Explain the difference between ARCHIVELOG mode and
NOARCHIVELOG mode and the benefits and disadvantages to each.
- 5 Answers
- 22407 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sampath
archivelog mode:
archivelog mode means that online redlogfile
copied to another location before overwritten.mainly it use
for recover purpose.
noarchivelog mode:
noarchive logmode means online redlogfile
not copied to another location each time overwritten by lgwr.
| Is This Answer Correct ? | 42 Yes | 1 No |
Answer / basobdutta
Archivelog mode - In archivelog mode cold and hot backups
are possible. We can recover our database upto the last
point of failure.
Noarchivelog mode- Here we can only go for cold
backup.Generally in this mode complete recovery is not
possible
| Is This Answer Correct ? | 17 Yes | 3 No |
Answer / neha
in nonarchivelog mode the online redo log file are
overwritten each time a log switch occurs.LGWR does not
overwrite an online redo file group until the checkpoint
for that group is completed.ex-operating system crash
causes an instance crash.
| Is This Answer Correct ? | 12 Yes | 5 No |
Answer / pv bhaskar
Archivelog mode : We can recover the database at any point
in time.
No Archivelog mode : There is no Recovery Process.
Because Online Redologs are overwritten. so there is no
Archives in this mode.
If there is Media Failure(loss of Disks or files) in this
mode we can restore from a backup but we will loss all
changes made to the database,After the backup was performed.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / niraj chilka
In Archivelog mode we can perform both hot and cold
backup.In this mode we can restore+recover the data.There is
no need to worry about the losing the data.But all it comes
about the performance then we should place the redo log
files on faster disk to avoid performance loss.Try to put
archive on faster disk and also try to commit less.If you
write PL/SQL program that commits after every DML,then your
database will work slow.
In NON archivelog mode we cant recover the database when the
instance crash.Therefore upgrade database to 11g and there
are some has new feature called fast increment
backup.Because of this would loss some instance amount of
data.In non archivelog mode the performance of database is
high.
| Is This Answer Correct ? | 0 Yes | 1 No |
what r the types of backup?
What would you do with an "in-doubt" distributed transaction?
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?
internal architecture
What background process refreshes materialized views?
2 Answers Accenture, FLSmidth,
currently iam working in mnc as a oracleappsdba,please send the EXPERIENCE RESUME those who r worked as a oracle apps dba
What view would you use to determine free space in a tablespace?
How would you go about increasing the buffer cache hit ratio?
What SQL query from v$session can you run to show how many sessions are logged in as a particular user account?
Define the SGA and: How you would configure SGA for a mid-sized OLTP environment? What is involved in tuning the SGA?
1. how do you delete duplicate rows in a table? 2. can you disable and enable primary key? 3. how do you move tables from one tablespace to another tablespace?????
how can a session indicate its interest in receiving alerts?
-
Oracle (3239) - SQL Server (4518)
- MS Access (429)
- MySQL (1402)
- Postgre (483)
- Sybase (267)
- DB Architecture (141)
- DB Administration (291)
- DB Development (113)
- SQL PLSQL (3312)
- MongoDB (502)
- IBM Informix (50)
- Neo4j (82)
- InfluxDB (0)
- Apache CouchDB (44)
- Firebird (5)
- Database Management (1391)
- Databases AllOther (288)
