Martin Klier in DOAG.tv Interview: Oracle Standard Edition

A while ago, DOAG.tv interviewed me about Oracle’s Standard Edition and database system migrations. The material was published just recently, so I’d like to share it. Enjoy, and if there are questions, just let me know!

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http://www.doag.org/home/aktuelle-news/article/oracle-database-standard-edition-versus-enterprise-edition.html

I have to add a corrigenda: SE RAC is not - at least not at the moment – limited to a number of nodes. It’s currently limited to CPU sockets, to be exact, 4 of them. So a four-node SE RAC is possible, if I did not completely misunderstand the licencing policies.

Disclaimer: Licensing and pricing here are my OPINIONS, and not a reliable source to make decisions or confront Oracle with. :) If you need some tailored licensing information, feel free to email info-at-performing-db.com for advice.

Regards
Martin



DOAG 2014 Presentation and Whitepaper online: Database I/O

Hi,

my #DOAG2014 presentation and whitepaper are online now!

“Oracle Core für Einsteiger: Datenbank I/O”

Presentation: http://www.performing-databases.com/uploads/media/OracleCoreDatabaseIO-Klier-2014.pdf

Whitepaper: http://www.performing-databases.com/uploads/media/Klier-Database-IO.pdf

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Thank you all for attending!

Regards
Martin Klier



It’s #DOAG2014 time!

Hello World!

It’s time for all Oracle folks to congregate in Nuremberg for DOAG Konferenz 2014!

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I’d love to meet and greet you there – maybe you are also interested in my talk for Database Rookies: “Oracle Core für Einsteiger: Database I/O”:

https://www.doag.org/konferenz/konferenzplaner/konferenzplaner_details.php?locS=0&id=459293&vid=485382

Hope to have a great week with you!
Martin Klier

 



Visited Germany’s first Spatial Database, Size 26 kiloStones

Last week, I had the chance to visit Bavaria’s (and so also Germany’s) oldest Spatial Database. It’s buried deep below Munich, and contains all the geo information about Bavaria in scale 1:5000 and some in 1:2500. It was introduced in 1808 and was in use until 1950. That’s also the current state of the data.

Each of the 26,000 official maps is painted in oil and mirror-invertedly on polished lime sand brick. Each “page” is 1m x 1m (3.2ft x 3.2ft) in size, 4-6cm (2-3in) thick and the weight of each stone “disk” is approximately 70kg (154lbs). That makes it 26 Kilostones in size, with a dump size of 1,820,000 kg or 3,968,000 lbs.

Read more…



New German Linux Forum (forum.linux-talk.de)

In the last weeks, some folks were busy to build a new German Linux Forum “forum.linux-talk.de”, since the predecessor was systematically ruined by the commercial owners.

Especially Jean (wdp) and Hendrik (Nilpferd) invested much time and money into building the new environment. So the new forum is completely free of ads and commercials, and the content is QA’ed by a team of experienced Linux admins as moderators.

Please hang out there, and help us to (re)build a cool community.

Cheers
Martin Klier (Usn)



Performance is rarely an accident (Deutsch)

Some time ago, I saw a great presentation of Cary Millsap: „Thinking clearly about performance”. It was obviously relevant for our internal developers, so he unhesistantly granted me permission to reproduce some of his ideas for us. Cary, thank you very much!

Here you can see, what I made out of the topic, mostly for visualization purposes.

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Martin Klier: Performance is Rarely an Accident (pdf)

As I said, the intention was to show development teams, how beneficial it would be to think about performance at all, and that you’d need code instrumentation (=runtime meta information about application behavior) to get better.

I hope you enjoy the slide deck.
Martin Klier

Edit: Exchanged the basic version for Second Edition in Wiesau and Munich



Oracle 12c InMemory – don’t stop thinking about performance

Oracle has released its new database version 12.1.0.2 that includes the famous in-memory column store. InMemory option  promises a big advantage for OLAP-like work loads by keeping table contents in a columnar in-memory structure. InMemory is not new, they did that for decades, but the interesting part is “columnar”. There’s much writing about that on the net and in the Oracle Concepts Guide, no need to reproduce that here.

