Most Recent Oracle 1Z0-1093-25 Exam Dumps

B . Using Data Guard for physical standby and switchover:

This method enables minimal downtime migration.

Steps:

Configure Data Guard to synchronize the standby database with the primary on-premises database.

Once synchronized, perform a switchover to make the standby the new primary.

Downtime is limited to the switchover duration.

This approach leverages real-time replication to minimize disruption.

Why the other options are incorrect:

A . Export/Import with Data Pump: Too time-consuming for large databases.

C . Full backup and restore: High downtime due to the time required for data transfer and restoration.

D . Copying via SQL Developer: Not feasible for mission-critical and large databases due to slow transfer speeds.

Oracle Data Guard Documentation: Minimal Downtime Migration

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.

Oracle Database Performance Tuning Guide: SQL Performance Analyzer

C . Each data item is uniquely identified by a key, and the associated value can be any data type or structure.

Key-Value Data Model:

The key-value model is fundamentally based on a simple association between a unique key and its corresponding value.

The value can be a simple data type (string, number) or a complex structure (like JSON).

Oracle NoSQL Database Cloud Service uses this model to ensure efficient, scalable data access.

Why the other options are incorrect:

A . Organized into tables with schemas: This represents a relational database model.

B . Stored as JSON documents: Although NoSQL can store JSON, the fundamental model is still key-value.

D . Relationships defined through foreign keys and joins: This is typical of relational databases.

E . Graph format with nodes and edges: Represents a graph database model, not key-value.

Oracle NoSQL Database Documentation: Data Models

C . Defines CPU, memory, and network bandwidth:

The Compute Shape specifies the resources allocated to the VM.

Shapes vary in the number of OCPUs, amount of RAM, and network performance.

Selecting an appropriate shape ensures the database has enough computational power and memory to meet workload demands.

Why the other options are incorrect:

A . Number of databases: Limited by storage and resource capacity, not the shape itself.

B . Availability domain: Chosen separately during provisioning.

D . Pre-installed software version: The shape does not determine the database version.

Oracle Cloud Infrastructure Documentation: Compute Shapes

MySQL Slow Query Log:

The MySQL Slow Query Log records queries that exceed a specified execution time threshold. It is essential for identifying long-running queries that may be causing performance bottlenecks.

OCI Logging Analytics:

By integrating the slow query log with OCI Logging Analytics, users can visualize query performance patterns, generate alerts, and identify the root cause of slow performance. This combination is powerful for detecting and addressing query-specific issues.

Why the other options are incorrect:

A: OCI Vault is used for managing encryption keys, not query performance.

B: OCI Events track general occurrences, not detailed query performance.

D: Network latency analysis is useful but not directly related to query analysis.

E: OCI Bastion provides secure access, not performance analytics.

Oracle HeatWave Monitoring Documentation