Log Buffer #268, A Carnival of the Vanities for DBAs

Apr 20, 2012 / By Fahd Mirza

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Log Buffer Editions are marching along, and this one is once again all about Oracle, SQL Server, and MySQL, plus some peeks at some other glittering database technologies like PostgreSQL and DB2. Sit back and enjoy!

Oracle:

Martin has produced another scenario-based blog post about shrinking tables to aid full scans.

What do you think of the interview questions for Oracle DBAs? Charles has a great post.

If you are trying to find out how Exadata architecture really works, Kevin is offering this video presentation to offer some critical thinking on the matter.

Karen just read an article from the Harvard Business Review entitled “The Magic of Doing One Thing at a Time” and thought it was excellent.

Cary is playing with puzzles.

SQLServer:

You may or may not already have heard about it, but the next version of our favorite database, SQL Server 2012, ships with a client tool called SQL Server Data Tools (SSDT). Valentino Vranken has more.

Chad Miller is answering a question in a forum on backing up, i.e. scripting out a database object.

Michelle Ufford is currently working on the logic migration of data marts from SQL Server to Teradata.

Mark Broadbent is wondering who’s active on SQL 2000.

John Sterrett is taking collaboration to another level and has a confession to make.

MySQL:

Pythian’s MySQL expert, Ben Mildren, has done YACR! (Yet another conference review!)

The Percona MySQL 2012 conference has seen the MySQL community interact as it was doing many years ago,
re-creating the dynamic and creative environment that allows MySQL to become the most adopted open source database.

Rob Young has put up a blog about New Replication, Optimizer, and High Availability features in MySQL 5.6.5!

Nowadays MySQL can, and does, use subquery materialization for query. The execution time can now be improved by 25%.

While working with RDS and Google Cloud SQL, Ronald Bradford has come to realize that excluding the mysql schema from a mysqldump is important.

The MySQL team increases scalability by >50% for Sysbench OLTP RO in MySQL 5.6 labs release april 2012.

NoSQL and MySQL – free webinar, replay now available as announced by Andrew Morgan.

Jorgen Loland writes about how copying unused bytes is bad. (duh!)

Things are going to be busy over the next few months for Keith Larson.

Setting up replication in MySQL is something we need to do quite often. Slaves die, replication fails, or tables and data get out of sync. Sean Hull has a nice post about it.

Misc:

Postgres has three backup methods: logical, file system, and continuous archiving. Bruce Momjian has more.

Joshua Drake gives information about some of PostgreSQL conferences and shares a video.

David Wheeler has a recommendation for sane time zone management in PostgreSQL: Always Use TIMESTAMPS WITH TIME ZONE.

Holly Ann shares the promised update on InfoSphere Optim Performance Manager (OPM) 5.1.1 that will be available April 30th.

IBM finally announced the new DB2 10 for Linux, UNIX, and Windows (LUW).

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