Workload Migration

You are leading a multi-cloud migration project where 200 virtual machines from an on-premises data center are being assessed for migration to OCI. You have deployed the OCI Migration discovery agent, but some Linux VMs are failing inventory collection due to SSH authentication failures and lack of root privileges. How should you resolve this issue without compromising security?

Your organization is migrating a 3-tier web application running on VMware vSphere to OCI Compute. The application requires exact operating system configurations, strict security policies, and custom kernel modules. You want to automate the migration process while maintaining network consistency. Which migration approach is most suitable?

An architect is planning the migration of a large enterprise application repository stored in an on-premises NFS filer to OCI. The application requires POSIX-compliant shared file storage accessible by multiple compute instances simultaneously across different availability domains. Which OCI storage service should be deployed?

You are migrating a mission-critical multi-tier application from an on-premises data center to OCI. During the migration assessment phase, you identify that the application relies heavily on low-latency network communication (< 1ms round trip time) between the web tier and database tier. Which OCI architectural feature should you implement to satisfy this latency requirement?

Your company is executing a lift-and-shift migration of 50 physical servers running Red Hat Enterprise Linux (RHEL) to OCI. You want to ensure that the operating systems remain supported, patched, and entitled to Oracle Linux Premier Support without having to rebuild the servers. What conversion utility should you use?

An enterprise is planning to migrate a large on-premises Oracle Database of 15 TB to Oracle Cloud Infrastructure (OCI) Exadata Database Service. The maintenance window for the final cutover is extremely short (less than 2 hours). Which migration method should you recommend to minimize application downtime?

An administrator needs to transfer 80 TB of unstructured file backup data from an on-premises Network Attached Storage (NAS) device to OCI Object Storage. The available internet bandwidth is only 50 Mbps, which would take months to upload. Which OCI service should be utilized to complete this physical migration efficiently?

Your team is executing a cutover plan for migrating a production Microsoft SQL Server database from an on-premises environment to OCI Compute running Windows Server. To ensure data integrity, you decide to use Always On Availability Groups with the on-premises primary and the OCI replica. After completing the initial seed and syncing the databases, you perform the failover. However, application servers in OCI cannot connect to the new primary database. What is the most likely root cause?

You are migrating a custom web application from an on-premises Linux server to OCI Compute. The application is packaged as a standard Docker container. Your management wants to avoid managing underlying operating systems, kernel patching, and VM scaling. Which OCI service should you select for this containerized workload migration?

During a database migration assessment from an on-premises Oracle Database (version 11.2.0.4) to OCI Base Database Service running Oracle Database 19c, you discover that the legacy database uses deprecated initialization parameters and character sets that are incompatible with 19c. How should you address this migration blocker?

Your organization is designing a disaster recovery strategy as part of a workload migration project to OCI. The business requirement states that in the event of a regional outage in OCI region A, workloads must fail over to OCI region B with a Recovery Point Objective (RPO) of zero and a Recovery Time Objective (RTO) of less than 15 minutes. Which OCI networking feature should you deploy to interconnect the two regions for database replication?

Your company is migrating a large PostgreSQL database from AWS RDS to OCI Database with PostgreSQL. The database is 4 TB in size, and write operations continue 24/7. To ensure zero data loss and minimal downtime during cutover, which migration strategy should you employ?

You are migrating an enterprise application that requires strict compliance and regulatory isolation. The application must run on dedicated physical hardware where no other customer's virtual instances can reside. Which OCI compute provisioning model should you choose?

Your engineering team is troubleshooting an issue where migrated Linux virtual machines in OCI are experiencing severe disk I/O performance bottlenecks. The instances were migrated using raw block-level cloning from on-premises SAN storage. The volumes in OCI are provisioned as Lower Cost (Balanced) block volumes. What action should you take to resolve the performance bottleneck while maintaining data integrity?

During a lift-and-shift migration planning phase, your team needs to estimate the monthly running costs of various OCI Compute shapes, block storage volumes, and egress data transfer fees before provisioning resources. Which OCI tool should you use to generate this detailed cost breakdown?

An organization is preparing to migrate 500 virtual machines to OCI. To govern resource creation, budget allocation, and access control effectively, how should the OCI tenancy be structured prior to starting resource migrations?

