Solved

Incremental or cumulative Export backup Oracle

Posted on 2011-09-04
4
858 Views
Last Modified: 2012-05-12
Hi Experts
Which backup type I should use (incremental  or  complete or  cumulative) for the following case?
For instance I have oracle database with 10 tables no changes will happened to this tables except only one table data only will be grown in daily basis.
What shall I select incremental or cumulative if I want to export only the data changed?
With example please?However I did the following script to make full export once daily

exp \"/@test1 as sysdba\" FILE=e:\jtest\test1.dmp LOG=e:\jtest\test1INCR.log FULL=Y ROWS=Y COMPRESS=Y STATISTICS=NONE DIRECT=Y RECORDLENGTH=65535 INCTYPE=COMPLETE

Now I need to know how to perform either cumulative or incremental backup. Please with example?
0
Comment
Question by:Haidar1
4 Comments
 
LVL 7

Accepted Solution

by:
MrNed earned 200 total points
ID: 36482185
You have to use RMAN to use incremental backups. Cumulative or Differential backups are types of incremental backups - ie they both back up data that has changed. The difference being Cumulative takes all changes since the last full backup while Differential takes all changes since the last incremental backup. What you need depends on how much data is changing, but most importantly how long you can afford to wait to perform a restore.

NOTE that using exp is not usable by RMAN's incremental backup schemes. You have to take a level 0 backup via RMAN first.

Sorry but I'm not providing an example, I really really think you should read the doco and write your own code to understand this perfectly: http://download.oracle.com/docs/cd/E11882_01/backup.112/e10642/rcmquick.htm#BRADV89353
0
 
LVL 7

Assisted Solution

by:Docteur_Z
Docteur_Z earned 200 total points
ID: 36484991
Remember export is NOT a BACKUP !

exp utility's INCTYPE parameter :
Specifies the type of incremental export. Options are COMPLETE, CUMULATIVE, and INCREMENTAL.

I never tried that thing, but look at http://www.orafaq.com/wiki/Export
I'm not sure exp with INCTYPE really fits your needs.
0
 
LVL 76

Assisted Solution

by:slightwv (䄆 Netminder)
slightwv (䄆 Netminder) earned 100 total points
ID: 36488502
>>Remember export is NOT a BACKUP !

It can be in certain situations.



It also appears INCTYPE is obsolete as far back as 9i.

What version of Oracle are you running?

>>Now I need to know how to perform either cumulative or incremental backup. Please with example?
 
What type of 'backup' you need is determined by your specific situation and recovery requirements.

For example:  Using EXP as a 'backup' means you will need to create a new database, users, etc...  then IMP the data back in.

0
 

Author Closing Comment

by:Haidar1
ID: 36489637
I will implement RMAN to do my backup.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Working with Network Access Control Lists in Oracle 11g (part 1) Part 2: http://www.e-e.com/A_9074.html So, you upgraded to a shiny new 11g database and all of a sudden every program that used UTL_MAIL, UTL_SMTP, UTL_TCP, UTL_HTTP or any oth…
How to Create User-Defined Aggregates in Oracle Before we begin creating these things, what are user-defined aggregates?  They are a feature introduced in Oracle 9i that allows a developer to create his or her own functions like "SUM", "AVG", and…
This video shows syntax for various backup options while discussing how the different basic backup types work.  It explains how to take full backups, incremental level 0 backups, incremental level 1 backups in both differential and cumulative mode a…
This video shows how to copy an entire tablespace from one database to another database using Transportable Tablespace functionality.

773 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question