1Z0-1123-25 Exam Guide: OCI Migration Architect Professional
Exam 1Z0-1123-25 validates the migration-architecture skills Oracle associates with the OCI Migration Architect Professional credential, including moving workloads from on-premises and AWS environments into Oracle Cloud Infrastructure. It is aimed at cloud architects, IT professionals, and others responsible for migration work. This guide helps you decide whether the Oracle learning path matches your current experience, how to sequence study around migration decisions rather than isolated services, and what to verify before committing to an exam appointment or relying on the 2025 training materials.
What does 1Z0-1123-25 validate?
1Z0-1123-25 is the exam Oracle identifies for the OCI 2025 Migration Architect Professional credential. The evidence available for this guide describes a practical migration scope: assessing workloads, selecting target OCI designs, establishing connectivity, moving data and applications, and validating the result. Oracle also added AWS-to-OCI migration content to the 2025 certification.
The AWS focus is not limited to naming equivalent services. Oracle specifically describes mapping AWS EC2 instances and EBS volumes to OCI equivalents, then evaluating rightsizing and running costs. That makes comparison and decision quality central study themes. A candidate should be able to explain why a target design fits workload requirements, not merely recite a service name.
Oracle’s announcement says the certification is intended for cloud architects, IT professionals, and others involved in migrating workloads to OCI. It does not, in the supplied evidence, publish a complete exam blueprint, question count, duration, passing score, language list, or delivery format. Treat those items as details to confirm in Oracle’s current certification information before scheduling.
Who should choose this certification?
This certification is most relevant to people who make or review migration plans: cloud architects, infrastructure specialists, database professionals, VMware administrators, and technical leads coordinating application moves to OCI. It is a stronger fit for someone who must balance compatibility, security, availability, connectivity, cost, and cutover risk than for someone seeking an introductory OCI overview.
Oracle recommends understanding on-premises VMware-based environments and on-premises database deployments. Those recommendations matter because migration architecture starts with source-workload constraints. Before studying OCI services, assess whether you can describe a VMware estate, database dependencies, network paths, storage requirements, recovery expectations, and the operational checks needed after a move.
A candidate with only console familiarity may need foundational preparation first. Conversely, an experienced migration practitioner should use the course to identify OCI-specific gaps rather than spend equal time on every lesson. Record the source platforms, migration method, target service, dependency, validation test, and rollback concern for each scenario you study.
Which migration scenarios deserve priority?
Prioritize four scenario families: on-premises workloads to OCI, Oracle databases to OCI, AWS workloads to OCI, and specialized workload moves involving Oracle Cloud VMware Solution, containerized applications, or OCI region-to-region transfers. The associated Oracle course explicitly covers these areas, so they provide a sensible study spine even though the supplied sources do not publish percentage weights for exam domains.
For on-premises migrations, study the planning chain from inventory and dependency analysis through connectivity, target design, transfer, cutover, and verification. The course covers planning and executing workload migrations from on-premises environments to OCI. Your notes should connect each phase to a decision and an observable outcome, such as a dependency map, a tested network route, a completed replication cycle, or an application validation result.
For Oracle databases, focus on the architectural reasons behind a chosen migration approach. Oracle states that the course includes database migration practices intended to support high availability, security, and integration. Prepare to discuss how those requirements affect sequencing, connectivity, downtime planning, validation, and the relationship between the database and dependent applications.
For AWS-to-OCI work, follow Oracle’s stated workflow: asset discovery, planning, replication, launch, and post-migration validation. Include EC2-to-OCI Compute and EBS-to-OCI storage mapping in your practice. Add rightsizing and running-cost evaluation to every comparison, because a technically possible target is not automatically an appropriate target.
What technical areas should you study together?
Study networking as part of migration architecture, not as a detached OCI service list. Oracle says the course covers designing and configuring OCI networking for secure, high-performance migration connectivity. Your preparation should therefore link source and target networks, routing, access controls, transfer paths, performance needs, and validation tests in one design narrative.
Create a migration network worksheet with five columns: source location, target OCI location, required path, security control, and proof that the path works. Use it to reason through on-premises connectivity, AWS connectivity, database access, management access, and application-to-data flows. If a proposed design cannot state how traffic travels and how it is restricted, mark it as incomplete.
Keep workload placement and operational consequences together. For VMware scenarios, identify what the source environment requires and what the target platform must preserve. For containers, connect the application move to OCI Container Engine for Kubernetes and its surrounding network and integration needs. For region transfers, consider the source and destination relationship, data movement, application dependencies, and post-transfer checks.
