1z0-1093-25 Exam Dumps - Oracle Cloud Database Services 2025 Professional

Detailed Flash Cache Monitoring:

The commandexadcli list metricdetail -cell -metricname "flashcache.*"provides acomprehensive overviewof all metrics related toSmart Flash Cache. This includes bothread and write operations, hit ratios, and IOPS statistics.

Themetricdetailoption retrieves in-depth data, crucial for performance troubleshooting.

Theflashcache.*wildcard captures all relevant metrics associated with the Flash Cache subsystem.

Why the other options are incorrect:

A:Limited to current IOPS and throughput, not specifically flash cache.

C:Too broad, as it includes general cell metrics.

D:Focuses only on historical read/write IOPS, not comprehensive.

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.

B. Relational vs. NoSQL data relationships:

Relational Databases:Useforeign keysto establish relationships between tables, maintainingreferential integrity.

NoSQL Databases:Typically do not enforce relationships through foreign keys. Instead, they:

Embed related datawithin a single document (common in document stores like MongoDB).

Useapplication-level joinsto link related data (common in key-value or column-family stores).

Graph databases (a type of NoSQL) useedgesto explicitly represent relationships between nodes.

This difference highlights theflexibility vs. consistencytrade-off between NoSQL and relational databases.

Why the other options are incorrect:

A. NoSQL databases lack relationships:Incorrect; they handle relationships differently.

C. NoSQL using foreign keys exclusively:NoSQL databases generally do not enforce such relationships.

D. Relational databases lack relationship mechanisms:Incorrect as relational databases are designed around relationships.

B. Optimizing schema and indexes:

Efficient schema design reduces the number of read/write operations.

Proper indexing reduces the need to scan large data volumes, minimizing the number of read capacity units (RCUs) consumed.

This proactive approach helps stay within the provisioned rate limits, avoiding throttling.

Why the other options are incorrect:

A. Increasing storage capacity:Does not address the rate of operations, only storage volume.

C. Disabling encryption:Unwise due to security risks and does not significantly impact rate limits.

D. Consolidating data into one table:Likely increases the rate of operations, worsening the problem.

B. VCN and Subnets:Exadata Database Service VM Clusters require a VCN to provide network connectivity for database instances, client access, and backups. Proper subnets are essential for this network setup.

E. Exadata Infrastructure Resource:Before creating a VM Cluster, an Exadata Infrastructure resource must be provisioned. The VM Cluster resides within this infrastructure.

Why the other options are incorrect:

A:OCI Vault and Key are used for encryption but not mandatory for VM Cluster creation.

C:A valid SI is needed for support but not a technical requirement for VM cluster creation.

D:Exadata Cloud@Customer is a separate service from Exadata Database Service.