Your organization has completed migrating a database to OCI Base Database Service. To ensure compliance with corporate data protection policies, you must verify that all database backups stored in OCI Object Storage are automatically encrypted using customer-managed encryption keys. Where should you configure this key management integration?

An enterprise is migrating a legacy Java application that requires sticky sessions and complex path-based routing rules to OCI. The migration plan requires zero dropped connections during backend server updates. Which OCI Load Balancer configuration feature should you implement?

You are migrating a multi-tier web application to OCI. The web tier consists of Apache HTTP servers that need to be auto-scaled based on CPU utilization. Which combination of OCI services should you configure to achieve automated horizontal scaling?

You are planning the network cutover for a large-scale migration to OCI. The on-premises data center is connected to OCI via an OCI FastConnect circuit configured with private virtual circuits. During cutover, DNS records must be updated so that client traffic resolves to OCI load balancers. Which OCI service should you use to manage internal and external DNS authoritative resolution smoothly?

Your team is planning to migrate virtual machines from an on-premises hypervisor to OCI Compute. You want to generate an automated report detailing resource utilization (CPU, memory, storage IOPS) over the past 30 days to right-size the target OCI instance shapes. Which OCI tool supports this discovery phase?

You are executing a lift-and-shift migration of a multi-tier application where subnet IP addressing must remain identical to the on-premises environment due to hardcoded IP configurations in legacy software. How should you configure the OCI Virtual Cloud Network (VCN) to accommodate this requirement?

During a database migration project using Oracle Zero Downtime Migration (ZDM), the pre-migration validation phase fails with an error indicating that the source database's time zone file version does not match the target OCI Database service time zone file version. How should you resolve this issue?

You are migrating a 50 TB Oracle Database from an on-premises Sun Solaris SPARC server to OCI Exadata Database Service on X9M hardware (Linux x86-64 architecture). Because the source and target platforms have different endianness and operating system architectures, standard RMAN backup restoration is not possible. Which migration strategy should you implement?

You are designing a hybrid cloud architecture during a phased workload migration to OCI. On-premises applications must securely communicate with migrated OCI workloads over a private, dedicated connection with high throughput and encryption. Which OCI networking service combination provides this capability?

Your organization is migrating a high-throughput transactional database to OCI. During peak business hours, the database experiences massive I/O bursts. You want to ensure the underlying storage configuration can scale its IOPS independently of storage capacity. Which OCI block volume feature should you enable?

Your company is migrating static web assets and user-uploaded media files from an on-premises web server to OCI. The web application requires high durability, low latency, and global content delivery. Which OCI service should you use to store and serve these assets?

Your organization is performing a zero-downtime database migration from an Oracle Database on-premises to OCI Exadata Database Service using Oracle Zero Downtime Migration (ZDM). During the migration job execution, the workflow pauses during the dataguard broker configuration step. Reviewing the ZDM logs, you find a network timeout error communicating between the ZDM service host and the OCI database listener. What is the most likely cause?

An enterprise is migrating a cluster of microservices running on Kubernetes from an on-premises data center to OCI Container Engine for Kubernetes (OKE). The cluster uses custom CNI (Container Network Interface) plugins and persistent storage backed by an on-premises Ceph cluster. During migration planning, how should you architect the persistent storage layer in OCI to support OKE stateful workloads?

You are migrating a legacy application that relies on hardcoded IP addresses for inter-service communication. During the migration to OCI VCNs, you need to ensure that virtual machines can resolve each other's hostnames dynamically without maintaining manual /etc/hosts files. What OCI networking feature should you configure?

An architect is designing a lift-and-shift migration strategy for an enterprise running diverse workloads on-premises. Which TWO of the following factors should be evaluated when deciding whether to choose a lift-and-shift (rehost) approach versus a re-architect approach? (Choose two.)

Your organization is preparing to migrate several large Oracle databases to OCI using Oracle Data Pump. Which THREE best practices should you follow to optimize the export and import performance over network connections? (Choose three.)

When planning a workload migration to OCI, what are TWO primary benefits of conducting a comprehensive discovery and assessment phase using tools like OCI Migration? (Choose two.)

Your enterprise is migrating several mission-critical applications to OCI and requires high availability and disaster recovery across multiple regions. Which THREE OCI architectural components should you configure to meet these requirements? (Choose three.)

