Answer / mohapatra.gouranga@gmail.com

Recovery is not possible if no backup.
But inconsistent recovery is possible by following method:
1.shutdown your database
2.take the database in mount state
3. Make the tablespace of lost datafile to off line.
4.alter database create datafile 'old_datafile_path'
as 'new_datafile_path';
5. Made the database online.
6.once new file created do the incomplete recovery. from
any old backup.
7. open the database with resetlogs.

Answer / mohapatra.gouranga@gmail.com

Recovery is imposible if no recent backup available with
archive logs. But inconsistent recovery is possible if any
old backup pieace available. Can be followed following
method.
1.shutdown your database
2.take the database in mount state
3. Make the tablespace of lost datafile to off line.
4.alter database create datafile 'old_datafile_path'
as 'new_datafile_path';
5. Made the database online.
6.once new file created do the incomplete recovery. from
any old backup.
7. open the database with resetlogs.

how can you get actual data change values from previous transactions in oracle?

0 Answers   Oracle,

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Explain the difference between a FUNCTION, PROCEDURE and PACKAGE.

0 Answers  

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what is the difference between catalog & nocatalog?

3 Answers   CSC,

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Query processing is slow(eg select query)how will u solve that

3 Answers   TCS,

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How would you go about increasing the buffer cache hit ratio?

2 Answers  

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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?

1 Answers   IBM,

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what is the purpose of catlaog in oracle rman?

2 Answers   Value Labs,

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which background process will run @ the time of creation of catalog database

1 Answers   CSC,

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How can we know the exact updation date of a particular database?

2 Answers   Satyam,

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If you are given access to a sql server, how do you find if the sql instance is a named instance or a default instance? : sql server DBA

0 Answers  

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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.

0 Answers  

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What is the default port no on which sql server listens? : sql server DBA

0 Answers  

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