1z0-1123-25
Oracle Cloud Infrastructure 2026 Migration Architect Professional
1Z0-1123-25 Exam Guide: OCI Migration Architect Professional
The 1Z0-1123-25 exam validates skills associated with planning and executing workload migrations to Oracle Cloud Infrastructure, including migration scenarios involving on-premises environments, AWS, databases, containers, VMware, and OCI regions. Oracle identifies it as the exam for the OCI 2025 Migration Architect credential and describes the audience as cloud architects, IT professionals, and others involved in OCI migrations. This guide helps you decide whether your current experience is sufficient, which technical areas require focused practice, and how to sequence Oracle’s learning resources before checking the current exam details and scheduling options.
What does 1Z0-1123-25 validate?
1Z0-1123-25 is associated with the OCI Migration Architect Professional credential and focuses on migration architecture rather than isolated OCI service administration. The supplied Oracle material supports preparation around migration planning, connectivity, workload movement, validation, and source-platform translation. It does not provide a complete public exam blueprint, question format, passing score, or duration, so those details should be confirmed directly with Oracle before scheduling.
The central task is designing a migration that can be executed safely
The relevant skill is not simply naming an OCI service. A migration architect must connect discovery, dependency analysis, target design, connectivity, data movement, cutover, and validation into a workable sequence. During preparation, explain why a target architecture fits the workload, what must happen before replication, how launch dependencies are handled, and how the result will be checked after migration.
AWS-to-OCI migration is an explicit part of the material
Oracle added AWS-to-OCI content to the 2025 certification, including migration of AWS EC2 instances to OCI Compute with Oracle Cloud Migrations. The material includes asset discovery, planning, replication, launch, and post-migration validation workflows. Candidates should therefore study the migration lifecycle as a connected process instead of treating AWS terminology as a list of one-to-one service matches.
The credential’s naming may change while the exam identifier remains useful
Oracle’s 2026 OCI certification update says certification titles and logos no longer include calendar years beginning with that release. The supplied announcement identifies 1Z0-1123-25 as the exam for the OCI 2025 Migration Architect credential, while the learning path page uses the 2025 title. Check Oracle’s current certification page for the active title, exam association, and any replacement or transition information before booking an attempt.
Who should consider this exam?
This exam is most relevant to professionals who make or review migration decisions: cloud architects, infrastructure architects, platform engineers, database specialists, and IT professionals responsible for moving workloads to OCI. Oracle specifically names cloud architects, IT professionals, and others involved in migrating workloads to OCI. The right starting point is migration responsibility, not merely familiarity with OCI terminology.
Use your current workload experience to choose a starting point
Candidates with on-premises VMware and database experience can begin with target design and migration planning, then fill OCI-specific gaps. Oracle recommends understanding on-premises VMware-based environments and on-premises database deployments. Candidates coming from AWS should begin with EC2, EBS, discovery, rightsizing, and migration workflow mapping, while candidates from OCI operations may need more practice with source-environment assessment and cutover planning.
This is not a good fit for memorization-only preparation
The evidence describes architecture workflows and practical migration activities, not a narrow product glossary. A useful readiness test is whether you can defend a migration approach when constraints change: limited downtime, dependencies between applications, security requirements, database compatibility, network restrictions, or a need to evaluate running costs. If you can only recite service names, build more scenario-based understanding before scheduling.
Separate professional scope from prerequisites that Oracle has not supplied here
The supplied sources identify the intended audience and recommended background, but they do not state a formal prerequisite, required prior certification, or mandatory work experience. Do not assume that the recommendation about VMware and databases is an official eligibility requirement. Verify the current Oracle exam page for registration rules and candidate policies.
Which technical areas should you study?
Build preparation around the migration situations explicitly represented in Oracle’s course and announcement. The supported areas include on-premises-to-OCI planning, secure migration networking, Oracle-database migration, VMware workloads, containers on OCI Container Engine for Kubernetes, movement between OCI regions, and AWS-to-OCI migration. Treat these as evidence-based study areas, not as a substitute for a current Oracle exam blueprint.
