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Previous 30 Newer Entries Showing entries 31 to 60 of 591 Next 30 Older Entries

Displaying posts with tag: database (reset)

Export and Import MySQL Databases
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When you have a MySQL server in production, backups are necessary to protect your data against any problem that may occur with your server. To make the backup and to restore the data, Exporting to a dump file The operation of export is also called dumping. To carry out the exporting, use the command msyqldump […]
Announcing: New Forum for Connector/Arduino!
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Due to the growing popularity of Connector/Arduino, the moderator of MySQL Forums has created a forum for us to meet up and discuss the connector. Yippie!

http://forums.mysql.com/list.php?175

While the forum has been started very recently, I expect it will grow quickly as people discover the connector for the first time and experienced users find new and interesting ways to use it. I hope to moderate the new forum periodically to answer questions and respond to posts. See you there!

Note: you need an account to write to the forum. Click on "register" in the upper right hand corner of the forum page to create an account if you do not already have one.


Installing MySQL on Ubuntu and CentOS
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MySQL is one of the most famous Open Source Relational Database Management System (RDBMS) created by Michael Widenius. Default choice in systems as WordPress and used by top companies as Google and Wikipedia. Due its simplicity and large community, it is largely used by developers and webmasters around the world. MySQL is under dual license: […]
MySQL Connect presentations on MySQL Fabric
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MySQL Connect Conference was a great success and I am really happy for being
able to attend it this year. Oracle showed interesting improvements and
exciting features in the upcoming MySQL 5.7 and released a very early alpha
version of MySQL Fabric which is a framework for managing farms of MySQL
servers.

You can find the presentations about MySQL Fabric on SlideShare:

  . MySQL Sharding: Tools and Best Practices for Horizontal Scaling
  . MySQL High Availability: Managing Farms of Distributed Servers

If you haven't watched yet Edward Screven and Tomas Ulin keynote on “The State
of the Dolphin”,











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MySQL Connect presentations on MySQL Fabric available on SlideShare
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Going to MySQL Connect was truly a blast. We got a lot of good questions and feedback in the sessions and there were a lot of interest in both MySQL Fabric and the MySQL Applier for Hadoop.

A big thank you to all that attended the talks, I got a lot of good questions and comments that will help us build good solutions.

The talks are available on SlideShare:





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#DBHangOps 10/02/13 — MySQL Utilities, Resource Management, and more!
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Thanks to everyone who came. Definitely check out the recording below!

Heyo everybody!

Coming up this Wednesday, October 2nd, 2013 at 12:00pm pacific (19:00 GMT) is another exciting #DBHangOps. Join the google hangout to discuss:

  • MySQL Utilities from Chuck Bell!
  • How do you constrain over-consumption of resources by competing applications?
  • Network vs. Local storage for MySQL
    • How do you use this for HA? Do you use DRBD or floating VIPs?
  • Secure connections to MySQL (using SSL) (requested by Daniel)
    • Do you have experience with this? What’s the performance impact?
  • PCI Certification with MySQL — what changed for you?
  • MySQL-isms!
    • (From Gerry) Sub SELECTs — Why aren’t these as

  [Read more...]
A Brief Introduction to MySQL Fabric
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As you saw on the keynote, we are introducing an integrated framework for managing farms of MySQL servers with support for both high-availability and sharding. It should be noted that this is a very early alpha and that it at this point is not ready for production use.

MySQL Fabric is an integrated system for managing a collection of MySQL servers and is the framework on which high-availability and sharding is built. MySQL Fabric is open-source and is intended to be extensible, easy to use, and support procedure execution even in the presence of failure, an execution model we call resilient execution.

To ensure high-availability, it is necessary to have redundancy in the system. For database systems, the redundancy traditionally takes the form of having a primary server acting as a master and using replication to keep secondaries



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Tips to Build a Fault-tolerant Database Application
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Applications should be written taking into account that errors will eventually happen and, in particular, database application developers usually consider this while writing their applications.

Although the concepts required to write such applications are commonly taught in database courses and to some extent are widely spread, building a reliable and fault-tolerant database application is still not an easy task and hides some pitfalls that we intend to highlight in this post with a set of suggestions or tips.

