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May 2012

Quick Reference README File For SLOB – The Silly Little Oracle Benchmark

This is just a quick blog entry with the main README file from SLOB – The Silly Little Oracle Benchmark. I frequently findings myself referring folks to the README so I thought I’d make it convenient. I’ve also uploaded this in PDF form here.

IOsaturationtoolkit-v2 with Exadata IORM and AWESOME text graph

I’ve got a new version of IOsaturation toolkit which you can download here http://karlarao.wordpress.com/scripts-resources/ and it has a cool script called “smartscanloop” that shows you the Smart Scan MB/s per database across the Exadata  compute nodes.. it’s a per 2secs sample so that’s a pretty fine grained perf data and near real time text graph. Very useful for doing IORM demos and monitoring what database is currently hogging the IO resources and since it’s presented in a consolidated view you don’t have to go to each Enterprise Manager performance page and have a bunch of browser windows open.

MOATS-like sqlplus “top” utility for RAC

 

So, you think MOATS was cool?! Check this out by Jagjeet Singh :)

 
 
 

Oracle E-Learning Resources

There is a lot of new stuff out there nowadays, regarding products and/or functionality or others. This is also true for Oracle and in short it’s not easy to follow all those innovations and/or new products. So from time to time I have a watch on stuff that interests me on the YouTube Oracle E-Learning

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Exadata

Here’s a final warning of the busy time I’m having next week. It starts with the E4 conference in Dallas (full  agenda here),my topic is “Due Diligence examining Exadata”.  Then it’s on to Minneapolis where I’ll be doing a one-day event on finding and reading Execution Plans (Agenda andRegistration).

UKOUG Conference 2012

Event date: 
Mon, 2012-12-03 - Wed, 2012-12-05

OUG Scotland Conference 2012

Event date: 
Wed, 2012-06-13

Six topic areas, 30 sessions, several Oak Table speakers, and a keynote from Tom Kyte.
 

Oracle’s Timeline, Copious Benchmarks And Internal Deployments Prove Exadata Is The Worlds First (Best?) OLTP Machine – Part II

There Is No Such Thing As “Pure OLTP”
There is no such thing as “pure OLTP.” How true! And that’s why you are supposed to buy Exadata for your Oracle OLTP/ERP deployment—at least that’s what I’ve heard.

Part I of this series on the topic of Oracle OLTP/ERP on Exadata Database Machine has brought quite a bit of feedback my way.  Most of the feedback came from independent consultants who have built a practice around Exadata. I did, however, hear from an Oracle customer that has chosen to migrate their Oracle Database 10g ERP system from a cluster of old AMD 2300 “Barcelona” Opteron-based servers (attached to a circa 2007 technology SAN) to Exadata. This customer also cited the fact that there is no such thing as “pure OLTP” and since it is a fact I don’t refute it.

Death of the Enterprise Architect?

Last week I read an interesting article about how cloud computing is changing the role of the enterprise architect and it got me thinking about the bad rap many architects are getting in the brave new agile, cloud, big data world.

From what I’ve been reading, there’s been a bit of a straw man argument going on — enterprise architects are often described as uber-control freaks who attempt to dictate software architectures in a repressive way to implementation teams. Mention the term “reference architecture” and you’ll often raise the hackles of the new developer-led world.

To be sure, there are many enterprise architects who match that description. And they’re the ones who give architects a bad name, just like undisciplined developers can give agile a bad rap too.

Recursive Subqueries for FizzBuzz

So in yesterday’s post I mentioned that I wasn’t happy with my solution. Among several reasons were the limit on the first 100 numbers, and the lack of using what I think to be a more elegant solution with recursive sub-queries.

Also, I received a comment about problems with the MarkDown plugin — which was also affecting my code posting, so I disabled MarkDown and can now handle code posting much, much better.

I couldn’t let it rest, so I dug into the recursive sub-queries with a vengeance and wrote up something more elegant.