Re: 11gR2 rman compression algorithms
- From: Kevin Jernigan <kevin.jernigan@xxxxxxxxxx>
- To: "sethmiller.sm@xxxxxxxxx" <sethmiller.sm@xxxxxxxxx>
- Date: Thu, 4 Sep 2014 11:19:39 -0700
Why do you need to know the specific algorithms used for backup compression?
-Kevin Jernigan (Product Manager in Oracle Database team)
Sent from my iPhone
> On Sep 4, 2014, at 10:49 AM, Seth Miller <sethmiller.sm@xxxxxxxxx> wrote:
>
> Jeremy,
>
> No, I'm not sure. I copied that text verbatim from the book. The MOS note
> 563427.1 is probably the closest you're going to get to an explanation. But,
> I bet Fritz or Tanel could demonstrate conclusively exactly which compression
> algorithm is being used for each level using OS utilities.
>
> Seth Miller
>
>
>> On Thu, Sep 4, 2014 at 12:43 PM, Jeremy Schneider
>> <jeremy.schneider@xxxxxxxxxxxxxx> wrote:
>>> On Thu, Sep 4, 2014 at 1:22 PM, Seth Miller <sethmiller.sm@xxxxxxxxx> wrote:
>>>
>>> • HIGH: This level provides the best compression ratio, but consumes the
>>> most CPU. (It corresponds to the GZIP compression.)
>>
>> Just noticed this - are you sure "gzip" is correct? I think the gzip
>> program actually uses the zlib library to do the compression, so that
>> doesn't really make sense.
>>
>> --
>> http://about.me/jeremy_schneider
>
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