In what follows, we consider that the execution flow in a database application is characterized by two distinct phases: connection and business logic. In the connection phase, the application connects to a database, sets up the environment and passes the control to the business logic phases. In this phase, it gets inputs



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Writing a Fault-tolerant Database Application using MySQL Fabric
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In this post, we are going to show how to develop fault-tolerant applications using MySQL Fabric, or simply Fabric, which is an approach to building high availability sharding solutions for MySQL and that has recently become available for download as a labs release (http://labs.mysql.com/). We are going to focus on Fabric's high availability aspects but to find out more on sharding readers may check out the following blog post:

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#DBHangOps 9/17/13 — Data Warehousing, MySQL-isms, and MySQLConnect!
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And that’s a wrap! Check out the recording:

Hello!

Coming up this Wednesday, September 18th, 2013 at 12:00pm pacific (19:00 GMT) come and join #DBHangOps to discuss:

  • Data warehousing in MySQL
    • Shipping large tables from production to your Data warehouse
    • Do you use Federated engine?
    • What other solutions do you use?
  • Answer some questions about MySQL-isms (requested by Tim Callaghan)
    • Why does MySQL have FRM files instead of storing them in a data dictionary table?
    • Why doesn’t InnoDB support other page sizes?
    • Why do we store data in a master.info file?
  • What are you excited to see at MySQLConnect?

As always, take a


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#DBHangOps 9/4/13 — Data dictionary corruption, MySQL Utilities, Benchmarking, and MySQLConnect!
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Check out the video!
Hey there everybody!

Coming up this Wednesday, September 4th, 2013 at 12:00pm pacific (19:00 GMT) take part in #DBHangOps to discuss:


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Announcing MySQL Utilities release-1.3.4 GA
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The MySQL Utilities Team is pleased to announce the latest GA release of
MySQL Utilities. This release marks a milestone of concentrated effort to
expand the use of utilities in more diverse installations through improved
robustness, error handling, and quality.

Many Improvements


There are number such enhancements in this release. In this post we will
highlight a few of the more significant improvements.
  • (new utility) MySQL .frm Reader (mysqlfrm) - read .frm files and generate CREATE statements with or without a server connection.
  • (revised) improved documentation including a section on example administrative tasks - see http://dev.mysql.com/doc/workbench/en/mysql-utilities.html
  • MySQL Utilities is packaged for








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#DBHangOps 8/21/13 — Fractal indexes in TokuDB and Schema tracking
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Hey all!

Coming up this Wednesday, August 21st, 2013 at 12:00pm pacific (19:00 GMT) join in to talk about:

  • Gerry from Tokutek to talk about B-Tree indexes in InnoDB and fractal indexes TokuDB!
  • Schema Versioning
    • How do you manage schema versions in your development pipeline?
    • How are your schema changes deployed? Is it automated?
    • Some automated schema management tools:
  [Read more...]
#DBHangOps 7/24/13 — Innobackupex, schema migrations, and more!
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And all set. Check out the recording:

Hello everybody!

Coming up this Wednesday, July 23rd, 2013 at 12:00pm pacific (19:00 GMT) join in to hear:

  • Brandon Johnson from Mozilla talk about an issue he recently worked through with XtraBackup and the process he took to identify and resolve the issues.

And also take part in discussion around:

  • How do you apply production schema changes?
    • Do you use pt-online-schema-change?
      • Issues to watch out for
    • Just run the alter!
    • Pull from a pool and apply

Make sure to follow the #DBHangops twitter search, the DBHangops Twitter Feed, or this blog post to get a link for the google hangout on Wednesday!

Excited to see all of you joining in on the conversation!

SFTP virtual users with ProFTPD and Rails: Part 2
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In Part 1 of "SFTP virtual users with ProFTPD and Rails", I introduced ProFTPD's virtual users and presented my annotated proftpd.conf that I used to integrate virtual users with a Rails application. Here in Part 2, I'll show how we generate virtual user credentials, how we display them to the user, as well as our SftpUser ActiveRecord model that does the heavy lifting.

