OCI 1Z0-997-25 Study Plan: 30, 60, and 90 Days

OCI 1Z0-997-25 30-, 60-, and 90-day study plan with topic order, review loops, and final-week priorities.

This exam is scenario-heavy. Build architecture instincts around failure, security, boundaries, and operations instead of trying to memorize product lists.

How to use this plan well

Each study block should do four things:

  1. classify the scenario as continuity, boundary, control, operability, or service-fit
  2. decide which OCI design pattern belongs there
  3. do a short scenario set
  4. write down whether the miss was overbuilding, undercontrolling, or weak recovery logic
    flowchart LR
	  Classify["Classify continuity / boundary / control / operability"] --> Pattern["Choose OCI design pattern"]
	  Pattern --> Drill["Do short scenario set"]
	  Drill --> Review["Review why misses happened"]
	  Review --> Classify

How long should you study?

Typical candidates need 80 to 140 focused hours.

Your time Recommended timeline Good fit
18 to 22 hrs/week 30 days intensive path with prior OCI or architecture experience
10 to 14 hrs/week 60 days balanced path for most candidates
6 to 9 hrs/week 90 days part-time path with slower reinforcement

30-day intensive plan

Week Focus Output
1 governance, IAM, compartments, and control-plane thinking architecture-rule notes and short drills
2 advanced networking, hybrid connectivity, and boundary design network and boundary tie-break sheet
3 HA, DR, backups, replication, RTO, and RPO continuity notes and mixed sets
4 security architecture, operability, automation, and final readiness mixed sets and compression

60-day balanced plan

Phase Weeks Focus
1 1 to 2 terminology cleanup and architecture-lane classification
2 3 to 4 governance, IAM, compartments, and control patterns
3 5 to 6 advanced networking, hybrid connectivity, and path design
4 7 to 8 HA, DR, backup, replication, and continuity targets
5 9 service fit, automation, and observability
6 10 weak-lane repair and final mixed review

90-day part-time plan

Month Focus Goal
1 governance, IAM, and boundary vocabulary stop losing points to control confusion
2 networking, continuity, and service-fit trade-offs build stronger architect-level judgment
3 operability, automation, and final tie-breaks finish with mixed-set confidence

If misses cluster here, do this next

Miss pattern Weak lane Fix next
you choose continuity patterns that do not match the target continuity review HA vs DR, RTO, RPO, backup, and failover
you design with boundaries that are too broad or too weak boundary design review compartments, VCNs, subnets, and edge separation
you pick strong services but poor controls security and control review IAM, keys, audit, and network controls
you solve deployment-day needs but not day-2 operations operability review observability, automation, rollback, and repeatability

What strong prep usually does

  • classifies the lane first, then chooses the pattern
  • keeps a short confusion list for HA vs DR, backup vs replication, and control plane vs data plane
  • writes down why the winning answer reduces blast radius or simplifies recovery instead of just memorizing it
  • uses Oracle docs to settle disagreements, then comes back here for compression

Final 72 hours

Keep doing Stop doing
rereading the cheat sheet and glossary opening unrelated new OCI services
reviewing weak-lane misses treating every scenario like a feature checklist
checking official docs for disputed boundaries building a large new architecture lab late
practicing continuity vs boundary vs control vs operability classification trusting unsupported summary sheets over Oracle docs

Route yourself well

  • architecture, HA, and DR traps: Cheat Sheet
  • high-confusion professional-level terms: Glossary
  • last-week questions: FAQ
  • official Oracle and OCI source routing: Resources
Revised on Sunday, May 10, 2026