On-premises migration requires a complete design, not just a target compartment
Study how an architect would inventory workloads, identify dependencies, select migration approaches, plan connectivity, and sequence execution. Include operational concerns such as availability, security, integration, rollback thinking, and post-migration verification. Draw a simple source-to-target diagram for each practice scenario and annotate the decision that could cause a migration delay or failure.
OCI networking is part of the architecture decision
Oracle’s associated course covers designing and configuring OCI networking for secure, high-performance migration connectivity. Review the network path required by the workload, the systems that must communicate during migration, and the controls needed to protect both transfer and runtime traffic. Practice explaining the design in terms of source access, target access, performance, security, and validation rather than memorizing isolated network features.
Database migration deserves its own study track
The course includes Oracle-database migration to OCI using practices intended to support high availability, security, and integration. Study database dependencies, availability requirements, data movement, application connectivity, and validation after cutover. When reviewing a design, ask what happens to the application during synchronization, how consistency is checked, and which integration points must be retested after the database reaches OCI.
VMware, containers, and regional moves broaden the scenario set
Oracle’s course includes migrating workloads to OCI and Oracle Cloud VMware Solution, moving containerized applications to OCI Container Engine for Kubernetes, and transferring workloads between OCI regions. These scenarios call for different questions about compatibility, networking, platform dependencies, deployment configuration, and recovery. Prepare a separate decision checklist for each rather than applying a single migration pattern to every workload.
AWS mapping includes cost and sizing decisions
Oracle says candidates learn to map AWS EC2 instances and EBS volumes to OCI equivalents and perform rightsizing and running-cost evaluations. Practice documenting the source workload profile, selecting a target shape or storage approach, identifying assumptions, and explaining what evidence would justify a change. A mapping table is useful only when it includes workload requirements and validation criteria, not just product names.
Are blueprint percentages available?
No domain weights or percentage breakdowns are included in the supplied official research. Do not plan your study around percentages copied from an unofficial page, and do not compare unlabeled numbers. Use Oracle’s current exam page or certification documentation for the authoritative blueprint if one is published, then record each percentage together with its exact exam-domain label before allocating study time.
How to study without a published weight distribution
Start with the areas that combine the most decisions: migration planning, networking, workload mapping, data movement, execution, and validation. Then use your background to identify risk. A database professional may need more practice with AWS and VMware scenarios; an infrastructure architect may need deeper database and container review. This is a practical prioritization method, not an official weighting claim.
Keep evidence and assumptions in separate notes
Create two columns in your study plan. Put Oracle-confirmed topics in one column and your own inferred subtopics or practice scenarios in the other. This prevents a reasonable study recommendation—such as drawing rollback paths—from being mistaken for a published exam objective. Recheck the official source before the final review because certification information can change.
What Oracle learning resources are available?
Oracle’s learning path is the natural first resource because it is specifically named for becoming an OCI Migration Architect Professional. The supplied page lists more than 11 hours of expert training and eight skill checks. Oracle’s associated course is listed as 11 hours and 18 minutes long. Use those figures as catalogue information for planning, while confirming the current page if the learning experience or title has changed.
Use the learning path for coverage, then convert coverage into decisions
Complete the relevant lessons in sequence, but do not stop when the videos or reading are finished. After each topic, write a short architecture decision: source and target, migration method, connectivity requirement, availability concern, validation method, and likely operational risk. The eight listed skill checks can help locate weak areas, but a completed check is not proof of exam readiness.
Use the course labs when they are available to your account
The course page contains lab-access instructions and states that candidates must schedule a lab to obtain lab time. It also provides a route for technical support and refers candidates to the lab tab and support section for issues. Availability may vary, so request access early rather than building a study schedule that assumes immediate lab capacity.
Treat lab access as practice for reasoning, not as a source of exam questions
A lab can help you connect network configuration, workload movement, and validation steps. Record what you changed, why you changed it, what dependency caused an issue, and how you confirmed the result. Do not seek or use leaked questions, exam dumps, or memorized answer sets. They do not replace understanding and may violate examination rules.
How should you prepare if your AWS experience is strong?
