Oracle Interview Questions & Answers

Below we have listed all the Oracle Interview Questions and answers. Feel free to comment on any Oracle Interview Questions or answer by the comment feature available on the page.

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Oracle Corporation (Oracle) is an enterprise software company. The Company develops, manufactures, markets, distributes and services database and middleware software, as well as applications software that help organizations to manage their businesses.

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	Question	Rating	View Answer
	With SQL, how can you return the number of records in the ?Persons? table? a) SELECT COLUMNS (*) FROM Persons b) SELECT COLUMNS () FROM Persons c) SELECT COUNTS () FROM Persons d) SELECT COUNTS (*) FROM Persons		View Answer
	What is function overloading?an example of function overloading in oracle?		View Answer
	What are Drawback of cursor?		View Answer
	How many codds rule should oracle satisfies		View Answer
	What is a dirty buffer?		View Answer
	The initialization parameter file has LOG_CHECKPOINT_INTERVAL = 60; What does this mean?		View Answer
	How many control files are required to create a database?		View Answer
	What is the prefix for dynamic performance views?		View Answer
	When you issue the command ALTER SYSTEM ENABLE RESTRICTED SESSION, what happens to the users who are connected to the database?		View Answer
	What is a basic difference between having and where clause?		View Answer
	A table is created with an INITRANS value of 2. Which value would you choose for INITRANS of an index created on this table?		View Answer
	What is the difference between object library and pl/sql library		View Answer
	Name the parts of the database buffer pool.		View Answer
	What is the difference between groupby and orderby?		View Answer
	List components of an Oracle instance?		View Answer
	What is the use of INCTYPE option in EXP command ?		View Answer
	How to get a calender in date field in oracle forms?		View Answer
	You have specified the LOGFILE clause in the CREATE DATABASE command as follows. What happens if the size of the log file redo0101.log, which already exists, is 10MB?		View Answer
	What is the difference between procedure and stored procedure?		View Answer
	Which command should be issued before you can execute the CREATE DATABASE command?		View Answer

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