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Oracle Interview Questions
Questions Answers Views Company eMail

How do you increase the OS limitation for open files (LINUX and/or Solaris)?

 1471

Provide an example of a shell script which logs into SQLPLUS as SYS, determines the current date, changes the date format to include minutes & seconds, issues a drop table command, displays the date again, and finally exits.

 1582

Explain how you would restore a database using RMAN to Point in Time?

 1640

How does Oracle guarantee data integrity of data changes?

 1938

Which environment variables are absolutely critical in order to run the OUI?

 1661

What SQL query from v$session can you run to show how many sessions are logged in as a particular user account?

 1 2936

Why does Oracle not permit the use of PCTUSED with indexes?

 1955

What would you use to improve performance on an insert statement that places millions of rows into that table?

 1 3045

What would you do with an in-doubt distributed transaction?

 1472

What are the commands youd issue to show the explain plan for select

 2 4226

In what script is snap$ created? In what script is the scott/tiger schema created?

 2250

If youre unsure in which script a sys or system-owned object is created, but you know its in a script from a specific directory, what UNIX command from that directory structure can you run to find your answer?

 1661

How would you configure your networking files to connect to a database by the name of DSS which resides in domain icallinc.com?

 1475

You create a private database link and upon connection, fails with: ORA-2085: connects to . What is the problem? How would you go about resolving this error?

 1 8040

I have my backup RMAN script called backup_rman.sh. I am on the target database. My catalog username/password is rman/rman. My catalog db is called rman. How would you run this shell script from the O/S such that it would run as a background process?

 1 3180

Un-Answered Questions { Oracle }

How i can handle exception in large code like 1000 line without distrubing the code or without exception handler sction?

2735

What do you mean by group by clause?

565

What is the disk migration? what is the steps involved in oracle disk migration?

724

Which function is used to find the largest integer less than or equal to aspecific value?

301

What is data block in Oracle?

620




How many types of canvases are there.

1

What is dba and functionalities of dba?

301

How to use attributes of the implicit cursor in oracle?

565

What is control file used for?

607

How would you configure your networking files to connect to a database by the name of DSS which resides in domain icallinc.com?

1475

What will you do if in any condition you do not know how to troubleshoot the error at all and there are no seniors or your co-workers around?

309

i am working with OC 4.5 i have numbers in table in 10 row with some null values please tell me how to find total? Thanks

1771

What do you understand by the term 'normalization'? Explain the various modes of normalization?

265

How to fetch the row which has the max value for a column?

542

How to see free space of each tablespace?

596

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