But though the new feature is very young, we already can see a “you can stop using your brain, we have a new catch-them-all feature” thinking, at least such a marketing sound. But it’s quite easy to show that this is not real. As for many other features we got over the years, using Oracle InMemory still needs a concept, done by an architect knowing the ups and downs.

What I can see from playing with Oracle Inmemory is, that it’s only beneficial when all data you (might) have to query from is already in the columnar cache (Oracle term is “populated”). If not, query response times don’t improve much. Let me show you my test case.

Read more…



Oracle 12.1.0.2 with In Memory Option available for Linux

As of today, the Oracle Database 12.1.0.2 with InMemory Columnar Store is available at https://edelivery.oracle.com.

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According to the price list of July 10th, it will be sold as an option for Enterprise Edition (Exadata NOT mandatory), for US$ 23,000 per CPU (calculation like EE).

Hope it will do well, beta demos were extremely impressive.

Yours
Martin



Oracle Core für Einsteiger: Datenbank I/O at DOAG 2014

Proud to announce, that DOAG accepted my tech talk “Oracle Core für Einsteiger: Datenbank I/O” for DOAG Conference 2014 in Nuremberg. It’s my next contribution to DOAGs thread aiming at beginners and part-time database people.

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The talk will be in German, here comes its abstract:

Oracle Core für Einsteiger: Datenbank I/O
Wir kennen verschiedene I/O-Typen, die die Datenbank benutzt um ihre Aufgaben zu erfüllen. Der Vortrag zeigt anschaulich wie sie sich unterscheiden, und erklärt, welche Vorteile die einzelnen Methoden bieten. Behandelt werden Zugriffe auf Tablespaces, Online/Archived Redo Logs und verschiedene Dateitypen, die mit der Instanz in Verbindung stehen. Eingeschlossen ist eine kurze Wiederholung der jeweiligen Funktion im RDBMS; ebenfalls enthalten ist ein “Crashkurs” zum Automatic Storage Management “ASM”.

Das Ziel des Vortrags ist, Einsteigern das Verständnis von Massenspeicheroperationen näher zu bringen und Hintergrundwissen für ein kompetentes Storage-Sizing zu vermitteln.

I’m also very happy to announce, that my business partner Benedikt Nahlovsky‘s presentation “Kostenlos aber effektiv: Performanceanalyse mit Statspack und SQL*” also was accepted. It’s all about doing professional performance analysis with STATSPACK and SQL* tools.

So Performing Databases is present with two sessions, we really appreciate it!

Looking forward to seeing you all at CCN East, Nuremberg Trade Fair, 18th-20th November 2014!

Stay safe
Martin Klier



Status Blog

Hello,

long time no see? Many things have changed here, so my time for blogging was limited.

  • Together with Benedikt Nahlovsky, I founded “Performing Databases“, a company to offer top-class database know-how combined with flexibility and agility. Doing all the formal requirements, and pushing business into life absorbed much of my free brain space.
    performing databases logo gif
  • In June, my daughter and second child, Rebecca, was born. Private life will never be the same again, but she’s a new bright star in my favorite constellation. Like it!
  • My latest employer, Klug GmbH integrierte Systeme became bankrupt and was purchased by TGW Logistics Group. That made lots of uncertainty and I had to change many of my priorities. Now a new era has begun, and we all are busy integrating a mid-size family shop into a big family shop (1700+300=2000 employees). In the end, we hope to become “TGW Software Services GmbH
    TGW_Logo_URL

But now I’m mounted again, and hope to fulfill my old promise of one blog per month again (if quality assurance allows it).

Wow, just out of curiosity I checked my webstat’s output: 2500 “visits” per day on average, that’s overwhelming! A good reason to say “Thanks for reading here!” today.

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CU soon
Martin Klier