Posts Categorized: Pythian
I’ve rewritten this blog post in the series to include other new features in SQL Server 2012 outside of high availability and disaster recovery. Ever since the product has been released, I’ve had a chance to look at features that will address performance challenges and business intelligence requirements.
The Ottawa Oracle User Group (OOUG) was kind enough to invite me to give presentations for a whole morning. The group was ultra engaged and asked a lot of good questions, so my usual 50-minute Big Data presentation ended up taking 100 minutes, and the rest of the content had to be squeezed a bit. I hope everyone had a good time!
So how is the actual “waiting on lock” implemented? How does session B, waiting for a transaction to commit started by session A, knows that the resource is free for use? To find out how it is implemented, I have traced Oracle foreground processes. I tried this on Oracle RDBMS 220.127.116.11 running on Linux. This is a excerpt of system calls being executed during a session waiting for a lock…
This is just a very short blog entry to inform folks that there is an open discussion group over at LinkedIn for SLOB topics of interest.
The actual challenge calls for a more generic solution than originally described in the magazine. Because there is no glory in half-solving a problem, I had to come back to it. And because the Great Karmic Balance could probably use it, I thought I could take advantage of the broader scope to produce a solution more geared toward elegance and modernism.
The first MySQL/MariaDB/NoSQL Latin American event is on its way, and Pythian will have a MySQL guy there. Yes, Francisco Bordenave (Team 14 TTL) is going to be one of the speakers. I am presenting a conference about replication in MySQL, how to’s, and what’s new in newer versions. This is a very important event, and many of our friends will be there.
I was on an Exadata environment with four RAC instances when a fellow DBA created an incident package. It was no big deal, except that part of the adrci packaging procedure was to take a backup of the controlfile and include it in the incident package. Though the package was created successfully, the controlfile never made it.
In the last few weeks, I launched quite a few small releases to CPAN. Taken separately, they are hardly worth a full blog entry, but taken together, they’ll make for a lovely N&I entry. So if you have been wondering what I’ve been up recently, read more!
For the 3rd year in a row, Pythian ranks among Canada’s Fastest-Growing Companies, securing a place on PROFIT Magazine’s PROFIT 200 list as a Canadian innovator, trailblazer, and job creator.
This posts finalizes a few weeks of work on comparing SLOB and ORION IO testing tools.