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

Oracle General Interview Questions

Questions Answers Views Company eMail

definition of cluster and non-clustered index?

CSS,

3033

how to get the index id?

Cognizant, TCS,

1 5650

Difference between join and a subquery?

Base Automation, NMDC,

8 45091

How to find no of saturdays in a month using single sql ?

2 5701

How to create index-by table in oracle?

3 6578

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

1970

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,

2093

What is Water Mark in Oracle?

Oracle,

7 22815

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 5239

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

Exilant,

1 11864

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

2 8946

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

Metric Stream,

1 14511

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

HCL, Tesco,

5 17277

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

5 8706

what is data abstraction

Semantic Space,

3 7081

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Un-Answered Questions { Oracle General }

What is columnar storage what is the advantage?

1062

Explain an exception?

993

How to view the tablespaces in the current database?

978

How to add another datafile to a tablespace?

1040

Can we insert data in view oracle?

1028

Explain the features of oracle?

1043

What is the difference between substr & instr functions?

1226

How to get a list of all background sessions in the database?

993

How to drop a tablespace?

1043

How to resolve the ORA-39133 error in Oracle?

1113

What is the usage of synonyms?

1142

What is a select query statement in oracle?

967

How to define a data source name (dsn) in odbc manager?

1029

How to load data from external tables to regular tables?

1062

You have 4 instances running on the same UNIX box. How can you determine which shared memory and semaphores are associated with which instance?

2008

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