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Oracle General Interview Questions
Questions Answers Views Company eMail

definition of cluster and non-clustered index?



how to get the index id?

Cognizant, TCS,

1 3991

Difference between join and a subquery?

Base Automation, NMDC,

8 39340

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

2 3969

How to create index-by table in oracle?

3 4077

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


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.



What is Water Mark in Oracle?


7 18515

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 3068

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


1 8548

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

2 7187

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

Metric Stream,

1 12225

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

HCL, Tesco,

5 13609

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

5 5417

what is data abstraction

Semantic Space,

3 4553

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Un-Answered Questions { Oracle General }

please explain.. DB architecture ...


What is blob data type in oracle?


What is the maximum limit on the number of columns in a table?


Describe an oracle table?


Can you assign multiple query result rows to a variable?


What do you understand by a database object?


How to create a table index?


How to run create database statement again?


What do database buffers contain?


What is oracle open database communication (odbc)?


Why is oracle so popular?


I just want to maintain data like an employee can belongs to 3 or more departments . We can resolve this by using composite key but it avoids normalization rules. So Can anyone tell me how can I maintain data.


How to filter out duplications in the returning rows using oracle?


What is the effect of setting the value "all_rows" for optimizer_goal parameter of the alter session command? What are the factors that affect optimizer in choosing an optimization approach?


Explain what does a control file contain?