PASS GUARANTEED PROFESSIONAL ORACLE - VALID 1Z0-1093-25 EXAM MATERIALS

Pass Guaranteed Professional Oracle - Valid 1z0-1093-25 Exam Materials

Pass Guaranteed Professional Oracle - Valid 1z0-1093-25 Exam Materials

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Oracle Cloud Database Services 2025 Professional Sample Questions (Q59-Q64):

NEW QUESTION # 59
In a key-value NoSQL database, what is the primary mechanism for accessing data?

  • A. Using a unique key to retrieve the associated value directly.
  • B. Traversing relationships between nodes to find related data.
  • C. Scanning all documents in the database to find matching data.
  • D. Using SQL queries to filter and retrieve data based on complex criteria.

Answer: A

Explanation:
Data Access in Key-Value Stores:
A key-value database works by storing data askey-value pairs. The primary access methodinvolves:
* Providing aunique keyto quickly retrieve the associated value.
* This model is highly efficient forsimple lookupsand data retrieval where thekey is known.
* Due to itssimplicity and speed, it is commonly used for caching and session management.
Why the other options are incorrect:
* A:SQL queries are used in relational databases, not key-value stores.
* C:Traversing nodes is typical ingraph databases.
* D:Scanning all documents is inefficient and not the primary method in key-value stores.


NEW QUESTION # 60
If the Database Management Service is failing to collect performance metrics from a cloud database, which is the LEAST likely cause?

  • A. The Database Management Service instance is located in a different region than the database.
  • B. The database user account used by the Management Agent has been locked.
  • C. Incorrect IAM policies preventing the service from accessing the database.
  • D. The database is temporarily offline.

Answer: A

Explanation:
Reasoning:
TheDatabase Management Servicecan collect performance metrics from databases across different regions within the same OCI tenancy. Therefore, the geographic location of the service relative to the database isnot a common issue.
More Likely Causes:
* A:IAM policies that do not grant sufficient permissions are a common issue.
* B:If the database is offline, no metrics can be collected.
* D:A locked database user account used by the Management Agent will prevent data collection.
Why C is incorrect:
The Database Management Service can be configured to collect metrics from databasesacross regions, as long as network access and permissions are properly configured.


NEW QUESTION # 61
Which statement BEST describes the primary architectural distinction between Exadata Database Service and a traditional Oracle Database deployed on virtual machines in the cloud?

  • A. Exadata Database Service exclusively supports Oracle RAC, while traditional cloud deployments can support both single-instance and RAC databases.
  • B. Exadata Database Service uses a completely different SQL parsing engine compared to a traditional Oracle Database.
  • C. Exadata Database Service integrates specialized, high-performance storage servers and a high- bandwidth, low-latency RDMA over Converged Ethernet (RoCE) network, optimized for database workloads, which are not present in typical cloud VM deployments.
  • D. Exadata Database Service utilizes only virtualized compute nodes, while traditional deployments use bare metal.

Answer: C

Explanation:
Exadata's Unique Architecture:
Exadata Database Service is engineered specifically for Oracle Database workloads. The architecture leverages specialized storage servers that performdata-intensive operations at the storage level(such as filtering and aggregation), reducing the amount of data sent to the compute nodes.
TheRoCE network(RDMA over Converged Ethernet) provides high-bandwidth, low-latency connectivity between compute and storage nodes, significantly enhancing I/O performance. This architecture is optimized for bothOLTP and OLAP workloads, making Exadata a superior choice for performance-critical applications.
Why the other options are incorrect:
* A:Exadata combines both virtualized and bare metal compute nodes.
* C:Both Exadata and traditional cloud deployments can support Oracle RAC, but Exadata is optimized for it.
* D:Exadata uses the same Oracle Database SQL parsing engine; the difference lies in the optimized hardware.


NEW QUESTION # 62
Which component aids in assessing the readiness of a MySQL instance for migration to MySQL HeatWave, specifically identifying potential compatibility issues?

  • A. Oracle SQL Developer
  • B. MySQL Workbench
  • C. MySQL Enterprise Monitor
  • D. Oracle Cloud Advisor
  • E. MySQL Shell Upgrade Checker Utility

Answer: E

Explanation:
C: MySQL Shell Upgrade Checker Utility:
* The utility analyzes MySQL instances for compatibility with newer versions, such as MySQL 8.0 used by HeatWave.
* It checks for:
* Syntax differences
* Data type mismatches
* Deprecated features
* The tool outputs a report highlighting issues that may impact migration to HeatWave.
Why the other options are incorrect:
* A. MySQL Enterprise Monitor:Focuses on monitoring performance, not compatibility.
* B. Oracle SQL Developer:Primarily used for database development, not upgrade checks.
* D. Oracle Cloud Advisor:Provides cloud optimization recommendations, not MySQL compatibility checks.
* E. MySQL Workbench:A visual tool for database design and administration, not specifically for upgrade assessment.


NEW QUESTION # 63
Which two functionalities are provided by the SQL Performance Analyzer (SPA) within Database Management, aiding in cloud database tuning?

  • A. Analyze the execution plan of a SQL statement and suggest alternative indexing strategies.
  • B. Generate a report highlighting the performance impact of a specific database change on a set of SQL statements.
  • C. Compare the performance of SQL statements before and after a database change (e.g., upgrade, parameter change).
  • D. Automatically rewrite SQL queries to improve their performance.

Answer: B,C

Explanation:
B: Compare SQL performance before and after changes:
* SPA evaluates the effect of configuration changes, upgrades, or patches on SQL performance.
* Provides insights into whether a change improves or degrades query performance.
C: Generate performance impact reports:
* SPA generates reports summarizing the effects of specific changes on SQL workload performance.
* Helps DBAs make informed decisions before implementing changes in production.
Why the other options are incorrect:
* A. Automatically rewriting SQL:SPA does not modify queries; it only analyzes and compares performance.
* D. Suggesting indexing strategies:SPA evaluates performance impacts, but indexing recommendations are made by the SQL Tuning Advisor.


NEW QUESTION # 64
......

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