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

Oracle General (1803)
Oracle DBA (Database Administration) (261)
Oracle Call Interface (OCI) (10)
Oracle Architecture (90)

Oracle Interview Questions

Questions Answers Views Company eMail

1) WIll all the user get the DEFAULT profile, if their current profile got deleted at any point of time? 2) What are the Situation we need to MOVE the TABLE between T.spaces? 3) What is the use of MOVING the TABLE between SCHEMA'S? 4) What are the Table Clause, Segment Clause and the Datafile Clause which will override each other? 5) Explain SORT_AREA_SIZE of Tempfile to make UNIFORM SIZE

2014

1) What is ONE_SIZE_FITS_ALL approach? 2) Explain the Common & Variable Header of DATA FILE? 3) What are the Drawbacks to using OMF DB? and the Advantages? 4) List out the Advantages of Undo T.spaces over the Undo SEGMENT? 5) Difference between the Temporary tablespace with TEMPFILE and the Tablespace with TEMPORARY Keyword? 6) What are the situation extents are freeing for reuse.

TCS,

2148

what is the querry to get first 10 records from the emp table?(emp no is the primary key)

Verizon,

4 8299

What is Water Mark in Oracle?

Oracle,

7 23089

We need to compare two successive records of a table based on a field. For example, if the table is CUSTOMER, and the filed is Account_ID, To compare Account_IDs of record1 and record2 of CUSTOMER table, what can be the query ?

3 5415

How to call a stored procedure inside a trigger? Give an example.

Exilant,

1 11944

How to call a trigger inside a stored procedure?Give an example.

2 9034

Can we call a trigger inside a function and function inside a trigger? Give example.

Metric Stream,

1 14617

can we insert any row to dual table if i got the permission from DBA

HCL, Tesco,

5 17480

Why we are using primary key and foreign key in oracle and difference between primary key and foreign key?

1 4953

how to find the second highest salary in a given table????

5 8896

what is data abstraction

Semantic Space,

3 7231

IS it possible to built the oracle database without setting the kernal parameters?

EDS,

2399

I know that i can create a table without a primary key.But is there any significance for that table???? while creating an application.

6 8572

Shall I get Pro*C Compiler in Oracle-10g release ?

1 4727

Un-Answered Questions { Oracle }

What are functions of dba?

594

How do we represent comments in oracle?

1100

What is iapxtb structure? Explain its importance

types of indexes and the rationale behind choosing a particular index for a situation.

2564

How to estimate disk space needed for an export job?

1110

what is the difference between functional dependecy and multilevel dependency?

2521

What are the key characteristics of rac or why to use rac?

How many types of dba are there?

617

How you find which is the latest record in SCD type2 transformation?

657

What is tkprof and how is it used?

660

How to put more than 1000 values into an oracle in clause?

1090

Can you convert a bit-mapped report to ASCII (character-mode) Report ? How ?

2337

explain what is odi?why is it different from the other etl tools.

670

What is the purpose of scan?

How to store only time; not date and time?

1070

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