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

Oracle General Interview Questions

Questions Answers Views Company eMail

when i run my query on yesterday it is fast but today it is slow why?

1 7690

how to find find & delete duplicate rows from two different tables?

Accenture, TCS,

3 11987

You have one employee table having 3 entries emp_id, Mgr_id and salary. Mgr_id is also referencing emp_id. so now find out the emp_id which are having the second highest salary, under a particular manager.

Amazon, HCL,

3 8868

I'm doing my final year and i ve planned to do an oracle certification , is this the rit tim nd wat's the future scope??

1 3520

how to retrieve 1st and last row of table without using group functions??

6 8923

How to Identify the previously inserted/updated records in already populated table.

2776

how can get like this result table A col1 col2 --- ----- a A b B C C .. .. .. ... .. ... wants result like for a single column col1 ------ a,b,c,........n of data and another is col1 ------- A B C D ........ a b b d ........

TCS,

2 5148

without using count(*) and rownum how can we count total record in a table

AC, HP,

5 10400

you are sorting a table using "order by"(descending) clause of a column which contains a null value...whether that row containing null value will come first or last in the output??

BirlaSoft,

2 5949

What's dateware house and what's clustor with practicle example

2237

what's query optimization and without use of IN AND Exist can we get another way data from query

2200

What is tablespace in oracle? how can we create? how is it manage? . . . Thnx 2 All in Advnc....:)

3 5383

write a sql query following source looking like below column1 column2 101,102,103 abc,def,ghi 1001,1002,1003 a,b,c i want the output column1 column1 101 abc 102 def 103 ghi 1001 a 1002 b 1003 c

KPIT,

1 4597

write sql query following source are EmpID, Salary 101 1000 102 2000 103 3000 I want the output format like following empid,sal,composite_sal 101 1000 1000 102 2000 3000 103 3000 6000

TCS,

4 7279

Display the order number and the number of months since the order was shipped for all orders that have been shipped in the last year (365 days). (Hint: Unshipped orders will have a null value).

1 4035

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Un-Answered Questions { Oracle General }

What are the numeric comparison operations?

1168

What is oracle database 10g express edition?

1172

What do you mean by cdb and pdb in oracle 12c?

1102

How to execute the package in oracle?

1136

Can we use oracle pl/sql block in core java? if so how? pls get back to me .....

3023

Explain what are the different type of segments?

1004

How do I manually create a database in oracle?

1071

Explain oracle left join with an example?

1064

How to use subqueries with the exists operator in oracle?

1071

What is raw datatype?

1191

How can you merge two tables in oracle?

1049

How to open and close an explicit cursor in oracle?

1099

What are a cluster and non-cluster index?

1065

What do you mean by a deadlock?

1110

How to run queries on external tables?

1088

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