MySQL

Non-deterministic Functions and the Binary Log

I wrote this post because I ran across this issue when debugging why tables with triggers/functions that were not getting replicated to slaves. The problem appears when binlog_format is set up  as STATEMENT. You can check the ‘change log’ checking the following link for more information about default values [1]. If you have non-deterministic functions…

Log Buffer #245, A Carnival of the Vanities for DBAs

Getting stuck on technical problems is a norm in the life of any IT professional and DBAs are no exception. With evolving databases and their streaming new features make it more challenging. Blogs often provide the Eureka moment for those problems. So sit back and enjoy this Log Buffer Edition, which is Log Buffer #245.

Log Buffer #244, A Carnival of the Vanities for DBAs

Managing the databases of any kind of any size in the production environment requires the administrators to remain up to date and on the toes every time. They need to learn fast and apply their knowledge fast. Keeping abreast of the newer features and the troubleshooting techniques is must for them and this Log Buffer Edition helps easing that task. Enjoy the Log Buffer #244.

How to recreate an InnoDB table after the tablespace has been removed

Does your error log ever get flooded with errors like this one? [ERROR] MySQL is trying to open a table handle but the .ibd file for table my_schema/my_logging_table doesnot exist. Have you deleted the .ibd file from thedatabase directory under the MySQL datadir, or have you used DISCARD TABLESPACE? See http://dev.mysql.com/doc/refman/5.0/en/innodb-troubleshooting.html how you can resolve…

Announcing PalominoDB’s Non Profit Program

I’ve always had a dream of being able to use what we are doing at PalominoDB not only for our for profit clients, but for those who go out day to day helping those who need it.  We always try to work with clients who make people’s lives better, but there are those whose entire…

Getting a List of Users From the MySQL General Log

From time to time, organizations want to know if there are any users that are not used. For clients using MySQL 5.1 and up, that can handle a 1% overhead for general logging, we will enable the general log for a period of time and analyze the users that connect. Note: we have some extremely…

Log Buffer #243, A Carnival of the Vanities for DBAs

From Percona Live, London to TechEd Australia to Oracle Open World USA, the blogosphere of Oracle, MySQL, SQL Server and the related technologies is bustling with the eye witness accounts of these conferences, technical overviews, observations, predictions, and much more. This Log Buffer Edition covers all that and as usual more in Log Buffer #243.

PalominoDB Percona Live: London Slides are up!

Percona Live: London was a rousing success for PalominoDB.  I was sad that I could not attend, but I got a few people who sent “hellos” to me via my coworkers.  But on to the most important stuff — slides from our presentations are online! René Cannao spoke about MySQL Backup and Recovery Tools and Techniques (description) – slides (PDF)…

Automatic Downtimes in Nagios Without Using Time Periods

Monitoring systems are a great thing, and we rely heavily on Nagios here at PalominoDB.  We also rely heavily on xtrabackup for (mostly) non-locking, “warm” backups of MySQL.  In order to get a consistent backup with a proper binlog position on a slave, xtrabackup stops replication for a short period of time.  If the monitoring system…

Log Buffer #242, A Carnival of the Vanities for DBAs

Whenever Oracle Open World ends, it not only leaves the technology professionals in awe and full of pride, it also makes them come up with new and great blogging ideras and this Log Buffer Edition covers that flowing notions from bloggers across the Oracle and MySQL beauties, in addition to SQL Server in Log Buffer #242.

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