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Updated weekly · Last refresh Aug 30

OCI Interview Questions

The questions to prepare for OCI interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 5 questions · ~58 min
Lowest Common Ancestor in BSTEasy
Practice

Find the lowest common ancestor of two nodes in a binary search tree using BST ordering.

RecursionTreesOCI
Maximum Sum Contiguous SubarrayEasy
Practice

Use Kadane's algorithm to find the contiguous subarray with the largest sum in linear time.

Dynamic ProgrammingArraysGreedyOCI
Reverse Linked List In-PlaceEasy
Practice

Reverse a singly linked list in place by rewiring next pointers in one pass.

Linked ListsAlgorithmsOCI
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2
Pipelines3 questions · ~35 min
Large-Scale Object Storage ArchitectureHard

Tests your ability to design scalable storage systems with durability, availability, and performance considerations.

InfrastructureData ModelingQualityOCI
Distributed Metrics for OCIHard

Tests system design skills for scalable observability, ingestion, and aggregation across many services.

Data QualityInfrastructureStream ProcessingOCI
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3
Execution3 questions · ~35 min
Handling Bursty Traffic SpikesHard

Tests your ability to design resilient systems using load management, scaling, and failure handling.

Trade-offsExecutionRisk AssessmentOCI
Overcoming a Work ChallengeMedium

Tests your problem-solving approach and communication during difficult situations.

Trade-offsRisk AssessmentOCI
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4
Behavioral & Leadership7 questions · ~81 min
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5
More topics1 question · ~12 min
The finish line: interview-readyComplete all 19 questions to finish this plan.