Oracle Staff Engineer Interview Questions and Answers

Q1. The question were related to sql and power bi
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Q2. How do you do data analysis before building the reports? What steps do you take?
Ans. 
Before building reports, I conduct data analysis by following a structured process.
• Define the objective of the analysis and the key questions to be answered

• Collect relevant data from various sources

• Clean and preprocess the data to ensure accuracy and consistency

• Perform exploratory data analysis to identify patterns and trends

• Use statistical methods and tools to analyze the data

• Visualize the data using charts, graphs, a...read more
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Q1. Leetcode medium questions were asked
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Strings and Arrays the interview was of 1hour and basics of java and framework was asked

Q1. No second round was scheduled for me.
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Q1. System Design Round1: Design a distributed log storage and analysis system
Ans. 
Design a distributed log storage and analysis system
• Use a distributed file system like HDFS or Amazon S3 for storing logs

• Implement a log aggregation system like Apache Kafka for collecting logs from various sources

• Utilize a distributed processing framework like Apache Spark for analyzing logs in real-time

• Consider using a NoSQL database like Cassandra for storing processed log data
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Q1. System Design Round2: Design a system similar to Zookeeper
Ans. 
Design a system similar to Zookeeper for managing distributed systems
• Use a centralized service for maintaining configuration information, naming, and providing distributed synchronization

• Implement a hierarchical namespace similar to file system paths for organizing data

• Utilize a consensus algorithm like Paxos or Raft for ensuring consistency and fault tolerance
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Q1. Coding Round1: DS Problem based on creating subs on DB table
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Q1. Coding Round2: DS Problem related to linux directory structure
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Q1. Googliness Round: Various questions about qulity, team player, leadership etc.
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Q1. Design bookmyshow
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Q2. Explain ur proj design
Ans. 
Designed a project to improve efficiency of data processing in a cloud-based system.
• Implemented parallel processing to handle large volumes of data

• Utilized distributed computing to reduce processing time

• Designed a scalable architecture to accommodate future growth
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Round duration - 60 minutes
Round difficulty - Medium

In first round, I was not able to complete code but explained the solution. 
Tip : Try to practice coding even if you have 10 years of experience.

Q1. 
Search In Rotated Sorted Array Problem Statement
Given a rotated sorted array ARR of size 'N' and an integer 'K', determine the index at which 'K' is present in the array.
Note:
1. If 'K' is not present...read more
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Q2. 
Minimum Jumps Problem Statement
Bob and his wife are in the famous 'Arcade' mall in the city of Berland. This mall has a unique way of moving between shops using trampolines. Each shop is laid out in a st...read more
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Round duration - 45 minutes
Round difficulty - Medium

Round 2 went very good. They gave a design question in this round.

Q1. Design a file searching functionality for Windows and Mac that includes indexing of file names.
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Round duration - 45 minutes
Round difficulty - Medium

The third round was also a design round.

Q1. How would you design a system for MakeMyTrip?
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Q1. How debugger works
Ans. 
A debugger is a tool used by developers to identify and fix errors in software code.
• Debuggers allow developers to pause the execution of a program and inspect its state at a specific point in time.

• They provide features like setting breakpoints, stepping through code, and viewing variable values.

• Common debuggers include GDB for C/C++ and pdb for Python.

• Debuggers can also be integrated into IDEs like Visual Studio and Ec
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Q1. Linux kernel internals
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Q1. Linux kernel internals
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