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Oracle job interview questions tips

Oracle Database Tips by Donald Burleson


There are many books available on Oracle job interview questions but many of them fail to address the "real" questions that a job applicant is likely to encounter.


the book Oracle Job Interview Handbook which is also a goldmine to Oracle job applicants.


Screening for work experience

You cannot study for experience, and with resume puffing and fraud being rampant, you need to quickly weed out posers. 

Many successful Oracle job interview questions are subtle, with answers that only an experienced DBA would know. 


Interviewer Note:  It's not important if the non-technical manages does not know the answer, you can tell by their demeanor if they are correct or not.

  • Easy:  Can you administer Oracle from the command line, without using OEM?  If they answer "no", stop the interview here.

  • Easy:  What is the name of Scott's Cat?

  • Easy:  What is the command to add a file to a tablespace?

  • Easy RAC:  What filesystems can you use with RAC?

  • Easy:  How do you migrate a change into production?

  • Easy:  What is the Oracle default SYSTEM password?

  • Medium:  How can you tell if a SQL statement needs tuning?

  • Medium:  What is the difference between the v$ and x$ tables?  

  • Advanced - What was the first Oracle data buffer pool advisory utility?

For UNIX/Linux applicants, these questions can be used:

  • Easy: How to you open a file read-only in vi?

  • Easy:  What does the oratab file do?

  • Easy:  How many shells do you know?  If they don't know that a shell is, they are a poser.

  • Easy:  What files contain the Oracle login profiles?  This is OS and shell specific. . .

  • Medium:  How do you change every occurrence of a string in vi?

  • Medium:  What columns are important in vmstat?

  • Advanced:  How can you tell if a server is paging?

Managers need to use questions that reveal real-world experience, especially in these days where resume fraud is an epidemic.  Many Oracle job candidates report that they need to be able to field unobtrusive questions.  For example, the Google job interview asks job candidates to explain complex database concepts in plain English:


"Explain a database in three sentences to your eight-year-old nephew."


In sum, there are many Oracle job interview questions, but we recommend using the job interview questions that the candidate is likely to hear in a real Oracle job interview.


Recommended Oracle Job Interview Books



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