Re: RMAN incremental backup level ???
- From: "Leyi Zhang (Kamus)" <kamusis@xxxxxxxxx>
- To: karlarao@xxxxxxxxx
- Date: Sun, 20 Jun 2010 13:08:12 +0800
Maybe there are someone, haven't noticed incremental backkup changed
in someway after 10g, just like me :-)
If NO level 0 backup exists, what would happen when you issue a level
1 backup? I shared this reading to listers. Briefly, it depends on
compatibility initial parameter.
http://download.oracle.com/docs/cd/E11882_01/backup.112/e10642/rcmcncpt.htm
+++++++++
Differential Incremental Backups
In a differential level 1 backup, RMAN backs up all blocks that have
changed since the most recent incremental backup at level 1
(cumulative or differential) or level 0. For example, in a
differential level 1 backup, RMAN determines which level 1 backup
occurred most recently and backs up all blocks modified after that
backup. If no level 1 is available, then RMAN copies all blocks
changed since the base level 0 backup.
If no level 0 backup is available in either the current or parent
incarnation, then the behavior varies with the compatibility mode
setting. If compatibility is >=10.0.0, RMAN copies all blocks that
have been changed since the file was created. Otherwise, RMAN behaves
as it did in previous releases, by generating a level 0 backup.
+++++++++
--
Kamus <kamusis@xxxxxxxxx>
Visit my blog for more : http://www.dbform.com
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On Sat, Jun 19, 2010 at 9:52 AM, Leyi Zhang (Kamus) <kamusis@xxxxxxxxx> wrote:
> Actually start from 10gR1 doc, there's only incremental level 0 and 1,
> no 2,3,4 anymore.
> http://download.oracle.com/docs/cd/B14117_01/server.101/b10735/bkup.htm#1034168
>
> I think Karl mentioned MOS note should be 733535.1
>
> "Yes the backup incremental level 2 is supported in Oracle10g.
> Reference to this level was removed
> from the documentation for simplicity sake. Realistically, a level 2 =
> a differential level 1."
>
> --
> Kamus <kamusis@xxxxxxxxx>
>
> Visit my blog for more : http://www.dbform.com
> Join ACOUG: http://www.acoug.org
>
>
>
> On Fri, Jun 18, 2010 at 11:54 PM, Karl Arao <karlarao@xxxxxxxxx> wrote:
>> Afaik Yes .. I think the level 2 will still work but it will still be
>> treated as level1..
>> And There's a mos note about this.. I'll post it here once I get hold of it..
>>
>> I encountered this one when I was fixing an rman backup script on a client..
>>
>> - Karl Arao
>>
>> On Friday, June 18, 2010, dba1 mcc <mccdba1@xxxxxxxxx> wrote:
>>> I look ORACLE RMAN 11G user's guide and found RMAN incremental backup only
>>> have level 0 and 1.
>>>
>>> Is it true after ORACLE 10GR2 there is no level 2, 3, 4 incremental backup
>>> for RMAN?
>>>
>>> Thanks.
>>>
>>>
>>>
>>> --
>>> //www.freelists.org/webpage/oracle-l
>>>
>>>
>>>
>>
>> --
>> Karl Arao
>> karlarao.wordpress.com
>> karlarao.tiddlyspot.com
>> --
>> //www.freelists.org/webpage/oracle-l
>>
>>
>>
>
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