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Log Buffer #252, A Carnival of the Vanities for DBAs

As we all look forward eagerly to 2012, bloggers around the gblobe are writing about their insightful reflections on 2011. You’re also welcome to write your’s regarding to database arena in the comments, if you like. This Log Buffer Edition welcomes you to the new year with festive posts from Oracle, SQL Server and MySQL bloggers in Log Buffer #252.

Oracle Instance Memory Usage

How much memory does my Oracle instance use? How much memory do my database connections use? These are questions that can help with capacity planning of your server’s Physical and Virtual memory. There are several write ups out there on the web that attempt to address these questions. From what I could gather from them, there is only one truly good way to tell exactly how much memory is currently in use by an oracle instance, as well as the average memory usage for oracle dedicated connection processes. I explain it here.

Log Buffer #251, A Carnival of the Vanities for DBAs

ew Year is the time to bid farewell to the old year and welcome the coming year. It is the time to remember the golden olden blog posts. It is the time for new beginnings and new starts in life, and of course for new blog posts. Bloggers in the database arena are also enjoying the festivities with full zeal and zest and this Log Buffer Edition, which is Log Buffer #251 covers just that. Happy Holidays.

Cross-breeding Template::Declare with Moose

Say hello to Template::Caribou. The goal of that new template system? Steal or be inspired by a maximal amount of Template::Declare features, while using Moose as the core engine. For the rest of this blog entry, I’ll take you on a tour of that basic sample use, peeling the system from the outside in, hoping that the glitter of the outer layers will soften the shocks of the abominations of the inner mechanisms.

Once again about innodb-concurrency-tickets

I had to refresh my knowledge on how InnoDB threads queue works the other day when debugging activity spikes on one of the customer’s production system and while I had general idea about InnoDB kernel and queue, thread concurrency and queue join delays I didn’t have a complete model of how InnoDB concurrency control works. So I started from manual…

Extreme Makeover: Dungeon Edition

I have been working on my game recently and wanted to check out how to dig some caves. Without readily available software to do my excavations, I decided to give it a shot myself. To come up with an algorithm to create a decent dungeon or cave system was the hard part. At the end, I went with a very simple recipe that seems to gives fair results.

UKOUG 2011 Conference OakTable Sunday by Alex Gorbachev

This year, there were ten Pythian folks attending UKOUG Conference and we did twelve sessions including multiple presentations, masterclass, RAC Attack workshop, round-table and 10 minutes OakTalk. I think it’s the record number of session Pythian folks did at a single UKOUG conference and the record number of Pythian peeps attending. A dozen of Pythian people in Europe and now even a sales guy in the UK mean that Pythian penetration in the UK database services business is close to the infliction point. This is ultimately a good news!

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