Oracle Cloud DBCS interview Questions for beginners - Part 2

 

11. What is Oracle Cloud Autonomous Transaction Processing (ATP)?

• Answer: Oracle Autonomous Transaction Processing (ATP) is an Oracle Autonomous Database optimized for transaction-based workloads. It supports SQL and PL/SQL applications, and it automates tasks such as scaling, patching, and backup. ATP is ideal for OLTP (Online Transaction Processing) applications.

12. How do you monitor a database in Oracle DBCS?

• Answer:
  • Use Oracle Cloud Console to monitor the health, performance, and resource utilization of the database.
  • Oracle Enterprise Manager (OEM): A web-based tool to monitor and manage Oracle databases.
  • Cloud Monitoring Services: Provides real-time metrics such as CPU usage, memory, storage, and disk I/O for Oracle DBCS instances.

13. What is the role of Oracle Cloud Storage in DBCS?

• Answer: Oracle Cloud Storage is used to store database backups, data files, and logs for Oracle DBCS instances. It is highly secure and scalable, allowing you to store and manage large amounts of data with redundancy and disaster recovery options.

14. What is the difference between a Virtual Machine and a Bare Metal instance in Oracle Cloud?

• Answer:
  • Virtual Machine (VM): A virtualized computing environment that shares physical resources with other VMs. VMs are more flexible and easier to scale.
  • Bare Metal Instance: A physical server dedicated to a single tenant, providing complete control over the hardware and resources. It offers better performance but lacks some of the flexibility of virtual machines.

15. What are some common use cases for Oracle DBCS?

• Answer: Common use cases include:
  • OLTP (Online Transaction Processing): For applications requiring fast transactional processing.
  • Data Warehousing: Running large-scale data analysis and reporting workloads.
  • Disaster Recovery: Using Oracle DBCS with features like Data Guard for business continuity.
  • Development and Testing: Providing isolated database environments for development teams.

16. What is a Cloud Firewall in Oracle Cloud?

• Answer: Oracle Cloud Firewall provides security by controlling inbound and outbound traffic to your Oracle Cloud resources (like DBCS instances). It allows administrators to set up rules based on IP addresses, ports, and protocols to control access to cloud resources.

17. Explain the concept of "Scaling" in Oracle Cloud DBCS.

• Answer: Scaling in Oracle Cloud DBCS refers to adjusting the resources allocated to a database instance, such as CPU, memory, and storage. You can scale up (add more resources) or scale down (reduce resources) to meet changing performance or capacity requirements. Oracle provides both vertical scaling (scaling resources within the same instance) and horizontal scaling (adding more instances for workload distribution).

18. What are the key components of Oracle Cloud Infrastructure (OCI) used in DBCS?

• Answer: Key components include:
  • Compute (VM or Bare Metal Instances): Provides the underlying compute resources for running the database.
  • Storage: High-performance block storage and object storage to store data and backups.
  • Networking: Virtual Cloud Network (VCN), subnets, and load balancers for connecting resources.
  • Identity and Access Management (IAM): Controls user access to Oracle Cloud resources.