Begin with translation rather than relearning cloud concepts from scratch. Build a source-to-target inventory for EC2 instances and EBS volumes, then add discovery, planning, replication, launch, validation, rightsizing, and running-cost evaluation. After that, study OCI-native scenarios so your preparation does not become limited to AWS terminology.
A practical AWS-to-OCI exercise
Choose a representative application estate and document its compute, storage, network, identity, database, and dependency requirements. Map each relevant EC2 and EBS characteristic to an OCI target, list assumptions, and identify information that discovery must confirm. Then write the migration sequence from assessment through post-migration validation. Review whether the target is merely equivalent or actually right-sized for the workload.
Common AWS-focused mistake
The most likely preparation error is treating the exercise as a static service comparison. A migration decision depends on workload behavior, dependency order, downtime tolerance, security controls, and validation evidence. If your notes contain only paired service names, add operational steps and explain what could invalidate the mapping.
How should you prepare if your background is on-premises?
Use your infrastructure knowledge as an advantage, but deliberately learn OCI migration vocabulary and workflow boundaries. Start with discovery and dependency assessment, then study OCI networking, target workload placement, database migration, VMware options, containers, and regional movement. Make every exercise end with a launch plan and a verification plan.
A practical on-premises exercise
Create a migration brief for a VMware-hosted application and a separate Oracle database. Describe the source estate, required connectivity, target OCI services, migration order, availability objective, security controls, integration points, and acceptance tests. Then challenge your own design: what happens if replication falls behind, a dependency is missed, or the application fails validation after launch?
Common on-premises mistake
Experienced infrastructure candidates sometimes focus heavily on topology and under-document the business and application sequence. Add dependency owners, data consistency checks, cutover conditions, and post-migration monitoring to your notes. A technically plausible target is incomplete if the team cannot determine when it is safe to launch or how to confirm that the migration succeeded.
What is a realistic study roadmap?
A four-stage roadmap works well: establish the official scope, learn the migration patterns, practise end-to-end design, and perform a final evidence check. Keep the schedule adjustable because the supplied research does not provide an exam duration, question count, passing score, or current delivery format. Schedule only after confirming those details and your eligibility on Oracle’s current pages.
Stage one: establish your baseline
Read the Oracle announcement and learning-path description, then list the supported scenarios you already understand. Mark each as strong, familiar, or weak. Confirm the current exam title and status separately from the older 2025 page. At this point, do not buy an attempt or choose a test date simply because the learning path is available.
Stage two: learn the lifecycle in order
Study discovery before design, design before replication, replication before launch, and launch before validation. For each stage, write its inputs, decisions, outputs, and failure conditions. Include AWS-to-OCI asset mapping and cost evaluation, but also cover on-premises, database, VMware, containers, and regional scenarios from the associated course.
Stage three: practise complete architecture responses
Work through scenarios without looking at notes. For each one, produce a source inventory, target design, network plan, migration sequence, security considerations, availability approach, cost or sizing assumptions where relevant, and validation checklist. Compare your response with the Oracle course material, then revise the reasoning rather than memorizing a preferred sentence.
Stage four: perform a final readiness review
Check whether you can explain trade-offs, not merely recall definitions. Revisit every weak scenario, complete available skill checks, and use lab time to verify the parts that are difficult to understand conceptually. Finally, review Oracle’s current exam page for registration, delivery, pricing, title, and policy details because the supplied sources do not establish all of those items permanently.
How can you use labs without wasting study time?
Reserve lab time for actions that improve architectural understanding: configuring migration connectivity, tracing dependencies, moving a workload, checking the target state, and diagnosing an incomplete result. Before opening the environment, define the outcome you want. Afterward, record the commands or console actions at a conceptual level, the reason for each step, and the evidence that the result was correct.
Plan around Oracle’s lab-access process
The course page instructs learners to test and configure their system, schedule the lab, and check the course interface for access details. It also warns that resources may be in use and provides support instructions for technical problems. Confirm the current access process in your account, allow time for scheduling, and avoid placing your only hands-on session immediately before an exam attempt.
