How to Tune Using v$mystat

When reviewing the performance of some queries, it is sometimes useful to review the sessions statistics for each execution of the query. I had a situation that required to look at these stats so I could see why one query would run fast and sometimes much slower. I wrote a simple wrapper ksh shell script for the query. It saves the session statistics in a table before and after the execution of the query and then prints out the statistics in a pivot report. This turned out to be very handy to me and therefore I chose to share it with the world :)

Big Data is the Commercial Supercomputing in the Age of Datafication

Modern commercial supercomputing in the age of Datafication is what we today call Big Data. I think a better term for it would be Data Supercomputing but the industry has already spoken so Big Data it is. The architecture shifted from environments that required massively-parallel compute-intensive number crunching to massively-parallel data-volume-intensive processing.

My Pythian Volunteer Day: Blood Donation


Every employee at Pythian can use one workday per year to spend on activities to help the community. We call it a Pythian Volunteer Day. It’s up to the employee to decide what to use if for and when. This year I used my volunteer day to donate blood and this post is a short story about my experience.

Log Buffer #310, A Carnival of the Vanities for DBAs

There are so many great blogs out there regarding Oracle, SQL Server, MySQL and various other database technologies. Keeping track of all of them is no less than a Herculean task. This Log Buffer Edition is an effort to pick few of those great blog posts to appreciate the oceans of database blogs out there.

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