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

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Databases Interview Questions

Questions Answers Views Company eMail

How does Oracle guarantee data integrity of data changes?

1 2475

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

1 2193

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

1 3680

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

1 2494

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

1 3814

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

1 2065

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

2 5427

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

1 2769

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?

1 2218

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

1 1989

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 9091

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 4149

Explain the concept of the DUAL table.

2 6198

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

1 2486

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

1 3281

Un-Answered Questions { Databases }

How to rebuild the master database?

1151

What kind of problems occurs if we do not implement proper locking strategy?

1489

what is schema? : Sql dba

1127

Explain “row_number()” in sql server with an example?

1066

what is the command syntax for inserting a document?

Who proposed the relational model?

1027

What is the best sql course?

1038

How to remove duplicate rows from table except one?

1077

What are the pros and cons of putting a scalar function in a queries select list or in the where clause?

1284

Can one drop a column from a table?

1077

what is sql server agent? : Sql dba

1171

What are the risks of storing a hibernate-managed object in a cache? How do you overcome the problems?

1184

how many tables will create when we create table, what are they? : Sql dba

1136

What is the difference between upgrade and migration in sql server?

1170

Plz send me Oracle Pl/Sql [1z0-147] dumps to this mail? sivakumarr1987@gmail.com

1895

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