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Databases Interview Questions
Questions Answers Views Company eMail

How do you find out from the RMAN catalog if a particular archive log has been backed-up?

 1661

How can you tell how much space is left on a given file system and how much space each of the file systems subdirectories take-up?

 2395

Define the SGA and: How you would configure SGA for a mid-sized OLTP environment? What is involved in tuning the SGA?

 1860

What is the cache hit ratio, what impact does it have on performance of an Oracle database and what is involved in tuning it?

 1607

Other than making use of the statspack utility, what would you check when you are monitoring or running a health check on an Oracle 8i or 9i database?

 1515

How do you tell what your machine name is and what is its IP address?

 1516

How would you go about verifying the network name that the local_listener is currently using?

 1607

You have 4 instances running on the same UNIX box. How can you determine which shared memory and semaphores are associated with which instance?

 1448

What view(s) do you use to associate a users SQLPLUS session with his o/s process?

 1910

What is the recommended interval at which to run statspack snapshots, and why?

 2437

What spfile/init.ora file parameter exists to force the CBO to make the execution path of a given statement use an index, even if the index scan may appear to be calculated as more costly?

 1523

Assuming today is Monday, how would you use the DBMS_JOB package to schedule the execution of a given procedure owned by SCOTT to start Wednesday at 9AM and to run subsequently every other day at 2AM.

 1504

How would you edit your CRONTAB to schedule the running of /test/test.sh to run every other day at 2PM?

 1441

What do the 9i dbms_standard.sql_txt() and dbms_standard.sql_text() procedures do?

 4021

In which dictionary table or view would you look to determine at which time a snapshot or MVIEW last successfully refreshed?

 1 2766

Un-Answered Questions { Databases }

Is postgresql faster than mysql?

455

What is the purpose of TNS?

664

How do I insert an image into mysql workbench?

478

What are the parameters that we can pass through a stored procedure?

553

Is the primary key column of a table an index in ms sql server?

541




How to get the number of rows selected or affected by a sql statement?

509

Users are not being allowed on the system. The following message is received: ora-00257 archiver is stuck. Connect internal only, until freed. What is the problem?

276

What is normalization and its types?

539

How do I open a mongodb file on a mac?

1

Define model database?

576

Explain the etl (extraction, transformation, and loading)?

567

How to check database size in Oracle?

642

What is service broker? : sql server database administration

581

Why mysql is so popular?

516

How to create a new table in your schema?

607

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