What compression do you use?
The following is an evaluation of various compression utilities that I tested when reviewing the various options for MySQL backup strategies. The overall winner in performance was pigz, a parallel...
View ArticleEncrypting your MySQL backups and more
Assuming you have a backup and recovery strategy in place, how secure is your data? Does a hacker need to obtain access to your production system bypassing all the appropriate security protection you...
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I will be speaking at Percona Live New York
Percona is back for a second New York Percona Live Conference. As the resident New York MySQL Expert, I will again be presenting. My session will be on MySQL Backup and Recovery Essentials. You can...
View ArticleVideo interviews at OTN Colombia
The following are short interviews from the Oracle Technology Network (OTN) event in Cali, Colombia. One with myself and another with Sheeri Cabral. These Videos are sourced from OTN Tour Latin America...
View ArticleRecent Presentations in Cali, Colombia
On July 4 I gave two presentations at the OTN Tour Day, and on July 5 I have three presentations at the MySQL Training Days. This was my 3rd visit to Colombia and it was great to see a receptive...
View ArticleMySQL client password security
In case you missed it, MySQL 5.6.6, also known as Milestone 9, was recently released. I have yet to install this, however just one part of the MySQL 5.6.6 Release Notes makes placing installing and...
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Joining the Continuent Team
This month I have joined the team at Continuent. No stranger to the MySQL ecosystem, Continuent provides replication and clustering technology for managing data between MySQL, Oracle, PostgreSQL,...
View ArticleSQLSTATE[HY000]: General error: 2006 MySQL server has gone away
This would have to be one of the most common MySQL error messages that is misleading to the end user developer. The MySQL Manual page confirms the broad range of possible conditions, but offers little...
View ArticleNot a cool new feature for Master_Host
I was surprised to find on a customer MySQL server this new syntax for Master_host in SHOW SLAVE STATUS. mysql> SHOW SLAVE STATUS\G *************************** 1. row ***************************...
View ArticleUpgrading to MySQL 5.5 on Ubuntu 10.04 LTS
Ubuntu does not provide an apt-get repository package for MySQL 5.5 on this older OS, however this is still a widely used long term support version. The following steps will upgrade an existing MySQL...
View ArticleSQL_MODE and storage engines
I was again reminded why setting SQL_MODE is so important in any new MySQL environment. While performing benchmark tests on parallel backup features with a common InnoDB tablespace and per file...
View ArticleTIMESTAMP data types and CURRENT_TIMESTAMP attribute
In the yet to be released MySQL 5.6.6 DMR, there has been a change to the restriction of just one TIMESTAMP column with the DEFAULT CURRENT_TIMESTAMP and ON UPDATE CURRENT_TIMESTAMP syntax. It is now...
View ArticleAn excellent conference (5 out of 5 stars)
I wanted to extend thanks as others have also about the excellent annual MySQL Conference, now a Percona Live event. This was easily the best run, attended and energetic event in at least the past 3...
View ArticleAmateurs – They give us professionals a bad name
Any person with half a brain would see from the error messages below that the MySQL server is not operating optimally, or more specifically the MySQL upgrade has not completely successfully and let...
View ArticleUTF-8 with MySQL and LAMP
A recent question on a mailing list was the best practices for UTF-8 and PHP/MySQL. The following are the configurations I used in my multi-language projects. MySQL UTF-8 Configuration # my.cnf...
View ArticleRecent Presentations Buenos Aires MySQL/NoSQL/Cloud Conference
The first annual Latin America MySQL/NoSQL/Cloud Conference was held in Buenos Aires Argentina from June 26-28. Kudos to Santiago Lertora from Binlogic who had the vision for the conference in his...
View ArticleMySQL Presentations to the Colombia Oracle Users Group
My slides for presentations on MySQL Backup and Recovery Essentials and Understanding and using MySQL in the Cloud from the Oracle Technology Network (OTN) event in Medellín Colombia are now...
View ArticleUnexplained (trivial) MySQL behavior
The -N or –skip-column-names is a convenient option with the mysql client to skip the header line of output. However I found when viewing the output via the terminal, some interesting and unexplained...
View ArticleAdditional DB objects in AWS RDS
To expand on Jervin’s Default RDS Account Privileges, RDS for MySQL provides a number of routines and triggers defined the the ‘mysql’ meta schema. These help in various tasks because the SUPER...
View ArticleAn unexplained connection experience
The “Too many connections” problem is a common issue with applications using excessive permissions (and those that grant said global permissions). MySQL will always grant a user with SUPER privileges...
View ArticleWhat SQL is running in MySQL
Using the MySQL 5.6 Performance Schema it is very easy to see what is actually running on your MySQL instance. No more sampling or installing software or worrying about disk I/O performance with...
View ArticleWhat is FTS_BEING_DELETED.ibd
I currently have on a MySQL 5.6 database using innodb_file_per_table the following individual tablespace file. schema/FTS_00000000000001bb_BEING_DELETED.ibd The schema is all InnoDB tables, and there...
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Percona Live Presentation: Improving Performance With Better Indexes
The slides for my Improving Performance With Better Indexes presentation at Percona Live 2015 MySQL Conference and Expo are now available. In this presentation I discuss how to identify, review and...
View ArticleExpired MySQL passwords
I was surprised to find on one of my websites the message “Connect failed: Your password has expired. To log in you must change it using a client that supports expired passwords. Not knowing that I was...
View ArticleQ: Does MySQL support ACID? A: Yes
I was recently asked this question by an experienced academic at the NY Oracle Users Group event I presented at. Does MySQL support ACID? (ACID is a set of properties essential for a relational...
View ArticleIdentifying MySQL SSL communication using ngrep
Prior to MySQL 5.7 client communications with a MySQL instance were unencrypted by default. This plaintext capability allowed for various tools including pt-query-digest to analyze TCP/IP traffic....
View ArticleDefensive Data Techniques
As a data architect I always ensure that for any database schema change there a fully recoverable execution path. I have generally advised to create a patch/revert process for every change. For...
View ArticleTDD for Infrastructure
Test Driven Development (TDD) is an important principle for producing quality software. This is not a new concept. The Extreme Programming (XP) agile methodology (1999) outlined the concept before the...
View ArticleUpgrading to AWS Aurora MySQL 8
With Aurora MySQL 8 now generally available to all, you may want to consider the plan for an upgrade path if you would like to take advantage of the new features for your application, for example,...
View ArticleWhat does the MySQL mysqlsh util.checkForServerUpgrade() execute
During a recent Aurora MySQL 8 upgrade process, a number of validation checks have failed. This is an analysis of the error message “present in INFORMATION_SCHEMA’s INNODB_SYS_TABLES table but missing...
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