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Databases Interview Questions
Questions Answers Views Company eMail

How does Oracle guarantee data integrity of data changes?

 1936

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

 1658

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

 1 2931

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

 1953

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

 1 3042

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

 1469

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

 2 4223

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

 2245

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?

 1473

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 8035

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 3174

Explain the concept of the DUAL table.

 2 5136

What are the ways tablespaces can be managed and how do they differ?

 1618

From the database level, how can you tell under which time zone a database is operating?

 1 2172

Un-Answered Questions { Databases }

What do you mean by normalisation?

501

Which database is used by google?

474

what is the difference between blob and text? : Sql dba

529

What do you mean by sga and how is it different from pga?

1

You see a wait on lms process in statspack, what does that mean?

292




How do I run multiple versions of sybase on the same server?

446

What is mongodb query language?

1

What is the difference between clustered index and primary key?

507

How to order siblings in oracle hierarchy queries?

600

What is snowflake sql?

582

How to represent ENUMs and SETs internally?

641

Which is the most used database?

489

What is materialized view. What are different methods of refresh?

783

What are the different data types in mysql?

474

How sql server executes a statement with nested subqueries?

511

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