Success is about Imagination

One thing that I have found sorely missing in the performance pages of Enterprise Manager is latency values for various types of I/O. The...

This past year I joined up on the board of the Northern California Users Group (NoCOUG) and am excited to help the NoCOUG team bring...

Nicer formating at https://sites.google.com/site/oraclemonitor/r-slicing-and-dicing-data R data types Converting columns into vectors...

I wanted to plot a set of data by 3 dimensions. I wanted to plot I/O read latency by MB/s throughput by number of concurrent readers....

If one is seeing  ‘enq: TX – row lock contention’ there could be a lot of reasons. One distinguishing factor is the lock mode. If the...

Here is a short video D3 Show Reel from Mike Bostock on Vimeo. Here is a longer tutorial video Data-driven Documents from London Web...

The human brain works so well because it calculates outcomes as it takes actions feeding back the current results compared to the...

Tom Kyte, Tim Gorman, Kellyn Pot’Vin, and Ben Prusinski are flying in to the Bay Area to present at NoCOUG Nov 15. I’ll be presenting as...

Oaktable world (aka Oracle Closed World) was an another amazing conference. We are already planning 2013 More videos will be posted as we...

From the article “Facebook shares some secrets on making MySql scale” “800 million users and handling more than 60 million queries per...

The first 3 videos of talks at Oaktable World are up: Connor McDonald 11g RAC upgrade drama http://oaktableworld.com/video-connor-mcdonal...

First 50 attendees each day to Oaktable World will receive a copy of Jonathan Lewis’ latest book “Oracle Core: Essentials for DBAs and...

The secret conference-within-a-conference formerly known as Oracle Closed World which used to be held at the same time as Oracle Open...

A customer called and wanted to know why the development database was so much slower than production when both databases were on the same...

Finally got to take Kevin Closson’s SLOB for spin. (BTW can one test dNFS with Orion at all?) Nice write up on SLOB by Yury Velikanov at...

Been a while since I blogged. There are a lot of things in the works but they involve a fair bit of scripting, thus I’m spending more...

There is more and more happening in the world of visualization and visualizing Oracle performance specifically with...

Database is getting high waits on buffer busy waits. Here is an example period where 5 sessions are completely blocked on buffer busy...

First look at the load on the database (see https://sites.google.com/site/oraclemonitor/dba_hist_active_sess_history...

OK,  so wordpress got hacked. I’ve had problems with this in the past and tried tactical surgery, but this time decided to do a full...