Planet MySQL Planet MySQL: Meta Deutsch Español Français Italiano 日本語 Русский Português 中文
10 Newer Entries Showing entries 91 to 100 of 416 10 Older Entries

Displaying posts with tag: MySQL Cluster (reset)

MySQL Cluster Auto-Installer – labs release
Employee +3 Vote Up -0Vote Down

Deploying a well configured cluster has just got a lot easier! Oracle have released a new auto-installer/configurator for MySQL Cluster that makes the processes extremely simple while making sure that the cluster is well configured for your application. The installer is part of MySQL Cluster 7.3 and so is not yet GA but it can also be used on MySQL Cluster 7.2. A single command launches the web-based wizard which then steps you through configuring the cluster; to keep things even simpler, it will automatically detect the resources on your target machines and use these results together …

  [Read more...]
Tutorial: Getting Started with the NoSQL JavaScript / Node.js API for MySQL Cluster
Employee_Team +2 Vote Up -0Vote Down

Tutorial authored by Craig Russell and JD Duncan 

The MySQL Cluster team are working on a new NoSQL JavaScript connector for MySQL. The objectives are simplicity and high performance for JavaScript users:

- allows end-to-end JavaScript development, from the browser to the server and now to the world's most popular open source database

- native "NoSQL" access to the storage layer without going first through SQL transformations and parsing.

Node.js is a complete web platform built around JavaScript designed to deliver millions of client connections on commodity hardware. With the MySQL NoSQL Connector for JavaScript, …

  [Read more...]
MySQL Connect: What to Expect From the Wondrous Land of MySQL Cluster
Employee_Team +3 Vote Up -0Vote Down

The MySQL Connect conference is only a couple of weeks away, with MySQL engineers, support teams, consultants and community aces busy putting the final touches to their talks.

There will be many exciting new announcements and sharing of best practices at the conference, covering the range of MySQL technologies.

MySQL Cluster will a big part of this, so I wanted to share some key sessions for those of you who plan on attending, as well as some resources for those who are …

  [Read more...]
More GlassFish loadbalancing tips for Connector/J
Employee +1 Vote Up -0Vote Down

Almost two weeks ago, I encouraged GlassFish users who need load-balanced JDBC connections to MySQL Cluster (or master-master replicated MySQL Server) to set the loadBalanceValidateConnectionOnSwapServer property to true in order to help ensure the connection chosen at re-balance is still usable.  That advice triggered finding a bug (14563127) which will cause the following Exception message:

No operations allowed after connection closed. Connection closed after inability to pick valid new …
  [Read more...]
MySQL Cluster to InnoDB Replication Howto
+6 Vote Up -0Vote Down


In this blog post I will show you how to setup a replication from MySQL Cluster  (ndbcluster) to a regular MySQL Server (InnoDB). If you want to understand the concepts, check out part 7 of our free MySQL Cluster training.


First of all we start with a MySQL Cluster looking like this, and what we want to do is to setup replication server to the Reporting Server (InnoDB slave).






  [Read more...]
MySQL Cluster 7.2.8 Released
Employee +2 Vote Up -0Vote Down

The binary version for MySQL Cluster 7.2.8 has now been made available at http://www.mysql.com/downloads/cluster/ (GPL version) or https://support.oracle.com/ (commercial version).

A description of all of the changes (fixes) that have gone into MySQL Cluster 7.2.8 (compared to 7.2.7) is available from the 7.2.8 Change log.

Monty’s team announces the availability of MariaDB Galera Cluster!
+6 Vote Up -0Vote Down

We’re delighted to share the news that our friends at MariaDB today announced the availability of MariaDB Galera Cluster!

We’ve been talking a good bit about MariaDB in the past few months and it’s great to see the MariaDB & Codership partnership result in today’s announcement.

read more

Learn From MySQL Support Staff at MySQL Connect!
Employee +5 Vote Up -0Vote Down

Members of the MySQL Support Team wear a number of different hats here at Oracle.  Obviously, our top priority is to provide amazing technical support that makes customers rave.  We also have a team dedicated to processing bug reports from the MySQL Community.  Some of us are active bloggers or assist on mailing lists or forums, while others find other ways to contribute to the MySQL Community.  We …

  [Read more...]
Load-balanced JDBC Tip for GlassFish Deployments
Employee +3 Vote Up -0Vote Down

Having supported a number of successful load-balanced JDBC applications using MySQL Cluster and MySQL Connector/J over the years, I’ve found a few problems that are unique to specific Java app servers.  A recent customer inquiry reminded me of a GlassFish-specific issue, and the Connector/J connection property we introduced to help solve it.  I thought it might be useful to document this here for any GlassFish users looking to deploy a load-balanced JDBC application with MySQL (Cluster or multi-master replication).

If you’re entirely new to the load-balancing functionality in MySQL Connector/J, you may want to …

  [Read more...]
MySQL Cluster: Troubleshooting Error 157 / 4009 Cluster Failure
+1 Vote Up -0Vote Down


Suddenly your application starts throwing "error 157" and performance degrades or is non-existing. It is easy to panic then and try all sorts of actions to get past the problem. We have seen several users doing:

  • rolling restart
  • stop cluster / start cluster

because they also see this in the error logs:

120828 13:15:11 [Warning] NDB: Could not acquire global schema lock (4009)Cluster Failure


That is not a really a nice error message. To begin with, it is a WARNING when something is obviously wrong. IMHO, it should be CRITICAL. Secondly, the message ‘Cluster …


  [Read more...]
10 Newer Entries Showing entries 91 to 100 of 416 10 Older Entries

Planet MySQL © 1995, 2014, Oracle Corporation and/or its affiliates   Legal Policies | Your Privacy Rights | Terms of Use

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.