You are designing a secure network architecture for migrating production workloads into an OCI Virtual Cloud Network (VCN). Compliance standards require strict traffic inspection, isolation, and secure administrative access. Which THREE OCI networking and security features should you incorporate into your design? (Choose three.)

You are tasked with migrating a large enterprise database to OCI Exadata Database Service. To ensure minimal downtime and high reliability during cutover, which TWO Oracle migration tools or features are specifically designed for this purpose? (Choose two.)

During a migration cutover weekend, your team encounters unexpected DNS resolution failures preventing users from reaching the newly migrated OCI application endpoints. Which TWO immediate troubleshooting steps should you perform? (Choose two.)

Your organization is planning to migrate file shares from an on-premises Windows environment (SMB protocol) to OCI. Which THREE factors or options should you consider when selecting the appropriate OCI storage architecture for Windows file shares? (Choose three.)

You are migrating a tiered enterprise application suite to OCI. Certain legacy components require specific static MAC addresses and direct layer 2 broadcast communication, which standard OCI virtual cloud networks (VCNs) do not support by default. Which THREE OCI architectural approaches or features can you utilize to solve this requirement? (Choose three.)

During the post-migration validation phase of an application migration to OCI, your team needs to verify security compliance and resource configuration posture. Which TWO OCI services should you use to assess security posture and detect misconfigurations? (Choose two.)

An enterprise is planning to migrate a large monolithic .NET application from on-premises VMware to Oracle Cloud Infrastructure (OCI). The database is Microsoft SQL Server Enterprise Edition, and the virtual machines require persistent shared block storage using NFS. Which combination of OCI services provides the most native and seamless lift-and-shift architecture?

Your organization is planning a phased workload migration to OCI. To minimize risk, you decide to use a canary deployment and traffic splitting strategy for web applications. Which TWO OCI services or features can assist in routing fractional traffic percentages between on-premises and OCI environments during migration? (Choose two.)

An architect is migrating a multi-tier enterprise web application from an on-premises data center to OCI using the Lift and Shift Migration tool. During the migration assessment phase, the migration agent reports that several source VMs have unsupported guest operating system kernels and specific block device partitioning that cannot be directly converted by the OCI Image Builder. What is the recommended remediation strategy before initiating the bulk instance migration?

You are migrating an Oracle Database 19c on-premises to OCI Exadata Database Service on Dedicated Infrastructure using Oracle Zero Downtime Migration (ZDM) in offline mode. The target database is already provisioned. Which ZDM migration phase configures the target database and initiates the data transfer via Oracle Data Pump?

Your company is planning to migrate 50 TB of unstructured file data from an on-premises Network Attached Storage (NAS) appliance to OCI File Storage Service (FSS). The target RTO/RPO allows for a phased baseline copy followed by incremental syncs. Which tool should you use to transfer the data efficiently over your dedicated OCI FastConnect link?

You are planning the final cutover for a critical production database migrating from an on-premises Oracle Real Application Clusters (RAC) database to OCI Base Database Service using Oracle Data Guard for replication. To minimize application downtime during the cutover window, which sequence of steps must be executed?

You are designing a high-performance computing (HPC) workload migration to OCI. The application consists of tightly coupled MPI (Message Passing Interface) jobs that require extreme low latency and high throughput. Which THREE OCI architecture components must you deploy to satisfy these HPC requirements? (Choose three.)

An architect is designing a database migration from an on-premises Oracle Database (Non-CDB structure) to an OCI Autonomous Database (Serverless). Which migration method is mandatory because of the architectural constraints of Autonomous Database?

Your organization requires the migration of 300 TB of backup archives from an on-premises data center to OCI Object Storage. The local internet connection is limited to 100 Mbps, and corporate compliance mandates that data cannot traverse the public internet unencrypted. Which solution should you select to meet these constraints?

An enterprise is executing a large-scale database migration to OCI using Oracle Data Pump. To ensure optimal performance and minimize the duration of the data load phase, which THREE best practices should the database administrator implement? (Choose three.)

You are tasked with migrating a mission-critical three-tier enterprise application from an on-premises environment to OCI. The database tier uses Oracle RAC, and the application tier consists of stateless Java applications running on JBoss. Which TWO strategies or tools should be incorporated into the migration plan to ensure high availability and minimal downtime during cutover? (Choose two.)