Back in March of last year I wrote an article on the five frequently misused metrics in Oracle: These Aren’t the Metrics You’re Looking For.
To sum up, my five picks for the most misused metrics were:
- db file scattered read – Scattered reads aren’t always full table scans, and they’re certainly not always bad.
- Parse to Execute Ratio – This is not a metric that shows how often you’re hard parsing, no matter how (more...)
Random thoughts on a Friday afternoon…
We’ve all got problems. More to the point, every IT department or team has problems of some kind. It’s why we hire consultants, buy products, start long and arduous journeys into the great unknown depths of root cause analysis, and so on.
What fascinates me is the level at which we come to identify with our problems. When I’ve gone into an environment to deliver recommendations, the conversation usually (more...)
My current client has a large number of Apex applications, one of which is a doozy. It is a mission-critical and complex application in Apex 4.0.2 used throughout the business, with an impressively long list of features, with an equally impressively long list of enhancement requests in the queue.
They always have a number of projects on the go with it, and they wanted us to develop two major revisions to it in (more...)
Alchemists are best known for their (completely fictional and entirely ridiculous, but that’s besides the point) amazing ability to turn lead into gold. Let’s face it, there’s a lot of lead in the Oracle world. Bugs, angry developers, metrics that can seem to elude human understanding…but I (more...)
Funny thing I had today. Well funny, not when you want to make progress in your work, but still interesting what I discovered when I tried to isolate the problem…I found a way to make the same mistake and have Oracle return three different errors, dependent on the order of (more...)
You’ve purchased servers, storage space, switches, cables, and countless other pieces of hardware. The Oracle licenses are bought and paid for, Enterprise Edition with a few add-ons. All told, you’ve spent a small fortune on this infrastructure. It’s finally time to start up your database and begin using it for (more...)
[This entry is part 3 of 3 in the series Hadoop Streaming
In our first MapReduce with Hadoop Streaming in bash article, we took a collection of Stephen Crane poems and used a MapReduce job to calculate ‘term frequency’–meaning we counted the number of times each word in (more...)
[This entry is part 2 of 2 in the series Hadoop Streaming
In MapReduce with Hadoop Streaming in bash – Part 1 we found the ‘term frequency’ of words within a collection of documents. For the documents I chose 8 Stephen Crane poems, and our bash Map and Reduce (more...)
[This entry is part 1 of 1 in the series Hadoop Streaming
So to commemorate my recent certification and because my Java absolutely sucks, I decided to do a common algorithm using Hadoop Streaming.
Hadoop Streaming allows you to write MapReduce code in any language that can process (more...)
If you tired from the android emulator speed you may have read Chris Muir’s article ADF Mobile: Avoiding the Android Emulator with AndroVM.
In the meantime the successor of AndroVM is GENYMOTION.
If you have configured the port forwarding section from the AndroVM or use GENYMOTION, then you have to (more...)
Thank you all who attended my sessions at NYOUG Fall Conference this morning. I appreciate spending you most precious commodity - your time
- with me. I sincerely hope you found both the presentations enlightening as well as entertaining.
Please see the details of the sessions below along with the (more...)
Not too sure what I changed on my laptop, possibly just installation of another product or perhaps Microsoft or similar updates, but when I went to edit a BI Publisher RTF template I got the following error message on clicking ANY button in the BI Publisher plugin for Microsoft Word.
Do you know, that PMD can analyse XML files since version 5? Many of ADF files are XML configuration files – wouldn’t it be a good idea to create some static code analysis rules for ADF too?
Unfortunatly oracle configuration files in most times create references to dtd’s, which are (more...)
In the past I read following blogs from Shay Shmeltzer:
Now (after little code change in pmd) this integration is possible. I use here JDeveloper 22.214.171.124, with other versions this should be very similar. Now let’s (more...)
Matrix : What you must learn is that these rules are no different than rules of a computer system. Some of them can be bent, others can be broken. Understand?
Usually an unique index grants the uniqueness of all rows in a specific table which have non-null values; But (more...)
The New Zealand Oracle Users Group - NZOUG Conference 2013
is open for registrations
and Earlybird pricing is still available! The agenda
is now available.
NZOUG 2013 is being held in Wellington at the iconic Te Papa Museum
on the beautiful waterfront on the 18th and 19th of March, with an additional Workshop Day
on the 20th March.
The conference will see a wealth of brilliant speakers
from around the world, including Tom Kyte, Graham Wood, Andrew Holdsworth, John Schiff and Nadia Bendjedou and of course top speakers from Middle Earth
(NZ) as well. Tom, Andrew and Graham will be (more...)
Version control is a USB stick and a guy named Sahib
It has been too long since the last post. It is not that I do not want to, it is just way too busy…
I just came across a small problem where a .NET application written by someone else caused an ugly Stack trace with a ORA-942 (Table or View does not exist) after being moved to the next environment. The error was not there on development, so they asked me what the problem could be. At first I did my compare of grants to the Role I am supposed to use for the application. The problem is (more...)
(blogarhythm ~ Come Around Again - JET)
And that's a compliment!
Wow. This year we mark the 20th anniversary of the Visual Basic 3.0
launch way back in 1993.
It's easy to forget the pivotal role it played in revolutionizing how we built software. No matter what you think of Microsoft, one can't deny the impact it had at the time. Along with other products such as PowerBuilder
and Borland Delphi
, we started to see long-promised advances in software development (as pioneered by Smalltalk
) become mainstream reality: