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Oracle Autonomous Database Cloud 2025 Professional Sample Questions (Q66-Q71):

NEW QUESTION # 66
A new Python developer has joined your team and needs to access the Autonomous Database dat a. How does the developer connect to and interact with the Autonomous Database from Python?

  • A. By using Oracle Client and the cx_Oracle interface
  • B. By using Oracle Client and the DBD-oracle interface
  • C. By using JDBC Driver
  • D. By using SQL Developer

Answer: A

Explanation:
Python developers connect to Autonomous Database using a dedicated library:
Correct Answer (D): "By using Oracle Client and the cx_Oracle interface" (now renamed oracledb) is the recommended method. The Oracle Client provides the underlying connectivity, and cx_Oracle (or oracledb) is a Python module for database access, supporting wallet-based authentication to Autonomous Database.
Incorrect Options:
A: SQL Developer is a GUI tool, not a Python interface.
B: DBD-oracle is not a standard Python library for Oracle; it's likely a typo or confusion with Perl's DBI.
C: JDBC is for Java, not Python; it's incompatible without a bridge like JPype.
This method ensures efficient, secure Python integration.


NEW QUESTION # 67
Which terminology is used to refer to a communication channel for sending messages to a subscription, such as email or SMS, in Oracle Cloud Infrastructure?

  • A. Topic
  • B. Subject
  • C. Event
  • D. Notification

Answer: A

Explanation:
In Oracle Cloud Infrastructure (OCI), the Notifications service is used to send messages (e.g., via email, SMS, or HTTP endpoints) to subscribers. The correct terminology for the communication channel is:
Topic (C): A "topic" in OCI Notifications is the named entity that acts as a communication channel. Publishers send messages to a topic, and subscribers (e.g., email addresses, SMS numbers, or custom endpoints) receive those messages based on their subscription to that topic. For example, you might create a topic called "DatabaseAlerts" to send notifications about database events. When a message is published to this topic, all subscribed endpoints (e.g., an email like [email protected]) receive it. This design follows a publish-subscribe (pub/sub) model, making "topic" the central concept for message distribution.
The incorrect options are:
Subject (A): The "subject" is a field within a message (e.g., the subject line of an email), not the channel itself. It describes the content of an individual notification but doesn't define the mechanism for sending it. For instance, an email notification might have a subject like "Database Maintenance Scheduled," but the topic is the channel delivering it.
Notification (B): A "notification" refers to the actual message being sent (the payload), not the channel through which it travels. It's the output of the process, not the infrastructure enabling it. For example, a notification might be "Database is down," but it's sent via a topic.
Event (D): An "event" is an occurrence or trigger (e.g., a database failover) that might generate a notification, but it's not the channel. Events are inputs that can be monitored by services like OCI Events, which then publish to a topic in Notifications.
The use of "topic" aligns with OCI's architecture for scalable, decoupled messaging. To illustrate, you'd create a topic in the OCI console under "Notifications," configure subscriptions (e.g., email or SMS), and then use APIs or triggers to publish messages to it. This abstraction ensures flexibility and reliability in message delivery across various protocols.


NEW QUESTION # 68
Which two objects are imported when using Data Pump to migrate your Oracle database to Autonomous Database? (Choose two.)