Let's start at the top with the SFTP credentials UI. Our app's main workflow actually has users doing most of their uploads through a sweet Plupload widget. So, by default, the SFTP functionality is hidden behind a simple button sitting to the right of the Plupload widget:



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#DBHangOps 7/10/13 — Plugins, Kernel Settings, and THP!
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All set, here’s the recording!

Hey there everyone!

Another informative and fun-filled #DBHangOps coming up this Wednesday, July 10th, 2013 at 12:00pm pacific (19:00 GMT). Join the discussion and contribute your experience on the following topics!

  • Plugins for MySQL
    • Which do you use?
    • Are there plugins that you want?
  • Kernel Parameters in Linux for MySQL, specifically:
  • InnoDB buffer pool size and settings
    • What works in your environment and why?
  • And If there’s time, information about the TokuDB storage engine in MariaDB!

Make


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#DBHangOps 6/26/13 — Common_Schema, Plugins, Kernel Params, and more!
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#DBHangOps for 6/26/13 is all done! Check out the recording below:

Hey everybody!

#DBHangOps is back this week at a slightly earlier time this Wednesday, June 26th, 2013 at 11:00am paciifc (18:00 GMT) . We’ll have special guest Shlomi Noach talking about the open source tools he’s developed to improve a DBA’s day-to-day work.

Be sure to check out the #DBHangops twitter search, the DBHangops Twitter Feed, or this blog post to get a link for the google hangout on Wednesday!

Thanks and see all of you there!

Welcome Tungsten Replicator 2.1.0!
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Overview


First off, the important news. Tungsten Replicator 2.1.0 was released today.
You can download it and give it a try right now.


Second, I would say that I am quite surprised at how much we have done in this release. The previous release (2.0.7) was in February, which is just a few months ago, and yet it looks like ages when I see the list of improvements, new features and bug fixes in the Release Notes. I did not realized it until I ran my last batch of checks to test the upgrade from the previous release, which I hadn’t run for quite a long





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David Axmark & Monty Widenius will be Berliners on June 18th - SkySQL & MariaDB Roadshow
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Join us at the next MySQL & Cloud Database Solutions Day hosted by SkySQL & MariaDB in Berlin on June 18th

It’s a beautiful day in Berlin today and we’re putting the final touches to next week’s MySQL & Cloud Database Solutions Day, which takes place on Tuesday June 18th in the facilities provided by Bitkom in Berlin Mitte.

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David Axmark & Monty Widenius will be Berliners on June 18th - SkySQL & MariaDB Roadshow
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Join us at the next MySQL & Cloud Database Solutions Day hosted by SkySQL & MariaDB in Berlin on June 18th

It’s a beautiful day in Berlin today and we’re putting the final touches to next week’s MySQL & Cloud Database Solutions Day, which takes place on Tuesday June 18th in the facilities provided by Bitkom in Berlin Mitte.

read more

#DBHangOps 6/12/13 — Patches, Python, and Migrations!
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Annnd all set! Check out the recording for the topics below:

Hello everyone!

We missed out on the last meeting time for #DBHangOps due to some conflicts, but we’re looking to come back strong this Wednesday, June 12th 2013 at 12:00pm pacific (19:00 GMT). Come join the discussion and contribute your experience on:

  • Upgrading to MySQL 5.6
    • Any issues or gotchas?
  • MySQL Python Utilities
    • How do you use them?
  • MySQL patches
    • Patches you use
    • Patches you want
  • Interesting or valuable Linux kernel settings

Be sure to check out the #DBHangops twitter search, the DBHangops Twitter Feed, or this blog post to get a link for the google hangout on Wednesday!

Looking forward to seeing you all there!

How big is a database?
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I got a question a while ago that I thought was quite simple, but turned into an interesting discussion: How much hard disk space does a database take up?

As it happens, there's a simple answer and a much, much more involved (yet ill-defined) answer, and which one you choose depends on what you think goes into a database and how very, very pedantic you are.

The Simple Answer

You can query the size of table and index data using Information Schema or SHOW TABLE STATUS. The columns DATA_LENGTH and INDEX_LENGTH contain the number of bytes for the table and index data respectively. You can construct simple queries based on that data, or do a quick search on the web for more interesting queries (For example, Peter

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#DBHangops for 5/15/13 — Filesystems, monitoring, settings, Oh my!
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Here’s the recording!