Do not turn every product term into a flashcard without context. A better card asks: What migration problem does this capability address? What source information is needed first? What trade-off does the architect evaluate? What evidence shows that the migration succeeded? This format supports scenario reasoning and exposes gaps faster than vocabulary memorization.
How should you use Oracle’s learning path?
Use Oracle’s learning path as the primary sequence for the 2025 material, then convert each lesson into a decision record and a short recall test. Oracle lists the path as providing more than 11 hours of expert training and eight skill checks. Those published figures describe the learning path, not the exam itself, so do not treat completion as proof of readiness.
The associated course is listed as 11 hours and 18 minutes long. That is useful for scheduling study time, but it is not a recommended total preparation time. Pause when a lesson introduces a migration choice and write your own explanation before continuing. The goal is to reconstruct the architecture from requirements, not to finish video playback as quickly as possible.
Use the skill checks diagnostically. For every missed or uncertain answer, classify the problem as one of four types: source-environment knowledge, OCI service selection, migration sequencing, or validation and operations. Then revisit only the relevant lesson and create a new scenario-based question in your own words.
The learning path page states that the OCI Migration Architect Professional (2025) path will be archived on September 30, 2026. If you are planning to use it, confirm its availability and the current exam relationship directly with Oracle before building a long study schedule. Oracle also says that, beginning with its 2026 update, certification titles and logos no longer include calendar years. This naming change does not by itself establish that the exam code, objectives, or status have changed.
What is a practical study sequence?
A four-stage sequence works better than alternating randomly among services. First establish source-environment and migration fundamentals. Next study OCI target architecture and networking. Then work through AWS and database migration scenarios. Finally, rehearse complete decisions from discovery to validation and use weak-area review to decide whether to schedule.
Stage one: inventory what a migration architect must know before choosing a tool or target. Review VMware environments, database deployments, application dependencies, storage, network flows, availability requirements, security boundaries, and operational ownership. Produce a one-page source assessment for a fictional workload and list the information still missing.
Stage two: build target designs. For each source workload, identify the OCI destination, connectivity pattern, security considerations, data transfer or replication approach, cutover point, and validation plan. Include a reason for rejecting at least one alternative. This forces trade-off analysis and prevents service-name recognition from being mistaken for architecture skill.
Stage three: specialize. Work through AWS EC2 and EBS mapping, rightsizing, cost evaluation, discovery, replication, launch, and post-migration validation. Then review database migration with high availability, security, and integration in mind. Cover Oracle Cloud VMware Solution, containerized applications moving to OCI Container Engine for Kubernetes, and OCI region-to-region transfers as separate scenario branches.
Stage four: integrate. Give yourself a migration brief with a source inventory, a business constraint, a security requirement, and a recovery expectation. Write the proposed sequence without looking at notes. Check whether every major assumption has a test, every dependency has an owner, and every cutover step has a validation or rollback response.
How can hands-on labs improve preparation?
Use the Oracle course labs to test the parts of your design that are difficult to understand from diagrams alone, especially networking, access, migration workflow, and verification. Lab access requires scheduling through the course environment, and Oracle’s course instructions say to test and configure the system before participation. Lab availability and scheduling are separate from exam appointment details.
The course instructions describe a lab process with a request step and a schedule step. They also state that candidates should check back before the lab starts for access credentials. Because the page contains changing lab availability and support information, confirm the current instructions in the course before reserving time rather than relying on an old copy of this article.
When a lab is available, use it with a written objective. For example, begin with a connectivity question, record the intended route and security controls, perform the activity, and capture the evidence that the result works. Then explain how the same evidence would support a migration runbook. Avoid clicking through a lab merely to reproduce steps without understanding the dependency being tested.
Oracle’s course page includes lab support guidance and says technical issues can be raised through Oracle University support. It also warns against sharing lab credentials in community posts. Keep credentials private, record errors without sensitive values, and use the official support route if the environment is unavailable or a scheduled session fails.
What should you know about course access and lab planning?
The supplied course evidence supports planning for an online learning and lab experience, but it does not establish how the certification exam itself is delivered. The course page lists supported computer and browser environments and refers to an unshared internet connection, while lab access is separately requested and scheduled. Verify current exam delivery, identification, rescheduling, and system requirements with Oracle.
If you schedule a lab, reserve time for system checks before the technical exercise. The course instructions reference Oracle’s lab connection test and provide support pathways for technical issues. Some lab slots may be unavailable, and the page includes instructions for extending a lab environment; availability and extension rules should be confirmed in the live course interface.
Do not confuse a lab reservation with an exam appointment. A lab gives you a place to practice course activities. It does not prove that the certification exam includes performance tasks, and the supplied research does not state that it does. Keep your readiness decision based on knowledge of migration architecture and the current official exam information.
