Oracle Certification Exam Interview Questions and Answers

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Oracle Certification Frequently Asked Questions in various Oracle Certification Interviews asked by the interviewer. So learn Oracle Certification with the help of this Oracle Certification Interview questions and answers guide and feel free to comment as your suggestions, questions and answers on any Oracle Certification Interview Question or answer by the comment feature available on the page.

  1. Oracle Certification Exam questions updated at 11 Jul 11 in Category Certifications and visited 553 Times

Oracle Certification Questions and Answers:

1 :: What will be the output for this query:
select 1 from dual minus select a from dual;

This will produce Error:
Expression must have same datatype as corresponding expression
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3 :: Explain What are transportable table spaces and the need to use them?

Transportable tablespaces are the fastest way for moving large volume of data between two oracle databases. We can use the transportable tablespaces feature to copy a set of tablespaces from one oracle database to another. Moving data using transportable tablespaces is much faster than performing either an export/import or unload/load the same data.
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4 :: What are transportable table spaces and the need to use them?

Transportable tablespaces are the fastest way for moving large volume of data between two oracle databases. We can use the transportable tablespaces feature to copy a set of tablespaces from oneoracle database to another. Moving data using transportable tablespaces is much faster than performing either an export/import or unload/load the same data.
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Top: Oracle Certification Exam Interview Questions and Answers
Oracle Certification Exam Interview Questions and Answers

Most Frequently Asked Oracle Certification Interview Questions

☺
Explain Which two statements are true regarding single row functions? (Choose two.)
A. They accept only a single argument
B. They can be nested only to two levels
C. Arguments can only be column values or constant
D. They always return a single result row for every row of a queried table
E. They can return a data type value different from the one that is reference
☺
Explain Which three statements/commands would cause a transaction to end? (Choose three.)
A. COMMIT
B. SELECT
C. CREATE
D. ROLLBACK
E. SAVEPOINT
☺
Explain What is the use of PARALLEL_ADAPTIVE_MULTI_USER initialization parameter?
☺
Which three statements are true regarding subqueries? (Choose three.)
A. Subqueries can contain GROUP BY and ORDER BY clauses
B. Main query and subquery can get data from different tables
C. Main query and subquery must get data from the same tables
D. Subqueries can contain ORDER BY but not the GROUP BY clause
E. Only one column or expression can be compared between the main query and subqeury
F. Multiple columns or expressions can be compared between the main query and subquery
☺
Which two statements are true regarding views? (Choose two.)
A. A subquery that defines a view cannot include the GROUP BY clause
B. A view is created with the subquery having the DISTINCT keyword can be updated
C. A view that is created with the subquery having the pseudo column ROWNUM keyword cannot
be updated
D. A Data Manipulation Language (DML) operation can be performed on a view that is created
with the subquery having all the NOT NULL columns of a table
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Frequently Asked Oracle Certification Job Interview Question


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