Oracle - Hinglish guide

Oracle interview questions - Hinglish guide

Oracle database ke liye jaana jaata hai, aur interview mein DBMS aur OS ke sawaal gehre hote hain. Yahan unki taiyari hai.

Bhasha:EnglishHinglish

Oracle ke baare mein

Oracle database, business software aur cloud (Oracle Cloud Infrastructure - OCI) ki global company hai. India mein Bengaluru aur Hyderabad mein bade centres hain; interviews mein DBMS aur OS gehrai se poochhe jaate hain.

Is guide mein Oracle interview questions in Hindi (Hinglish) hain - 12 sawaal, har ek ke saath interviewer kya check karta hai aur kaise answer karein. Saath mein Oracle interview process round-wise, freshers ke liye 7 din ka taiyari plan, tips aur galtiyan jo nahi karni.

Oracle ka hiring process

  1. Step 1: Online assessment

    Aptitude, CS fundamentals (DBMS, OS) aur coding.

  2. Step 2: Technical rounds

    Aksar do - DSA (code chala kar ya dry run), DBMS/OS, SQL, aur project.

  3. Step 3: HR

    Oracle kyun, team fit, expectations.

Oracle apna interview process India freshers ke liye detail mein publish nahi karta (humare check ke time par). Yeh jaankari candidates ke reports par based hai aur role, level aur team ke hisaab se badalti hai.

Sources (checked 15 October 2026): Oracle Careers (oracle.com). Hiring process badalta rehta hai - apply karne se pehle official notice zaroor padhein.

Oracle interview questions aur answers

DBMS aur OS

  1. 1.ACID properties samjhao.

    Interviewer kya check kar raha hai
    Database transactions ki samajh.
    Kaise answer karein
    Atomicity (sab ya kuch nahi), Consistency (niyam na tootein), Isolation (transactions ek-doosre mein dakhal na dein), Durability (commit hua to tikega). Bank transfer ka example.

  2. 2.Index B-tree se kaise kaam karta hai?

    Interviewer kya check kar raha hai
    DB internals.
    Kaise answer karein
    Sorted, balanced tree - har level par range chhoti hoti jaati hai, isliye search O(log n).

  3. 3.Join aur subquery mein kab kya use karoge?

    Interviewer kya check kar raha hai
    SQL samajh.
    Kaise answer karein
    Do tables ka data saath chahiye to join; ek value ya list par filter karna ho to subquery. Performance plan par depend karta hai.

  4. 4.Paging aur segmentation mein kya fark hai?

    Interviewer kya check kar raha hai
    OS memory management.
    Kaise answer karein
    Paging = fixed size blocks; segmentation = logical hisse (code, data, stack) alag size ke.

Coding aur HR

  1. 5.Sentence ke words ulte karo: 'I love India' -> 'India love I'.

    Interviewer kya check kar raha hai
    String handling.
    Kaise answer karein
    Split karke ulta jodo, ya poori string reverse karke har word reverse karo (in-place).

  2. 6.Oracle hi kyun?

    Interviewer kya check kar raha hai
    Motivation.
    Kaise answer karein
    Database ya cloud mein aapka interest - specific aur sach.

Aur DBMS aur OS sawaal

  1. 7.Database mein deadlock kaise hota hai aur kaise sambhalte hain?

    Interviewer kya check kar raha hai
    Transactions ki gehrai.
    Kaise answer karein
    Do transactions ek-doosre ke lock ka intezaar karein. DB ek ko rollback karke todta hai; locks ek fixed order mein lena bachav.

  2. 8.3NF aur BCNF mein kya fark hai?

    Interviewer kya check kar raha hai
    Normalization gehrai.
    Kaise answer karein
    BCNF zyada strict - har dependency ka left side super key hona chahiye; 3NF mein kuch exceptions allowed.

  3. 9.Correlated subquery kya hai?

    Interviewer kya check kar raha hai
    SQL gehrai.
    Kaise answer karein
    Aisi subquery jo bahar wali query ki har row ke liye chalti hai - jaise apne department ke average se zyada salary wale.

  4. 10.Thrashing kya hai?

    Interviewer kya check kar raha hai
    OS memory.
    Kaise answer karein
    Jab system zyada time pages swap karne mein lagata hai aur asli kaam kam - memory kam aur processes zyada.

  5. 11.OCI kya hai?

    Interviewer kya check kar raha hai
    Company awareness.
    Kaise answer karein
    Oracle Cloud Infrastructure - Oracle ka cloud platform (servers, storage, databases).

Ek aur sawaal

  1. 12.Ek slow SQL query ko kaise tez karoge?

    Interviewer kya check kar raha hai
    Practical DBMS.
    Kaise answer karein
    Execution plan dekho, sahi index lagao, SELECT * hatao, aur zaroorat ho to query dobara likho.

Oracle interview ke liye 7 din ka taiyari plan

  1. Din 1: DBMS - ACID, transactions, isolation levels.
  2. Din 2: Indexing aur query optimisation.
  3. Din 3: SQL - joins, subqueries, correlated subqueries.
  4. Din 4: OS - memory, paging, thrashing.
  5. Din 5: DSA - arrays, strings, trees.
  6. Din 6: Project (khaaskar DB wala) aur HR.
  7. Din 7: Mock round.

Taiyari ke tips

  • DBMS aur OS ko gehrai se padho - yahan basics se aage poochha jaata hai.
  • DBMS wala project ho to bonus - uske design ke liye ready raho.
  • DSA mein code chala kar dikhana aur dry run - dono practice karo.

Ye galtiyan mat karna

  • DBMS ko sirf definitions tak padhna.
  • SQL queries likhne ki practice na karna.
  • Dry run maangne par seedha code chalane ki koshish.

Aksar poochhe jaane wale sawaal

Oracle interview mein kya zyada poochha jaata hai?

Commonly DSA ke saath DBMS, OS aur SQL - gehrai mein.

Oracle online assessment mein kya aata hai?

Aptitude, CS fundamentals aur coding - commonly reported.

Oracle mein kitne technical rounds hote hain?

Aksar do technical rounds aur ek HR report hua hai.

Isi tarah ki companies - Product aur internet companies

Aur company guides

Aage padhein

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Oracle interview ki taiyari ho gayi?

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