Re: The black box approach

From: Mladen Gogala <>
Date: Sun, 25 Dec 2016 13:59:26 -0000 (UTC)
Message-ID: <o3ojbu$ltu$>

On Sun, 25 Dec 2016 20:05:39 +1100, Noons wrote:

> On 25/12/2016 2:13 _at_wiz, Mladen Gogala wrote:
>> I rejoined, that is true, but my activity is very much toned down. The
>> plain truth is that the list is no longer very interesting. I am not
>> towing the line and I never will. My impression from the list is that
>> Oracle is trying to turn itself into a church, from being a
>> corporation.
>> They are treating the dissenters like heretics.
> You don't have to explain anything, Mladen.
> I know what you stand for and why you reckon it's so bad.

Hi Noons,
[Quoted] I am mostly having fun. Here is my post from today:

On 12/25/2016 12:43 AM, Tim Gorman wrote:
> >> Explaining those features is the least I could do for an Oracle ACE.
> Actually, the least you could do is explain them correctly.
> You started off OK in describing the Oracle in-memory implementation as
a column store, which is easy enough since it is. And you should have stopped there.
> Instead, you veered into the weeds with an odd analogy to bitmap
> indexes, which indicates either unfamiliarity with in-memory column
> stores, or with bitmap indexes, or both. There is nothing to suggest
> the method, the manner, the usage, or the impact of bitmap indexes in
> any in-memory column store implementation.

[Quoted] Actually, I didn't come up with that analogy. The credit goes to another Oracle ACE, soon to be retired:

[Quoted] With the in-memory columnar copy you should be able to drop many “DSS indexes”, thus improving OLTP response times – in effect the in-memory stuff behaves a bit like non-persistent bitmap indexing.

I can see that you disagree with such a description, but I cannot claim the authorship. I am glad you recognized that as a falsehood from a mile away and I am sure you will be able to correct the author.

[Quoted] Last but certainly not least, I wish you a merry Christmas.

Mladen Gogala
Oracle DBA

Mladen Gogala
The Oracle Whisperer
Received on Sun Dec 25 2016 - 14:59:26 CET

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