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| Topic |
Details |
| Topic 1 |
- Configuring Oracle Net Services: This section measures the skills of Network Administrators and Database Administrators in configuring Oracle Net Services. It includes identifying administration components, describing connection methods, and ensuring seamless communication between clients and databases.
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| Topic 2 |
- Displaying Creating and Managing PDBs: This section assesses the knowledge of Cloud Database Architects in creating pluggable databases (PDBs) from seeds or other techniques. It also covers modifying PDB modes and attributes to meet specific application requirements.
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| Topic 3 |
- Managing Users, Roles, and Privileges: This domain evaluates the expertise of Security Administrators in implementing user security measures. It focuses on creating and managing users, roles, and privileges to ensure secure access to Oracle databases.
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| Topic 4 |
- Introduction to Performance: This section evaluates the expertise of Performance Analysts in summarizing Oracle database performance management techniques. It includes measuring database performance using SQL execution plans, directives, and advisors to ensure optimal system efficiency.
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| Topic 5 |
- Managing Storage: This section tests the knowledge of Storage Engineers in managing storage features such as resumable space allocation, segment space-saving, and block space management. It also includes defining segment characteristics to optimize storage utilization.
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| Topic 6 |
- Employ Oracle-Supplied Database Tools: This section evaluates the abilities of Database Engineers and Support Specialists in identifying and using Oracle-supplied tools for managing databases. It focuses on leveraging tools to monitor, troubleshoot, and optimize database performance effectively.
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| Topic 7 |
- Managing Tablespaces and Datafiles: This section assesses the abilities of Storage Administrators in creating, modifying, and describing tablespaces. It also covers recognizing data storage requirements and understanding datafile placement for efficient storage management.
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| Topic 8 |
- Managing Undo: This domain measures the skills of Database Administrators in using undo data effectively. It compares undo data with redo data and explains temporary undo usage for efficient transaction management.
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| Topic 9 |
- Introduction to Auditing: This domain tests the abilities of Compliance Specialists in implementing database auditing practices. It includes creating, modifying, and maintaining auditing policies while applying value-based auditing techniques like Fine-Grained Auditing (FGA).
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| Topic 10 |
- Describe Oracle Database Architecture: This section of the exam measures the skills of Database Administrators and System Architects in understanding the Oracle database architecture. It covers the configurations of Oracle database instances, memory structures like SGA and PGA, and process structures such as background processes. It also explains the logical and physical database structures, including datafiles, control files, and redo log files.
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| Topic 11 |
- Automated Maintenance: This section measures the skills of Database Administrators in describing automated maintenance tasks within Oracle databases. It focuses on applying automated features to streamline routine maintenance activities.
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Oracle Database 23ai Administration Associate Sample Questions (Q47-Q52):
NEW QUESTION # 47
In one of your databases, you create a user, HR, and then execute this command: GRANT CREATE SESSION TO hr WITH ADMIN OPTION; Which three actions can HR perform?
- A. Execute DDL statements in the HR schema.
- B. Execute DML statements in the HR schema.
- C. Revoke the CREATE SESSION privilege from user HR.
- D. Revoke the CREATE SESSION privilege from other users.
- E. Grant the CREATE SESSION privilege with ADMIN OPTION to other users.
- F. Log in to the database instance.
Answer: D,E,F
Explanation:
A .False. CREATE SESSION doesn't grant DML rights.
B .True. CREATE SESSION allows login.
C .True. WITH ADMIN OPTION allows revoking from others HR granted it to.
D .True. WITH ADMIN OPTION permits granting with the same option.
E .False. Users can't revoke their own privileges.
F .False. DDL requires additional privileges (e.g., CREATE TABLE).
NEW QUESTION # 48
Which two statements describe how Optimizer Statistics are collected?
- A. Optimizer Statistics are collected automatically by Automatic Workload Repository (AWR) Snapshot.
- B. Optimizer Statistics are collected automatically by an automatic maintenance job that runsduring predefined maintenance windows.
- C. Optimizer Statistics are collected by the Statistics Advisor.
- D. Optimizer Statistics can be manually collected at multiple levels using DBMS_STATS.GATHER_*_STATS PL/SQL procedures.
- E. Optimizer Statistics are collected in real-time as data is inserted, deleted, or updated.
Answer: B,D
Explanation:
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.
NEW QUESTION # 49
Which three statements are true about UNDO and REDO?
- A. UNDO is used for read consistency.
- B. Both REDO and UNDO can be multiplexed.
- C. REDO is used for read consistency.
- D. REDO is used for instance recovery.
- E. REDO is used for ROLLBACK.
- F. UNDO is used for some flashback operations.
Answer: A,D,F
Explanation:
A . REDO is used for read consistency.False. Read consistency is achieved using UNDO, which provides a consistent view of data as of a specific point in time. REDO logs changes for recovery, not consistency.
B . UNDO is used for some flashback operations.True. Flashback features like Flashback Query and Flashback Table rely on UNDO to reconstruct past states of data.
C . UNDO is used for read consistency.True. UNDO stores pre-change data, enabling multi-version read consistency for queries.
D . Both REDO and UNDO can be multiplexed.False. REDO logs can be multiplexed (mirrored across multiple destinations), but UNDO is managed within a single UNDO tablespace per instance (though it can have multiple data files).
E . REDO is used for ROLLBACK.False. ROLLBACK uses UNDO to revert changes; REDO logs the changes but isn't used to undo them.
F . REDO is used for instance recovery.True. REDO logs are replayed during instance recovery to reapply committed changes after a crash.
NEW QUESTION # 50
Which three statements are true about using SQL*Plus?
- A. It can run scripts passed to it by a shell script.
- B. It has its own commands that are separate from any SQL statements.
- C. It has both command-line and graphical user interfaces (GUI).
- D. It must be downloaded from the Oracle Technology Network (OTN).
- E. It can run Recovery Manager (RMAN) commands.
- F. It can run scripts entered at the SQL prompt.
Answer: A,B,F
Explanation:
A .True. sqlplus @script.sql works from shell scripts.
B .False. RMAN uses its own client, not SQL*Plus.
C .False. Bundled with Oracle DB software.
D .False. Command-line only; no GUI in 23ai.
E .True. @script runs scripts interactively.
F .True. Commands like SHOW PARAMETER are unique.
NEW QUESTION # 51
In which two ways would you disable timing information collected for wait events and much of the performance monitoring capability of the database?
- A. By setting the TIMED_STATISTICS system parameter to FALSE.
- B. By executing the PL/SQL procedure DBMS_TIME_STATISTIC.LEVEL(BASIC).
- C. By setting the TIMED_STATISTICS_LEVEL system parameter to FALSE.
- D. By executing the PL/SQL procedure DBMS_TIME_STATISTIC.DISABLE(TRUE).
- E. By setting the STATISTICS_LEVEL parameter to BASIC.
Answer: A,E
Explanation:
A .True. TIMED_STATISTICS = FALSE disables timing data collection.
B .False. No such procedure exists.
C .False. No TIMED_STATISTICS_LEVEL parameter exists.
D .True. STATISTICS_LEVEL = BASIC disables most performance monitoring.
E .False. No such procedure exists.
NEW QUESTION # 52
......
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