DB Administration Interview Questions
Questions Answers Views Company eMail

How can you enable a trace for a session?

1 4965

What is the difference between the SQL Loader and IMPORT utilities?

3 18796

Name two files used for network connection to a database.

5 13047

Is it possible to run 32 bit sql server 2000 on64bit windows platform.if how much memory is available to sql server?

1 3291

what is the difference between db2start command and start database manager command?

1 4533

Which types of backups you can take in Oracle? 2. A database is running in NOARCHIVELOG mode then which type of backups you can take? 3. Can you take partial backups if the Database is running in NOARCHIVELOG mode? 4. Can you take Online Backups if the the database is running in NOARCHIVELOG mode?

11 28480

7. Where should you place Archive logfiles, in the same disk where DB is or another disk? 8. Can you take online backup of a Control file if yes, how? 9. What is a Logical Backup? 10. Should you take the backup of Logfiles if the database is running in ARCHIVELOG mode? 11. Why do you take tablespaces in Backup mode? 12. What is the advantage of RMAN utility? 13. How RMAN improves backup time? 14. Can you take Offline backups using RMAN? 15. How do you see information about backups in RMAN? 21. Where RMAN keeps information of backups if you are using RMAN without Catalog? 22. You have taken a manual backup of a datafile using o/s. How RMAN will know about it? 23. You want to retain only last 3 backups of datafiles. How do you go for it in RMAN? 24. Which is more efficient Incremental Backups using RMAN or Incremental Export? 25. Can you start and shutdown DB using RMAN? 26. How do you recover from the loss of datafile if the DB is running in NOARCHIVELOG mode? 27. You loss one datafile and it does not contain important objects. The important objects are there in other datafiles which are intact. How do you proceed in this situation? 28. You lost some datafiles and you don't have any full backup and the database was running in NOARCHIVELOG mode. What you can do now? 29. How do you recover from the loss of datafile if the DB is running in ARCHIVELOG mode? 30. You loss one datafile and DB is running in ARCHIVELOG mode. You have full database backup of 1 week old and partial backup of this datafile which is just 1 day old. From which backup should you restore this file? 31. You loss controlfile how do you recover from this? 32. The current logfile gets damaged. What you can do now? 33. What is a Complete Recovery? 34. What is Cancel Based, Time based and Change Based Recovery? 35. Some user has accidentally dropped one table and you realize this after two days. Can you recover this table if the DB is running in ARCHIVELOG mode? 36. Do you have to restore Datafiles manually from backups if you are doing recovery using RMAN? 37. A database is running in ARCHIVELOG mode since last one month. A datafile is added to the database last week. Many objects are created in this datafile. After one week this datafile gets damaged before you can take any backup. Now can you recover this datafile when you don't have any backups? 38. How do you recover from the loss of a controlfile if you have backup of controlfile? 39. Only some blocks are damaged in a datafile. Can you just recover these blocks if you are using RMAN? 40. Some datafiles were there on a secondary disk and that disk has become damaged and it will take some days to get a new disk. How will you recover from this situation? 41. Have you faced any emergency situation. Tell us how you resolved it? 42. At one time you lost parameter file accidentally and you don't have any backup. How you will recreate a new parameter file with the parameters set to previous values. 16. What is a Recovery Catalog? 17. Should you place Recovery Catalog in the Same DB? 18. Can you use RMAN without Recovery catalog? 19. Can you take Image Backups using RMAN? 20. Can you use Backupsets created by RMAN with any other utility?

IBM,

1 12478

how do we explain a project in cognos in an interview? please help me. Also how do we perform testing in cognos after creating reports?

HSBC,

2943

Which types of backups you can take in Oracle? 2. A database is running in NOARCHIVELOG mode then which type of backups you can take? 3. Can you take partial backups if the Database is running in NOARCHIVELOG mode?

1 4111

Can you take Online Backups if the the database is running in NOARCHIVELOG mode? 5. How do you bring the database in ARCHIVELOG mode from NOARCHIVELOG mode? 6. You cannot shutdown the database for even some minutes, then in which mode you should run the database?

FA, GE, Wipro,

11 23526

. 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?

1958

Can you take Image Backups using RMAN? . Can you use Backupsets created by RMAN with any other utility

Tech Mahindra,

1 10012

Should you place Recovery Catalog in the Same DB? . Can you use RMAN without Recovery catalog

4 12876

what is the last version,the release date of that version and fix pack of ibm db2 udb?

1497

what is the difference between off-line back up and on-line back up in ibm db2 udb?

Zenith,

2 8046


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Un-Answered Questions { DB Administration }

what is the last version,the release date of that version and fix pack of ibm db2 udb?

1497


What is transparent data encryption? : sql server DBA

540


what is the use of ocr?

575


Why would you call update statistics? : sql server DBA

556


Which dictionary view(s) would you first look at to understand or get a high-level idea of a given Advanced Replication environment?

1484






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

3913


what is logical system in sap basis

1103


What is a correlated sub-query? : sql server DBA

567


I got an error SQL1042C. An unexpected system error occurred. Explanation: A system error occurred. One possible reason for this error is that the database manager is not installed correctly or the environment is not set up correctly. On OS/2, while trying to start the database manager, a very common reason for this error is a corrupted NET.ACC file. The command cannot be processed. The tables and views would not be opened. What is the way to open the dataase? pls help me

3774


Explain materialized views and how they are used.

1865


What are the steps you will take to improve performance of a poor performing query?

2401


can u plz tell me what r the mandatory skills for getting job as a sql dba......plz send me all details thank you my id :k.mohann.mohan@gmail.com

1312


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

684


Where would you look for errors from the database engine?

2325


What is the difference between dropping a database and taking a database offline? : sql server DBA

552