ALL POSTS

Why You Need to Consider Upgrading to SQL Server 2012

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.

War Story: Applying Bundle Patch 1 to EM 12 Cloud Control

We have a few clients already using Enterprise Manager 12c Cloud Control. The interface and navigation have improved a lot from the 11g version in my opinion. However, as with any new release of anything, quite a few bugs still need to be fixed. After working with Oracle on some of these bugs last week, we were asked to apply the Bundle Patch 1 (BP1) to one of our clients’ installation. The first thing that I noticed when I started looking for information about BP1 was the amount of warnings from different people I found in MOS and around the internet.

Presentations for Ottawa Oracle User Group

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!

Locks, Latches, Mutexes, and CPU Usage

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 11.2.0.3 running on Linux. This is a excerpt of system calls being executed during a session waiting for a lock…

NoCOUG Contest: a Gentler, Saner Solution

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 Exadata Installed Base, Quantified

Update 13-June-2012: It has come to my attention that the numbers from the original source may have been incorrect or improperly released. To avoid confusion and potentially misleading information, the original content of this blog post has been removed.

First MySQL/MariaDB/NoSQL Latin American Event

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.

Should your ADR be on Shared Storage?

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.

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