Oracle 1Z0-1093-25 Exam Dumps

A . cellcli alter iormplan database dbname shares=value

CellCLI Utility:

cellcli is a command-line interface used to manage Exadata storage cells.

The alter command is used to modify existing configurations, including IORM plans.

IORM (I/O Resource Management):

Helps control how I/O resources are allocated among databases.

The shares parameter adjusts the relative priority of I/O requests.

Correct syntax for adjusting IORM:

bash

CopyEdit

cellcli -e 'alter iormplan database dbname shares=value'

Why the other options are incorrect:

B . configure iormplan: Used for creating or setting up new IORM plans, not for modification.

C . modify iormplan: modify is not a valid command in CellCLI for IORM.

D . change iormplan: No such command exists in CellCLI.

Oracle Exadata Documentation: IORM Configuration

Block Change Tracking (BCT):

Enabling BCT with RMAN significantly speeds up incremental backups by recording changes made to data blocks since the last backup. Instead of scanning the entire database to detect changes, RMAN consults the block change tracking file to identify modified blocks, reducing backup time and I/O.

BCT is especially beneficial in large databases where full backups would be time-consuming and resource-intensive. Incremental backups become more efficient, making daily or more frequent backups feasible.

Why the other options are incorrect:

A: Full backups are still required periodically.

C: Encryption is separate from BCT functionality.

D: Point-in-time recovery is facilitated by backup logs, not BCT directly.

E: Integrity checks are performed during validation, not as part of BCT.

Oracle RMAN Backup Documentation

B . Masking or anonymizing sensitive data:

Data privacy regulations (like GDPR, HIPAA) mandate that personally identifiable information (PII) is protected, even in non-production environments.

Cloning a database without masking sensitive data could expose confidential information to unauthorized users.

Techniques include:

Data masking: Replacing real data with realistic, but non-sensitive values.

Data anonymization: Irreversibly removing personally identifiable information.

Why the other options are incorrect:

A . Matching compute shape: Relevant to performance, not privacy.

C . Using the same database version: Important for compatibility, but not related to data privacy.

D . Same NSG rules: Important for network security, but does not directly address data exposure.

E . Off-peak scheduling: Minimizes disruption but does not address data protection.

Oracle Database Security Documentation: Data Masking Techniques

SDK Function:

An SDK simplifies database interaction by providing libraries and tools that abstract away the complexities of the underlying API. This allows developers to use familiar programming languages and constructs to interact with the database.

Why the other options are incorrect:

A: Physical storage layout is managed by the database service, not the SDK.

C: Infrastructure management is handled by cloud providers, not the SDK.

D: Network security policies are managed via OCI console or infrastructure tools, not the SDK.

Oracle NoSQL Database Service Documentation

A . Generate recommendations for SQL plan baselines:

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

Recommendations may include using an existing baseline or 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.

Oracle Database Management Documentation: ADDM Features