  • A. Report
  • B. Data
  • C. Schemas
  • D. Tablespaces

Answer: B,C

Explanation:
Oracle Data Pump is a key tool for migrating databases to Autonomous Database. The two objects imported are:
Data (B): Data Pump imports the actual data from the source database into the target Autonomous Database. This includes rows from tables, LOBs, and other data types stored in the dump file (e.g., .dmp). For example, if you export a table CUSTOMERS with 1 million rows, Data Pump imports all that data into ADB using DBMS_CLOUD.COPY_DATA after uploading the dump to OCI Object Storage. This ensures the content of your database is transferred intact.
Schemas (C): Data Pump imports schema definitions, including tables, views, indexes, triggers, and other objects owned by the schema. For instance, exporting a schema HR with tables like EMPLOYEES and DEPARTMENTS will recreate those objects in ADB, preserving their structure. The impdp utility or DBMS_CLOUD handles schema metadata, though some objects (e.g., indexes) may be recreated automatically by ADB's optimization.
The incorrect options are:
Tablespaces (A): Tablespaces are not imported directly. In Autonomous Database, storage is fully managed, and tablespaces are abstracted away. Data Pump imports data and schemas into ADB's managed tablespaces (e.g., DATA), not user-defined ones from the source. For example, a source tablespace USERS isn't replicated; its data is mapped to ADB's default storage.
Report (D): "Report" is not a database object; it might refer to query outputs or logs, but Data Pump doesn't import such entities. It focuses on database content, not external artifacts.
This process ensures a smooth migration of data and structure to ADB's managed environment.


NEW QUESTION # 69
When integrating object storage with Autonomous Database, how effectively does Oracle use the files in the object storage?

  • A. Scan partition tables
  • B. Prune columns in parquet files
  • C. Scan hybrid partition tables
  • D. Prune columns in CSV files

Answer: A

Explanation:
When Autonomous Database integrates with object storage (e.g., Oracle Cloud Infrastructure Object Storage), it optimizes data access. The correct answer is:
Scan partition tables (B): Oracle leverages partition pruning when scanning tables stored in object storage. This means it only scans the relevant partitions based on query predicates, significantly reducing I/O and improving performance. This is particularly effective for partitioned tables stored in formats like Parquet or ORC, which support partitioning.
The incorrect options are:
Prune columns in parquet files (A): While column pruning is possible with columnar formats like Parquet, the primary optimization highlighted in Oracle's documentation for object storage integration is partition pruning, not column pruning alone.
Scan hybrid partition tables (C): "Hybrid partition tables" is not a standard term in this context. Oracle supports external partitioned tables, but the focus is on scanning partitioned tables, not a hybrid-specific optimization.
Prune columns in CSV files (D): CSV files are row-based and do not natively support column pruning, making this less effective compared to partition scanning.
Partition pruning is a key optimization for external tables in object storage, enhancing query efficiency.


NEW QUESTION # 70
DBSRV1 is an Autonomous Database with the display name PRODDB. You plan to take manual backups of this database periodically. What must be the name of the bucket that will be used to store manual backups?

  • A. backup_dbsrv1
  • B. BACKUP_DBSRV1
  • C. BACKUP_PRODDB
  • D. backup_proddb

Answer: B

Explanation:
Manual backups in Autonomous Database are stored in OCI Object Storage, and the bucket name follows a strict convention. The correct name is:
BACKUP_DBSRV1 (D): For manual backups, ADB uses a bucket named BACKUP_<DB_UNIQUE_NAME> (all uppercase). Here, DBSRV1 is the database's unique name (not the display name PRODDB), so the bucket must be BACKUP_DBSRV1. This bucket is automatically created by Oracle when you initiate a manual backup via the OCI console (e.g., "Create Manual Backup" button) or API (e.g., oci db autonomous-database backup create). For example, backing up DBSRV1 on March 18, 2025, stores files like backup_DBSRV1_20250318.dmp in this bucket. The unique name ensures uniqueness across the tenancy, as display names (e.g., PRODDB) might not be unique but the DB_UNIQUE_NAME is system-assigned and distinct.
The incorrect options are:
backup_proddb (A): This uses the display name proddb and lowercase, violating the BACKUP_<UNIQUE_NAME> uppercase convention.
BACKUP_PRODDB (B): While uppercase, it uses the display name PRODDB, not the unique name DBSRV1, so it's incorrect. Display names are for human readability, not system identification.
backup_dbsrv1 (C): This uses lowercase and lacks the exact BACKUP_ prefix format, failing Oracle's naming rule.
The rigid naming ensures consistency and automation in ADB's backup system.


NEW QUESTION # 71
......

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