1z0-1093-25 Oracle Cloud Database Services 2025 Professional Free Practice Exam Questions (2025 Updated)

B. Manual patching for GI and ASM:

In auser-managed environment, the DBA is responsible for downloading and applying patches forGrid Infrastructure (GI)andAutomatic Storage Management (ASM).

These patches are distinct fromdatabase patchesand need to be applied using tools likeopatchorOracle Universal Installer (OUI).

The process involves:

Downloading the patch from Oracle Support.

Staging the patch on the server.

Applying the patch using the appropriate commands.

Why the other options are incorrect:

A. Fully automated by OCI:OCI does not automatically patch GI and ASM in user-managed environments.

C. Integrated with database patching:GI and ASM patching is handled separately.

D. Required only during OS upgrade:Incorrect, as patching is required independently for security and stability.

B. Recommendations for parameter tuning:

Database Management analyzes historical performance data and provides tuning recommendations.

These recommendations align with Oracle best practices to optimize database performance.

C. Comparison of parameter settings:

The service allows users to compare parameter configurations between different databases or across time points for a single database.

This is useful for identifying changes or discrepancies that could impact performance.

Why the other options are incorrect:

A. Automatic correction of parameters:Database Management does not automatically correct parameters; changes require manual intervention.

D. Lack of parameter management:Incorrect statement, as the service does offer parameter management features.

Rate Limiting in NoSQL:

In Oracle NoSQL Database Cloud Service, rate limiting primarily controlsread and write throughput. This means defining themaximum number of read and write operations per secondthat a table can handle.

The goal is toprevent a single table from consuming excessive resources, ensuringfair allocationand system stability.

Why the other options are incorrect:

A:Storage capacity is managed via quotas, not rate limits.

C:CPU and memory are related to system resources, not table operations.

D:Indexing and query complexity are managed differently, often via query optimization.

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.

OCI Patching Process:

The Oracle Cloud Infrastructure console simplifies the patching process by integrating bothdatabase software and OS patching. Therolling update strategyensures that one node at a time is patched, reducing the downtime associated with updating the entire cluster. The storage nodes are updated in a separate process to ensure data integrity and availability.

Why the other options are incorrect:

A:The OCI console updates both the OS and database software.

B:Updates are performed in a rolling fashion, not concurrently.

D:The OCI console handles OS patching for both compute and storage nodes.

A. Generate recommendations for SQL plan baselines:

ADDM analyzes historical data andSQL execution plans, suggesting baseline adjustments to optimize performance.

Recommendations may includeusing an existing baselineor creating a new one.

C. Identify performance bottlenecks:

ADDM pinpoints issues related to:

I/O contention

CPU utilization

Memory bottlenecks

Locking issues

Helps DBAs understand which database components are causing slowdowns.

Why the other options are incorrect:

B. Automatically applying recommendations:ADDM only suggests actions; DBAs must manually review and implement them.

D. Creating indexes:ADDM does not create indexes automatically; it may suggest them, but implementation requires DBA action.

MySQL Slow Query Log:

TheMySQL Slow Query Logrecords queries that exceed a specified execution time threshold. It is essential for identifyinglong-running queriesthat may be causing performance bottlenecks.

OCI Logging Analytics:

By integrating the slow query log withOCI 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 addressingquery-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.

Principle of Least Privilege:

The principle of least privilege states that users should only be granted the minimum permissions necessary to perform their tasks. This reduces the risk of accidental or malicious actions that could compromise data integrity or security.

In the context ofOracle NoSQL Database Cloud Service, implementing this principle involves configuringIdentity and Access Management (IAM) policiesto precisely define which users or groups can perform specific actions (such as read, write, delete) on particular tables. By limiting access, the system minimizes potential attack vectors and the impact of compromised accounts.

Why the other options are incorrect:

A:Granting full administrative access violates the least privilege principle and increases security risks.

C:Encryption is important, but it addresses data confidentiality, not access control.

D:Backing up data is good practice, but storing backups in a publicly accessible location is insecure.