESSION_LONGOPS

Oracle Database Backup and Recovery User's Guide: Monitoring RMAN Jobs

Question No. 2

Which application lifecycle phase could be managed reactively?

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Correct Answer: D

The production phase of the application lifecycle is often managed reactively. While proactive measures and performance tuning are essential, unforeseen issues can arise in production that require immediate attention and resolution. Reactive management involves monitoring performance and responding to issues as they occur, ensuring the application maintains acceptable performance levels for end-users.

Reference

Oracle Database 19c Performance Tuning Guide - Reactive Tuning


Question No. 3

18. The application provider has given full indications regarding the procedure to collect statistics.

To reduce the space used in the SYSAUX tablespace, you want to prevent the optimizer statistics Advisor from running.

Which method will allow you to do this?

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Correct Answer: B

The Oracle Optimizer statistics advisor, which is part of the automated tasks framework, can be disabled using the DBMS_AUTO_TASK_ADMIN package. This will prevent it from running and thus reduce space usage in the SYSAUX tablespace. Reference:

Oracle Database PL/SQL Packages and Types Reference, 19c


Question No. 4

Which Optimizer component helps decide whether to use a nested loop join or a hash join in an adaptive execution plan?

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Correct Answer: C

In an adaptive execution plan, the Optimizer makes runtime decisions between nested loop and hash joins using a statistics collector. The collector is a row source that collects statistics about the rows it processes and can adapt the plan based on the number of rows processed.


Oracle Database SQL Tuning Guide, 19c

Question No. 5

Which three statements are true about server-generated alerts?

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Correct Answer: A, C, F

Server-generated alerts in Oracle Database are designed to notify DBAs and other administrators about issues within the database environment. These alerts can be triggered by a variety of conditions, including threshold-based metrics and specific events such as ORA- error messages. Here's how these options align with the statements provided:

A (True): Server-generated alerts are indeed notifications from the Oracle Database Server that highlight existing or impending issues. These alerts are part of Oracle's proactive management capabilities, designed to inform administrators about potential problems before they escalate.

C (True): These alerts are logged in the alert log of the Oracle Database. The alert log is a crucial diagnostic tool that records major events and changes in the database, including server-generated alerts. This log is often the first place DBAs look when troubleshooting database issues.

F (True): Server-generated alerts may include suggestions for correcting identified problems. Oracle Database often provides actionable advice within these alerts to assist in resolving issues more efficiently. These suggestions can range from adjusting configuration parameters to performing specific maintenance tasks.

Options B, D, and E do not accurately describe server-generated alerts:

B (False): While the statement might have been true in some contexts, Oracle's server-generated alerts often include corrective suggestions, making this statement incorrect.

D (False): Server-generated alerts can be viewed from various interfaces, not just the Cloud Control Database home page. They are accessible through Enterprise Manager, SQL Developer, and directly within the database alert log, among other tools.

E (False): While it's true that threshold settings for some alerts can be modified, the method specified, using DBMS_SERVER_ALERT, is not correct. Threshold settings are typically adjusted through Enterprise Manager or by modifying specific initialization parameters directly.


Oracle Database Documentation: Oracle Database 19c: Performance Management and Tuning

Oracle Base: Alert Log and Trace Files

Oracle Support: Understanding and Managing Server-Generated Alerts