Re: Differential incremental backups
- From: Guillermo Alan Bort <cicciuxdba@xxxxxxxxx>
- To: andrey.hudyakov@xxxxxxxxx
- Date: Thu, 18 Mar 2010 10:55:07 -0300
Orlando,
Also keep in mind that RMAN automatically manages retentions for you, so
if you tell it that you need to have a retention policy of 'RECOVERY WINDOW
7 DAYS', it will automatically keep all the backup files required to
guarantee that policy. You will also have to use RMAN commands to ensure
backup consistency when deleteing files (namely: delete obsolete).
Also, read the RMAN documentation, there are a lot of answers there:
http://www.oracle.com/technology/deploy/availability/htdocs/rman_overview.htm
http://www.oracle.com/pls/db102/portal.portal_db?selected=4
Alan.-
On Thu, Mar 18, 2010 at 10:43 AM, andrey khudyakov <
andrey.hudyakov@xxxxxxxxx> wrote:
> William, you are mistaken.
> differential and comulative are exclusive to each other, but each of
> them is incremental backup.
>
> Orlando, if you want recover your database till some <recover_point>, you
> should have available all incremental backups until recover_point and all
> archived logs between start_time of last incremental backup and
> recover_point
>
> 2010/3/18 William Muriithi <william.muriithi@xxxxxxxxxxxxxxxxxxx>
>
> First, you said differential incremental backup. I believe differential
>> and incremental are exclusive to each other if I am not wrong.
>>
>> Now assuming incremental, you use the monday full backup and all
>> incrementals up to Thursday.
>>
>> If its differential, you use the full backup and the last differential
>> backup, which is Thursday
>>
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>> *
>> *
>>
>>
>>
>>
>
>
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