Do not mistake environment mechanics for exam delivery information
The supplied lab page contains browser, connectivity, username, password, and support instructions for the training environment. Those details describe course-lab access, not the 1Z0-1123-25 examination format. Oracle’s current exam registration page should be the source for delivery method, system requirements, identification rules, rescheduling, and other test policies.
What mistakes most often weaken preparation?
Weak preparation usually comes from studying services separately, ignoring source-environment constraints, or confusing course completion with readiness. Correct those problems by forcing every topic into a migration decision and by testing whether you can justify the sequence from discovery to validation. Keep official facts, personal assumptions, and practice conclusions clearly separated in your notes.
Mistake: searching for a shortcut through question banks
Unofficial question banks and exam dumps cannot establish legitimate readiness and may contain inaccurate or exposed content. Use the official learning path, course material, skill checks, and permitted labs instead. The goal is to reason through a new migration scenario, not to recognize a remembered answer.
Mistake: studying only OCI target services
Migration architecture begins with the source estate and its constraints. Include AWS EC2 and EBS, on-premises VMware, Oracle databases, containerized applications, and regional requirements where applicable. For each source, ask what must be discovered, what must be transferred, what must be reconfigured, and how the target will be accepted.
Mistake: ignoring validation
Oracle explicitly includes post-migration validation in the AWS-to-OCI workflow. Make validation concrete: application behavior, data correctness, connectivity, performance assumptions, security controls, and integration outcomes. A launch is an event; a successful migration requires evidence that the workload operates as intended after the move.
Mistake: relying on old year-labelled information
Oracle’s 2026 update says certification titles and logos no longer include calendar years beginning with that release. Older pages may still display the 2025 learning-path title, and the supplied learning path is stated to be archived on September 30, 2026. Confirm the active exam association and available learning resources before following an older preparation plan.
What are the cost and scheduling considerations?
Oracle’s August 6, 2025 certification-cost article listed OCI Migration Architect Professional among core OCI certifications with an exam attempt cost of US$245 and stated that the learning path was free. Because price, availability, currency handling, and registration rules can change, treat this as a dated official reference and verify the current amount and purchase conditions before payment.
Make the purchase decision after a readiness check
Before paying for an attempt, confirm that you can design and explain migrations across your weaker areas, not only the scenario closest to your job. Check the current Oracle certification page for the exam’s active title, registration path, delivery details, and policies. The supplied research does not provide a current exam appointment date, duration, question count, or passing score.
Confirm whether the learning path still fits your exam
The supplied learning path is labelled OCI Migration Architect Professional (2025), and Oracle says it will be archived on September 30, 2026. Oracle’s later update also explains the removal of calendar years from certification titles and logos. Use the current Oracle catalogue to determine whether the path remains recommended, has been replaced, or needs to be supplemented with newer material.
What should you do next?
Start by opening Oracle’s current certification information and the official learning path, then compare the documented scope with your experience. Choose one weak migration scenario, create a source-to-target design, and use the course material to correct it. Only after confirming the live exam details, current title, availability, and policies should you decide whether to schedule 1Z0-1123-25.
A focused next-action checklist
1. Confirm the current association between 1Z0-1123-25 and the OCI Migration Architect credential. 2. Review the official learning path and course scope. 3. Mark your gaps across AWS, on-premises, networking, databases, VMware, containers, and regional migrations. 4. Build end-to-end migration scenarios. 5. Use available skill checks and labs for verification. 6. Recheck official registration and exam details immediately before purchase or scheduling.
The best readiness signal is defensible reasoning
You are closer to readiness when you can take an unfamiliar workload, identify what must be discovered, select and justify a target, design secure connectivity, sequence replication and launch, account for dependencies, and define post-migration validation. That capability is more useful than a memorized catalogue of OCI services and gives your final review a clear purpose.
Conclusion
Prepare for 1Z0-1123-25 as a migration-architecture exam: connect source assessment, OCI design, networking, workload movement, cutover, and validation into decisions you can defend. Use Oracle’s documented AWS-to-OCI workflow alongside the on-premises, database, VMware, container, and regional scenarios in the associated course. Because the supplied research does not establish every live exam detail, confirm the current blueprint, title, delivery, price, eligibility, and scheduling rules with Oracle before committing to an attempt.
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