Heyo!

Now that we’ve gone through the Percona Live MySQL Conference and Expo review and had an amazing turnout to talk about it, it’s time to open up the discussion around things that DBAs want to talk about and need to be conscientious of. Join us on Wednesday at 12:00pm PDT (19:00 GMT) to take part in the discussion and share your knowledge and experience with the following topics:

  • Filesystems and MySQL — Which do you use and why?
    • Do you handle I/O alignment? How do you do it?
    • Scheduler changes?
  • Nagios checks! — Any new checks you’ve added recently?
  • The worst settings in MySQL that you always change
  • What are the most important variables to you,

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Foreign Data Wrappers
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Original images from Flickr user jenniferwilliams

One of our clients, for various historical reasons, runs both MySQL and PostgreSQL to support their website. Information for user login lives in one database, but their customer activity lives in the other. The eventual plan is to consolidate these databases, but thus far, other concerns have been more pressing. So when they needed a report combining user account information and customer activity, the involvement of two separate databases became a significant complicating factor.

In similar situations in the past, using earlier

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MySQL Sandbox supports latest MySQL releases, has more metadata and docs
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MySQL Sandbox has been updated again. The latest version is 3.0.38, which was just released. There were four releases in the space of one week, and this last one is just a polished edition.

Cherry-picking from the Change log:

  • Added option --bind_address to complement the effects of --remote_access;
  • The script 'enable_gtid' (for MySQL 5.6 +) now is durable. Previously the changes did not survive a restart.
  • Now you can install MariaDB with its bizarre version '10.0'
  • It also works well with MySQL 5.7. A bug prevented the creation of 'enable_gtid', but it is

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MEB : The journey so far 2010-2013
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MySQL Enterprise Backup (MEB) was born 3 years ago as a newly branded avatar of InnoDB Hot backup. Wanted to share what has gone on so far, how we at Oracle think about backup, the milestones that we have achieved and the road ahead. The idea for this blog came to me after looking at Mikael's latest blog. While Mikael talks about MySQL, I want to talk about MEB.

When we started with InnoDB Hot backup the first challenge was to have it adhere to the development, quality and release processes for MySQL. This meant creating a quality plan, getting it into the development trees of MySQL and ensuring that each piece of new code went through architecture and code review. Though the initial implementer and architect of Hot backup continues to work with the MEB team, there

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Exploring SAP HANA – Powering Next Generation Analytics
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SAP HANA , having entered the data 2.0/3.0 space at the right time, has been getting traction lately; and there will be lot of users like me who wants to[...]
2013 MySQL Conference and Expo — a #DBHangOps Review
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Hey everybody!

The Percona Live MySQL Conference and Expo just wrapped up last week and we’re looking to get some conference in review talk from everyone! Talk about your favorite sessions, new things you learned, and your overall opinion of the conference!

Hop online Wednesday at 12:00pm PDT (19:00 GMT) to join the discussion and share your experience from the 2013 Percona Live: MySQL Conference and Expo.

Be sure to watch this twitter search or this blog post get a link for the google hangout tomorrow!

Some talks that were specifically called out:

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SkySQL Merges With MariaDB Developers To Create ‘Next Generation Open Source’ Database Company
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SkySQL today announced that it has signed a merger agreement with Monty Program Ab, creators of the fastest growing open source database technology: MariaDB.  This merger reunites key members of the original MySQL AB developer and services teams. Their aim is to develop MariaDB into a truly interoperable, NewSQL open source database in collaboration with its customers, partners and the community. The company also pledges to further evolve its offering for users of the MySQL database.

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SkySQL Merges With MariaDB Developers To Create ‘Next Generation Open Source’ Database Company
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SkySQL today announced that it has signed a merger agreement with Monty Program Ab, creators of the fastest growing open source database technology: MariaDB.  This merger reunites key members of the original MySQL AB developer and services teams. Their aim is to develop MariaDB into a truly interoperable, NewSQL open source database in collaboration with its customers, partners and the community. The company also pledges to further evolve its offering for users of the MySQL database.

read more

Previous 30 Newer Entries Showing entries 31 to 60 of 591 Next 30 Older Entries

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