Most Recent Oracle 1Z0-182 Exam Dumps

Prepare for the Oracle Database 23ai Administration Associate exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Oracle 1Z0-182 exam and achieve success.

The questions for 1Z0-182 were last updated on Mar 30, 2025.

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Question No. 1

Which two statements describe how Optimizer Statistics are collected?

AOptimizer Statistics are collected automatically by an automatic maintenance job that runsduring predefined maintenance windows.

BOptimizer Statistics are collected in real-time as data is inserted, deleted, or updated.

COptimizer Statistics can be manually collected at multiple levels using DBMS_STATS.GATHER_*_STATS PL/SQL procedures.

DOptimizer Statistics are collected by the Statistics Advisor.

EOptimizer Statistics are collected automatically by Automatic Workload Repository (AWR) Snapshot.

Show Answer

Correct Answer: A, C

Optimizer Statistics drive the cost-based optimizer's query plans. Let's dissect each option:

A . Optimizer Statistics are collected automatically by an automatic maintenance job that runs during predefined maintenance windows.

True. Oracle 23ai uses the AutoTask framework to gather stats automatically during maintenance windows (e.g., nightly 10 PM--2 AM). The GATHER_STATS_PROG job, managed by DBMS_AUTO_TASK_ADMIN, collects stats for stale or missing objects.

Mechanics:Controlled by STATISTICS_LEVEL=TYPICAL (default) and the DEFAULT_MAINTENANCE_PLAN. It prioritizes objects with >10% changes (stale stats) or no stats.

Practical Use:Ensures stats are current without manual intervention, critical for dynamic workloads.

Edge Case:Disabled if STATISTICS_LEVEL=BASIC or the job is manually disabled via DBMS_AUTO_TASK_ADMIN.DISABLE.

B . Optimizer Statistics are collected in real-time as data is inserted, deleted, or updated.

False. Stats aren't updated in real-time; this would be too resource-intensive. Instead, Oracle tracks changes (e.g., via DBA_TAB_MODIFICATIONS) and updates stats periodically via AutoTask or manually. Real-time stats exist in 23ai for specific cases (e.g., GATHER_TABLE_STATS with REAL_TIME_STATS), but it's not the default.

Why Incorrect:Real-time collection would degrade performance for OLTP systems, contradicting Oracle's batch approach.

C . Optimizer Statistics can be manually collected at multiple levels using DBMS_STATS.GATHER_*_STATS PL/SQL procedures.

True. The DBMS_STATS package offers granular control: GATHER_TABLE_STATS, GATHER_SCHEMA_STATS, GATHER_DATABASE_STATS, etc., allowing stats collection for tables, schemas, or the entire database.

Mechanics:Example: BEGIN DBMS_STATS.GATHER_TABLE_STATS('HR', 'EMPLOYEES'); END;. Options like ESTIMATE_PERCENT and DEGREE fine-tune the process.

Practical Use:Used for immediate stats updates post-DML or for custom schedules outside maintenance windows.

Edge Case:Overuse can lock stats (e.g., FORCE=TRUE), requiring careful management.

D . Optimizer Statistics are collected by the Statistics Advisor.

False. The Statistics Advisor (new in 23ai) analyzes and recommends stats improvements but doesn't collect them. Collection is still via DBMS_STATS or AutoTask.

Why Incorrect:It's a diagnostic tool, not an executor.

E . Optimizer Statistics are collected automatically by Automatic Workload Repository (AWR) Snapshot.

False. AWR snapshots capture performance metrics (e.g., wait times), not optimizer stats. Stats collection is a separate process via AutoTask or manual commands.

Why Incorrect:AWR and stats collection serve distinct purposes---monitoring vs. optimization.

Question No. 2

Which three statements are true about Enterprise Manager Cloud Control?

AIt is integrated with My Oracle Support.

BIt provides management for Oracle-engineered systems.

CIt provides management for Oracle middleware.

DIt uses a web-based console built into the Oracle database using XML DB.

EIt is available to manage a database only when that database is open.

Show Answer

Correct Answer: A, B, C

A .True. Integrates with MOS for patches and support.

B .True. Manages Exadata, etc.

C .True. Covers WebLogic and other middleware.

D .False. Web-based, but not built into the DB.

E .False. Can manage stopped instances via agents.

Question No. 3

You want to view the initialization parameter settings for only a specific PDB. Which of the following statements is true?

AFrom the PDB, execute SELECT db_uniq_name, pdb_uid, name, value$ FROM pdb_spfile$;

BFrom the CDB root, execute SELECT NAME, VALUE, ISPDB_MODIFIABLE FROM v$parameter;

CFrom the CDB root, execute SELECT db_uniq_name, pdb_uid, name, value$ FROM pdb_spfiles;

DFrom the PDB, execute SELECT NAME, VALUE, ISPDB_MODIFIABLE FROM v$parameter;

Show Answer

Correct Answer: D

A .Incorrect syntax and view (pdb_spfile$ is not a valid view; PDB_SPFILE$ exists but lacks value$).

B .From CDB root, V$PARAMETER shows all parameters, not PDB-specific ones.

C .pdb_spfiles is not a valid view; PDB_SPFILE$ exists but requires scoping to a PDB.

D .True. From the PDB, V$PARAMETER shows parameters specific to that PDB, including inherited and PDB-modified values, with ISPDB_MODIFIABLE indicating alterability.

Question No. 4

You execute this command: [oracle@host01 ~]$ expdp system/oracle FULL=Y DUMPFILE=exp_db_full.dmp PARALLEL=4 LOGFILE=exp_db_full.log JOB_NAME=exp_db_full. 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?

AIt continues to run in the background.

BYou cannot monitor it.

CYou can reattach to it and monitor it.

DIt terminates.

Show Answer

Correct Answer: C, D

A .False. STOP_JOB=IMMEDIATE halts the job, not backgrounds it.

B .False. You can monitor before stopping or after restarting.

C .True. Before stopping, you can reattach with expdp attach=exp_db_full.

D .True. STOP_JOB=IMMEDIATE terminates the job instantly.

Question No. 5

Which three statements are true about row chaining and row migration done by Oracle database block space management?

AA migrated row results in an update to any index on the table to point the row ID in the index to the row's new location.

BUpdate statements can result in one or more migrated rows.

CUpdate statements can result in one or more chained rows.

DRow pieces of a chained row must always reside in different blocks.

EInsert statements can result in a migrated row.

Show Answer

Correct Answer: A, B, C

A .True. Migration updates index ROWIDs.

B .True. Updates can migrate rows if space is insufficient.

C .True. Large updates can chain rows across blocks.

D .False. Chained rows may span blocks but aren't required to.

E .False. Inserts don't migrate; they chain if too large initially.

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