Most Recent Oracle 1Z0-931-25 Exam Dumps

Full Detailed In-Depth Explanation:

A: True. Data Insights works with tables and business models in ADW.

B: False. Exclusive to Autonomous Database, not on-premises.

C: True. Search history is retrievable.

D: False. Included in ADW, not separately priced.

Network Security Groups (NSGs) in OCI control network traffic to Autonomous Database instances:

Correct Answer (D): You can configure up to 5 NSGs for an Autonomous Database. This limit allows sufficient flexibility to define multiple security rules while maintaining manageability. NSGs can be assigned during provisioning or updated later via the OCI Console or API, restricting access to specific IP ranges or VCNs.

Incorrect Options:

A, B, C: The values 3, 9, and 7 are not documented limits for NSGs in Autonomous Database; the official limit is 5.

This capability supports secure network configurations tailored to organizational needs.

Data Pump is a standard tool for migrating databases, including to Autonomous Database:

Correct Answer (A): Data is imported, encompassing table contents and other data objects, ensuring all records are transferred to the target Autonomous Database.

Correct Answer (B): Schemas are imported, including schema definitions (tables, views, indexes, etc.) and their metadata, preserving the database structure.

Incorrect Options:

C: Tablespaces are not imported directly. Autonomous Database manages its own storage internally, automatically mapping imported data to its storage architecture without requiring tablespace definitions from the source.

D: Reports are not database objects and are not part of the Data Pump migration process; they are typically generated separately post-migration.

This ensures a complete and functional migration of data and structure.

Full Detailed In-Depth Explanation:

In Autonomous Database on Shared Infrastructure, tablespace quotas are managed using standard SQL commands, as administrative packages like DBMS_CLOUD_ADMIN are restricted in this environment. The correct method is:

ALTER USER MTHEO QUOTA UNLIMITED ON TABLESPACE DATA: This command directly modifies the user's quota on the DATA tablespace, which is the default tablespace in Autonomous Database. ''UNLIMITED'' removes any storage restrictions.

Analysis of options:

A: Incorrect. DBMS_CLOUD_ADMIN is used in dedicated infrastructure for advanced administrative tasks, not shared infrastructure for quota changes.

B: Correct. This is the standard SQL syntax supported in shared infrastructure.

C: Incorrect. ALTER TABLESPACE modifies tablespace properties, not user quotas, and isn't applicable here.

D: Incorrect. ALTER DATABASE syntax is invalid for user quotas; it's for database-wide settings.

Oracle's automatic indexing feature, available in Autonomous Database, optimizes query performance by creating and managing indexes. The requirement here is to enable it but ensure new indexes are invisible (not used by the optimizer unless explicitly made visible). The correct command is:

EXEC DBMS_AUTO_INDEX.CONFIGURE('AUTO_INDEX_MODE','REPORT ONLY') (C): The REPORT ONLY mode enables automatic indexing, where the database identifies and creates candidate indexes based on workload analysis. However, these indexes are created as invisible by default, meaning the optimizer does not use them in SQL execution plans unless a DBA manually makes them visible (e.g., via ALTER INDEX ... VISIBLE). This mode is ideal for testing or validation without impacting production queries. For example, if a query frequently filters on a column, an invisible index might be created, but it won't affect performance until explicitly activated.

The incorrect options are:

EXEC DBMS_AUTO_INDEX.CONFIGURE('AUTO_INDEX_MODE','IMPLEMENT') (A): The IMPLEMENT mode fully enables automatic indexing, creating and maintaining visible indexes that the optimizer uses immediately. This contradicts the requirement for invisible indexes.

EXEC DBMS_AUTO_INDEX.CONFIGURE('AUTO_INDEX_MODE','OFF') (B): The OFF mode disables automatic indexing entirely, so no indexes (visible or invisible) are created, failing the requirement to enable it.

EXEC DBMS_AUTO_INDEX.CONFIGURE('AUTO_INDEX_MODE','INVISIBLE') (D): There is no INVISIBLE mode in DBMS_AUTO_INDEX.CONFIGURE. While indexes can be set as invisible individually, this is not a valid configuration option for the auto-indexing feature.

The REPORT ONLY mode provides a controlled approach, allowing index creation for analysis without immediate deployment. This is particularly useful in Autonomous Database, where automation is balanced with DBA oversight.