| Other DB Administration Interview Questions |
| |
| Question | Asked @ | Answers |
| |
| How can you enable a trace for a session? | | 1 |
| Explain an ORA-01555 | | 1 |
| You have just had to restore from backup and do not have any
control files. How would you go about bringing up this database? | | 2 |
| what is the difference between off-line back up and on-line
back up in ibm db2 udb? | Zenith | 2 |
| When a user process fails, what background process cleans up
after it? | | 1 |
| what is incremental checkpoint? | CTS | 1 |
| Give two examples of how you might determine the structure
of the table DEPT. | | 2 |
| What column differentiates the V$ views to the GV$ views and
how? | | 1 |
| Explian different types of BACKUPs avaialabe in SQL Server?
Given a particular scenario, how would you go about
choosing a backup plan? | | 1 |
| What background process refreshes materialized views? | | 1 |
| 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?
| | 5 |
| How do you find out from the RMAN catalog if a particular
archive log has been backed-up? | | 2 |
| Explain the difference between a hot backup and a cold
backup and the benefits associated with each? | TCS | 4 |
| How do you switch from an init.ora file to a spfile? | TCS | 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 ora 600? | | 1 |
| How would you determine the time zone under which a database
was operating? | | 2 |
| How would you determine who has added a row to a table? | | 3 |
| Give the two types of tables involved in producing a star
schema and the type of data theyhold. | | 1 |
| How can we know the exact updation date of a particular
database? | Satyam | 1 |
| |
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