Which two statements are true about the Oracle Cloud Infrastructure (OCI) Monitoring tools available for Base Database Service Virtual Machine DB Systems?
Oracle Cloud Agent Capabilities (C):
The Oracle Cloud Agent collects a wide range of metrics, including OS-level, VM, and database performance metrics. These metrics are integrated with the OCI Monitoring service, where users can view them in customizable charts and dashboards.
Alarms and Notifications (D):
The OCI Monitoring service enables users to set alarms that trigger when certain thresholds are exceeded. Notifications are sent via the OCI Notifications service, providing proactive monitoring and alerting.
Why the other options are incorrect:
A: Users can use custom metrics alongside Oracle Cloud Agent metrics.
B: Customers are allowed to install additional monitoring agents if needed.
E: Performance data can be integrated with OCI monitoring tools, not limited to Enterprise Manager.
Oracle Base Database Monitoring Documentation
When considering autoscaling for provisioned throughput in NoSQL Database Cloud Service, which metric is LEAST relevant for determining when to scale up the capacity units?
A . CPU utilization of the compute instances hosting the database:
Autoscaling in NoSQL Database Cloud Service primarily focuses on RCUs (Read Capacity Units) and WCUs (Write Capacity Units).
The objective is to dynamically adjust capacity based on query workload, not on CPU utilization.
Even if CPU usage is high, it might not necessarily indicate that the capacity units are inadequate.
Why the other options are more relevant:
B . Rejected read requests (RCUs): Direct indicator that read capacity is insufficient, requiring scaling.
C . Rejected write requests (WCUs): Indicates that the write throughput is inadequate, necessitating scaling.
D . Latency of read and write operations: Increased latency often points to under-provisioned throughput.
Oracle NoSQL Database Cloud Service Documentation: Autoscaling Throughput
Which statement accurately describes the patching process for Oracle Grid Infrastructure (GI) and ASM components on a BaseDB VM system when using user-managed patching?
B . Manual patching for GI and ASM:
In a user-managed environment, the DBA is responsible for downloading and applying patches for Grid Infrastructure (GI) and Automatic Storage Management (ASM).
These patches are distinct from database patches and need to be applied using tools like opatch or Oracle 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.
Oracle Database Patching Documentation: User-Managed Patching Guide
Which two actions can be performed using the Automatic Database Diagnostic Monitor (ADDM) within Database Management to diagnose cloud database performance?
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
Which of the following is the recommended approach for migrating a large, mission-critical database from an on-premises Exadata system to Exadata Database Service with minimal downtime?
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
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