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Oracle Software Engineer Interview Questions

The questions to prepare for a Oracle Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

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Design an LRU CacheMedium

Implement an LRU cache in O(1) average time using a hash table and doubly linked list.

Hash TablesQueueLinked Lists
Recently asked
Oracle
Topological Course Ordering
Medium

Evaluates your understanding of graph modeling and topological sorting algorithms.

topological sortAlgorithms
Recently asked
Oracle
LRU Cache in Constant Time
Medium

Tests your ability to implement efficient caching with correct eviction behavior.

Data StructuresAlgorithmslru cache
Recently asked
Oracle
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Relational vs Non-Relational for Feeds
Medium

Evaluates your ability to choose data stores based on latency, consistency, and scaling needs.

Trade-offsdatabase design
Recently asked
Oracle
Event-Handling Engine for Low Latency
Hard

Assesses system design choices for low-latency event processing under high concurrency.

system design
Recently asked
Oracle
High-Throughput Microservices Gateway
Hard

Tests your ability to design scalable gateway components with security and traffic management.

rate limitingmicroservices
Recently asked
Oracle
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K-th Highest Salary With DENSE_RANKMedium

Assesses your SQL window function skills for ranking while handling duplicates correctly.

Window Functionssql
Recently asked
Oracle
Explain DBMS Indexing
Medium

Evaluates your understanding of indexing strategies and their impact on query performance.

indexingsqldatabase concepts
Recently asked
Oracle
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