| Other DB Administration Interview Questions |
| |
| Question | Asked @ | Answers |
| |
| What is the difference between the SQL Loader and IMPORT
utilities? | | 2 |
| How would you determine the time zone under which a database
was operating? | | 2 |
| 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?
| Wipro | 3 |
| How do you switch from an init.ora file to a spfile? | TCS | 2 |
| Explain CREATE DATABASE syntax? | | 1 |
| How many memory layers are in the shared pool? | | 2 |
| How to determine the service pack currently installed on
SQL Server? | | 1 |
| How can you rebuild an index? | | 5 |
| How do you find out from the RMAN catalog if a particular
archive log has been backed-up? | | 2 |
| 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 |
| What is RAID and what are different types of RAID
configurations? | | 1 |
| Explain the difference between $ORACLE_HOME and $ORACLE_BASE. | | 2 |
| Explain the difference between ARCHIVELOG mode and
NOARCHIVELOG mode and the benefits and disadvantages to each. | | 3 |
| what is the difference between off-line back up and on-line
back up in ibm db2 udb? | Zenith | 2 |
| what is ora 600? | | 1 |
| How do you resize a data file? | | 2 |
| How can you enable a trace for a session? | | 1 |
| What command would you use to create a backup control file? | | 1 |
| What view would you use to determine free space in a tablespace? | | 3 |
| what is the difference between db2start command and start
database manager command? | | 1 |
| |
| For more DB Administration Interview Questions Click Here |
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