Oracle General Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Oracle General Interview Questions

Questions Answers Views Company eMail

What is the purpose of init.ora. ? how many init.ora exist in oracle installation? suppose there are 3 database on one oracle server, how many init.ora do I have? what are various database objects? how will you identify memmory related performace issue in oralce? any idea about basic architure difference of oracle and db2? comment on which is better , with reasons? what is a fuction based index? is it recommended to use the same. ? what is global temporay table? what is teh signification of the parameter session_cached_cursor ?

HDFC,

1 5781

a query to select maxmun 3 salaries of employee table

IBM, Polaris,

12 20339

Ho to insert no. of records at a time..i mean i want to insert 100 records at a time into a table

5 10671

I have a database backup file in .db (ext) form how to conver it into .dmp (ext.) for oracle database

EDC,

2136

how to convert .db (extention) database file into .dmp (extention ) for oracle database ?

EDC,

2555

what is meant by magic query

2186

Define the terms primary key foreign key and also the difference between primary and the unique key

2 11202

What is autonomous transaction?

6 12225

i have a table and it has constraints and i want to get "ALTER TABLE table_name ADD CONSTRAINT constraint_name constraint type" this code must be in string type please help me if you want, i can give more explainings

2 4910

i must get table name, constraint type, constrain name with using concads "||" and it must be in string type, then with join processes i need code please help immidiately

1 4446

ex. one table is having 1 column with 10 records , then how to display all the values in row wise ?

4 7904

How to transfer database(500 gb) of oracle enterprise edition to standard edition downtime is only 1 hour not using exp/imp option ?

Digital Group,

3 7599

can any one help me with import/export options in oracle............

1 5783

Differnce between view and index

3 6135

SELECT * FROM (SELECT TITLE FROM MOVIE ORDER BY RANK DESC) WHERE ROWNUM > 4; when i run the above query .it produces output as NO ROWS SELECTED.why ?plz any one help me

TCS,

6 14322

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Un-Answered Questions { Oracle General }

What are the different types of partitions in oracle?

978

What is a server parameter file in oracle?

1058

What is the oracle implicit cursor?

1063

What are the different types of synonyms?

1140

What is the difference between Delete, Truncate and Drop in Oracle?

1131

various types of hints and their usage

2699

What is oracle join syntax?

1003

Explain about your project and its relation to the current job position you are applying to?

1007

How to change program global area (pga) in oracle?

1093

How to use "for" statements in oracle?

1075

How can we find out the current date and time in oracle?

1089

What is a read only transaction in oracle?

1029

Give the different types of rollback segments.

1031

What are the limitations of check constraint?

1033

How do you get nicely formatted results from an oracle procedure that returns a reference cursor?

1078

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