Re: Differential incremental backups

From: Jason Heinrich <jheinrichdba_at_gmail.com>
Date: Thu, 18 Mar 2010 08:56:58 -0600
Message-ID: <b32e774d1003180756t1dd852bbr15596022991f3590_at_mail.gmail.com>



Like levels 1 and 2, they are for backing up those blocks that have changed since the previous higher-level backup. They simply allow for breaking your incremental backup strategy into more pieces -- a deeper hierarchy if you will. I imagine not many people use them, but they're there if you want them.
--
Jason Heinrich


On Thu, Mar 18, 2010 at 8:47 AM, Guillermo Alan Bort
<cicciuxdba_at_gmail.com>wrote:


> Andrey,
>
> can you point to any documentation regarding levels 3 and 4? I can't seem
> to find any, and can't fathom what they are for.
>
> cheers.
> Alan.-
>
>
>
> On Thu, Mar 18, 2010 at 11:02 AM, andrey khudyakov <
> andrey.hudyakov_at_gmail.com> wrote:
>
>> Small clarification.
>> in fact, there are 5 levels of incremental backups.
>> 0 - is the base level, and 1-4 incremental levels
>>
>> 2010/3/18 Guillermo Alan Bort <cicciuxdba_at_gmail.com>
>>
>> According to Oracle Courseware (it's been a while, but I think I remember
>>> it right). There are Full Backups and Incremental Backups. Full Backups take
>>> the entire database, Incremental backups have different levels.
>>> Level 0 Incremental Backup: Takes the entire database (works just like a
>>> full backup, but is used for base point to level 1 and 2 incremental
>>> backups).
>>> Level 1 Incremental Backup: backs up all blocks changed after the most
>>> recent incremental backup at level 1 or 0
>>> Level 2 Incremental Backup (differential): backs up all blocks changed
>>> after the most recent incremental backup at level 0
>>>
>>>
>>>
>>>
>>
>
-- http://www.freelists.org/webpage/oracle-l
Received on Thu Mar 18 2010 - 09:56:58 CDT

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