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Oracle DBA (Database Administration) Interview Questions
Questions Answers Views Company eMail

How can be determining the size of the log files?

 528

Show one instance when you encountered an error in alert log and you overcome that error. What actions you took to overcome that error.

 517

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?

 538

How can you tell if a tablespace has excessive fragmentation?

 550

If a tablespace has a default pctincrease of zero what will this cause (in relationship to the smon process)?

 534

What is a database instance?

 539

Which is the best option used to move database from one server to another serve on same network and why?

 500

What is the most important action a dba must perform after changing the database from noarchivelog to archivelog?

 591

How can you determine the number of sqlnet users logged in to the unix system?

 532

The system administrator tells you that the system has not been rebooted in 6 months, should he be proud of this?

 516

How can you find your id on a system?

 517

What os user should be used for the first part of an oracle installation (on unix)?

 495

The system has a program that always includes the word nocomp in its name, how can you determine the number of processes that are using this program?

 527

You have installed oracle and you are now setting up the actual instance. You have been waiting an hour for the initialization script to finish, what should you check first to determine if there is a problem?

 556

Why are recursive relationships bad? How do you resolve them?

 525

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Un-Answered Questions { Oracle DBA (Database Administration) }

How can you tell if an index on particular table is used or not used in 9i?

524

What is dump destination? What are bdump, cdump and udump?

507

What is dba in sound level?

534

What is the difference between sga and pga?

551

What is tkprof and how is it used?

552

A developer is trying to create a view and the database won’t let him. He has the "developer" role which has the "create view" system privilege and select grants on the tables he is using, what is the problem?

643

How can you determine the space left in a file system?

582

Guideline for sizing db_block_size and db_multi_block_read for an application that does many full table scans?

562

What are four common errors found in an alert .log?

499

What database block size should I use?

663

What happens when the default and temp tablespace clauses are left out from create user statements?

534

Explain the various modes of normalization?

493

How can be determining the size of the log files?

528

What is the purpose of the import option ignore? What is its default setting?

553

What should a dba know?

479

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