How much might the certification cost?
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 cost can change by region, program, tax treatment, or policy update, treat this as a dated Oracle-published reference and verify the current amount before purchase.
Separate the budget into exam attempt, optional formal training, study infrastructure, and any retake or travel implications that apply to your situation. The official evidence supports the learning-path and listed exam-attempt statements above, but it does not provide a complete current cost model for every candidate.
Do not purchase unofficial exam dumps as a substitute for preparation. Memorized or leaked material cannot demonstrate that you can design a migration, evaluate a target, or validate a cutover, and using unauthorized content creates integrity and security risks. Use the official learning path, course activities, your own scenario notes, and current Oracle information instead.
Which readiness mistakes should you avoid?
The most damaging mistake is studying OCI services without tracing a migration end to end. A design that names Compute, storage, networking, or database components but omits discovery, dependencies, replication, cutover, and validation is incomplete. Practice explaining the workflow and the evidence required at each stage.
Another mistake is treating AWS mapping as a one-to-one translation exercise. Oracle’s AWS material includes EC2 and EBS mapping, rightsizing, and running-cost evaluation. Compare workload characteristics, capacity, performance, storage behavior, connectivity, security, and operating cost before choosing the OCI equivalent.
Do not ignore the source environment. Oracle recommends understanding on-premises VMware environments and database deployments because migration decisions depend on what is actually being moved. If you cannot identify dependencies, downtime constraints, data characteristics, or operational ownership, pause OCI revision and strengthen source assessment first.
Avoid relying on an old exam label without checking Oracle’s current information. The supplied sources identify the code as the exam for the OCI 2025 Migration Architect credential, while Oracle’s 2026 update says calendar years were removed from certification titles and logos beginning with that release. Confirm the current credential name, exam association, objectives, and availability before scheduling.
Finally, do not use course completion as your only readiness signal. Reconstruct designs from unfamiliar requirements, explain why alternatives were rejected, and test whether you can describe post-migration validation. If your answers depend on recognizing a familiar lesson sequence, you need more scenario practice.
What should your final review look like?
Use the final review to test decisions, not to reread everything. Choose a workload scenario and produce a concise migration plan covering discovery, target mapping, networking, security, replication or transfer, launch, validation, operations, and cost or sizing considerations where relevant. Then compare your plan with the official course topics and investigate specific gaps.
Make a coverage matrix with rows for on-premises migration, Oracle database migration, AWS-to-OCI migration, VMware, containers, region-to-region transfer, and migration networking. For each row, record the target design, the migration sequence, the main risk, and the validation evidence. This exposes an area you have skipped without pretending that all topics carry equal exam weight.
Review AWS workflows in their stated order: asset discovery, planning, replication, launch, and post-migration validation. Review EC2 and EBS mapping separately, then add rightsizing and running-cost evaluation. For database scenarios, check high availability, security, and integration. For every topic, ask what information an architect needs before making the decision.
Schedule only after confirming the current official exam details and judging your own scenario performance. The supplied research does not provide a passing score, question count, duration, languages, or delivery mode, so those are not suitable criteria for a readiness calculation here. Use Oracle’s current certification page for those particulars.
What are the next actions?
Start by opening Oracle’s current learning path and course pages, confirming that the 2025 material is available for your intended study window, and checking the current exam listing for 1Z0-1123-25. Next, create a baseline scenario plan before studying. Its weak points will tell you whether to begin with source platforms, OCI networking, databases, AWS migration, or integrated architecture.
Complete the learning path in a deliberate order and use its skill checks as diagnostics. Build a personal migration workbook containing source inventories, target mappings, network diagrams, decision records, validation checklists, and unresolved questions. If a lab is available, schedule it only after checking system requirements and use it to test a specific design assumption.
Before paying or booking, verify the current exam price, credential naming, exam objectives, delivery method, scheduling rules, and availability through Oracle. The supplied sources establish the exam’s association with the OCI 2025 Migration Architect credential and describe the training scope; they do not establish every current appointment detail.
Your final decision should be simple: schedule when you can reason through complete migration scenarios and explain the evidence for success; extend preparation when you are still selecting services by memory, overlooking source dependencies, or treating post-migration validation as an afterthought.
Conclusion
1Z0-1123-25 preparation should center on migration decisions from discovery through validation. Use Oracle’s learning path to structure the work, the course labs to test selected assumptions, and scenario-based notes to connect source environments, OCI design, networking, databases, AWS mappings, sizing, cost, and operational proof. Confirm all time-sensitive exam, cost, naming, and scheduling details with Oracle before committing. The strongest next step is to write a complete migration plan now, identify its weakest decisions, and make those weaknesses the first targets of study.
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