UPDATE: Here’s the recording, enjoy!

Hello everybody!

#DBHangOps coming at you this week, Wednesday 1/30/12 at 12:00pm PST. Be sure to check out this blog post tomorrow or check this twitter search to grab the link to join the Google Hangout.

This week’s topics were:
* bug fixes in recent versions
* Plugins
** authorization plugins (e.g. LDAP)
** audit plugin API — http://dev.mysql.com/doc/refman/5.5/en/writing-audit-plugins.html
*** state transitions of records in MySQL with a plugin?
* InnoDB Status variables from twitter — https://github.com/twitter/mysql/wiki/InnoDB-Status-Variables
* Table alters/schema changes
** Twitter patch for non-blocking alter table (throws a different error than “lock_wait_timeout”) — …

Somebody ran into a problem after reading about the MySQL CREATE statement and the AUTO_INCREMENT option. They couldn’t get a CREATE statement to work with an AUTO_INCREMENT value other than the default of 1. The problem was they were using this incorrect syntax:

CREATE TABLE elvira
( elvira_id    int unsigned PRIMARY KEY AUTO_INCREMENT=1001
, movie_title  varchar(60))
  ENGINE=InnoDB
  CHARSET=utf8;

It raises this error:

      ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '=1001
, movie_title …

Just a silly article about a couple of instances recently where my colleague and I have both been duped by scheduled jobs. The feint and obvious lesson here is to be aware of your surroundings. I’m guilty of berating my 3 year old for spilling every glass of water she is handed because she’s unaware...

UPDATE: Here's the recording, enjoy!

Hello everybody!

#DBHangOps coming at you this week, Wednesday 1/30/12 at 12:00pm PST. Be sure to check out this blog post tomorrow or check this twitter search to grab the link to join the Google Hangout.

This week's topics were: * bug fixes in recent versions * Plugins ** authorization plugins (e.g. LDAP) ** audit plugin API -- http://dev.mysql.com/doc/refman/5.5/en/writing-audit-plugins.html *** state transitions of records in MySQL with a plugin? * InnoDB Status variables from twitter -- https://github.com/twitter/mysql/wiki/InnoDB-Status-Variables * Table alters/schema changes ** Twitter patch for non-blocking alter table (throws a different error than "lock_wait_timeout") -- https://github.com/twitter/mysql/wiki/Change-History#wiki-5.5.28.t8 ** Schemanator from Etsy -- …

This blog entry is on a step that many DBAs either skip, ignore, or do not know about. My last entry was on some install tricks and this time I want to cover where to put the various pieces of a MySQL server if you are looking to maximize performance. George Trujillo covered this for Oracle DBAs transitioning to MySQL but generally you do not see a lot of best practices information on this subject.

1. Pick a spot on a drive for the server software. It does not matter if it is /opt/mysql, /usr/local/mysql, or some variant.
2. Pick a spot on another drive that is on another disk controller for the log files.
3. Pick a spot on yet another drive that is on yet another disk for the data. Or get different spots for the various schemas you have to support — accounting, manufacturing, shipping all on different …

I wrote pt-archiver for jobs like deleting or archiving rows from a big table in small chunks. These days, that’s the kind of task I like doing inside the database, and Shlomi’s magical common_schema feels a lot more suited for this than an external Perl script.

When I say it’s magical, it really does feel magical. It’s amazing how he’s created an entire expressive scripting language that runs in MySQL and feels just right for the job.

Right now I’m watching this kind of stuff scroll by in my terminal:

+---------------------+
| rows_deleted_so_far |
+---------------------+
|             2871119 |
+---------------------+
1 row in set (7 min 42.67 sec)

+---------------------+
| rows_deleted_so_far |
+---------------------+
|             2872119 |
+---------------------+
1 row in set (7 min 42.75 sec)

Notice that the execution …

Postgres XC explained  Users demand faster processing and as the processing and reports get faster so do the expectation for even faster performance and scalability. Now days its unthinkable not to deliver the performance  and availability.
All of those challenges require a constant search/development of new and improves solutions. Enter Postgres XC just when you were thinking that RDBMS is dead it comes back with the vengeance. So what is exactly Postgres XC and why should anyone care? 
Postgres XC shares a common name with the Postgres RDBMS but this is where the similarities stop, Postgres is a standalone database, Postgres XC on the other hand is a distributed RDBMS in a "share nothing" configuration. With this publication I'll make an attempt to explain Postgres …

At Percona we offer a number of services. One of them, Custom MySQL Server Development, is commonly the most misunderstood and undervalued. There are a lot of ways Percona custom MySQL server development can help your business be more successful with MySQL. Here are some ways:

Bugs – There are Bugs in MySQL, Percona Server, and other products. By far the best and most cost efficient way to deal with Bugs is to have a Percona MySQL Support subscription which includes all you can eat bug fixes. If you need just one bug fixed this may be a way to go. Many bugs we’re tasked to fix are actually bugs in MySQL which the Oracle MySQL development team has not fixed. This does not only apply to “community reported bugs” as we had a number of customers who had an Oracle MySQL Support …

Informatica’s revenue is in. Hortonworks joins OpenStack. And more.

For 451 clients: Jitterbit gives integration stack makeover, continues to mine salesforce.com bit.ly/VJrwPE By Krishna Roy

— Matt Aslett (@maslett) January 28, 2013

For 451 clients: Enterprise cloud provider Skytap offers new service based on Cloudera Hadoop bit.ly/UpnXij By @rachelchalmers

— Matt Aslett (@maslett) January 25, 2013

For 451 clients: Alteryx plots course for 2013 as it seeks to bring business users into the analytic mix …

Recently we have helped our customer to migrate their entire application stack from one data center to another. Before we were brought on-board, customer had already placed an order for a new set of servers with the new hosting provider. All of them were suppose to be high-end systems – many CPU cores, plenty of RAM and RAID array build on top of SSD drives. As the new machines started being available to us, we began setting up the new environment. At some point it turned out that the new machines were actually slower compared to the several year old systems and their load was much higher under comparable traffic.

We examined several of the new servers and each time the conclusion was that the problems were related poor I/O performance. In the benchmarks a RAID 10 array on Intel SSD 330 Series drives was barely able to achieve 200-300 IOPS in random writes and even that at the cost of …