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

DB Administration Interview Questions

Questions Answers Views Company eMail

I have kept recovery catalog on same target database and taken backup of target DB to disk. deleted the target DB & tried to restore and revoer DB using the backup on disk but it is not possible, how do we restore & recover DB

1936

If CPU is very slow What can u do to speed up?

1 4506

if monday take full backup and tuesday it was cumulative backup and wednesday we taken incremental backup, thursday some disaster happen then what type of recovery and how it will take?

1 4011

when we login sql editor using username and password then it says this error "could not resolve service name" then what can we do at client side.( here thing is tnsnames.ora file is ok till yesterday and worked well, but now it giving error.

1729

How many memory layers are in the shared pool?

3 7741

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

IBM,

2 11336

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

2502

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

3761

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

2464

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?

1987

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

4 7301

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

3217

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

4427

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

2550

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

1 3263

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Un-Answered Questions { DB Administration }

What are the different types of upgrades that can be performed in sql server? : sql server DBA

1210

List out some of the requirements to setup a sql server failover cluster.? : sql server DBA

1288

what is the use of ocr?

1033

1729

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

2942

How can you control the amount of free space in your index pages? : sql server DBA

1314

Database crashes. Corruption is found scattered among the file system neither of your doing nor of Oracle's. What database recovery options are available? Database is in archive log mode.

2282

Database is hung. Old and new user connections alike hang on impact. What do you do? Your SYS SQLPLUS session IS able to connect.

2043

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

2502

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?

1987

What is the difference between clustered and non-clustered index? : sql server DBA

1091

Explain materialized views and how they are used.

2443

Draft one mock email requesting your non-technical management grant you downtime to (provide justification where applicable) complete the following tasks: (1) Generate statistics on a large table; (2) Generate an RDA – if you don't know what an RDA is please say so. (3) Rename datafiles.

2168

Illustrate how to determine the amount of physical CPUs a Unix Box possesses (LINUX and/or Solaris).

1976

How would you extract DDL of a table without using a GUI tool?

2489

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