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Displaying posts with tag: administration (reset)
MySQL Workbench 6.0: What’s New

With the first beta of MySQL Workbench 6.0 just released, we’ll go through the list of improvements we’ve made since 5.2.47

New Home Screen

The Home screen went through a renovation and now has a modernized look. As part of the SQL Editor and Administration GUI unification, there’s now a single list for MySQL connections. Recently opened model files and other major features are also accessible from it.

You can organize different connections into “folders” by right clicking on a connection and selecting “Move to Group…” in the context menu.

New server connections can be added by clicking the + button next to the MySQL Connections heading. By clicking the Configure Remote Management… button in the new connection setup dialog, you can add server management capabilities to the connection. As before, SSH access with “sudo” is needed for remote management.

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Summertime Percona MySQL training update

Now that June has arrived it is time to plan what you will do over the summer months. In addition to your summer vacation plans, give thought to MySQL training for you and your team.

Summer is the time to brush up on those critical skills needed to ensure all systems are ready for the holiday shopping season.

In addition to our revised courses, that I talked about in a previous post, we are also running our new Moving to MySQL 5.6 class. This class covers new features in MySQL 5.6, migration planning, and application verification. This class was designed with the experienced MySQL DBA in mind–so it is a fast paced 2-day course.

Percona has a packed summer MySQL training …

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MySQL Utilities: The New .frm Reader Utility

Have you ever wondered what was in those .frm files littered throughout your data directory? Better still, have you encountered a situation where your data is either missing (was deleted) or damaged and all you have is the .frm files but don't know the structure of the table? Well, wonder no more!

The MySQL Utilities Team is pleased to announce the newest utility - the .frm reader (mysqlfrm). This utility is designed to read .frm files and produce a facsimile of the CREATE statement for the table or view.

That's Impossible! How Can That Work?
It works by making a copy of the .frm file(s) and launching a new, read-only instance of your existing server. The server need not be running but you are required to provide an open port for the new instance with the --port option.

The utility will launch the cloned server without reading your configuration file (--no-defaults). The utility also makes some …

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Introducing MySQL Utilities release-1.3.0

The MySQL Utilities Team is pleased to announce a major advancement of MySQL Utilities. It is now available as a separate download!

That's right. If you want to use MySQL Utilities without installing MySQL Workbench, you can do that now.

The Utilities release-1.3.0 has been built for Windows Installer, RPM archive, and .tar/.zip. We have also made downloads for source only if you want to use Utilities to develop your own utilities or install the product in custom location. We plan to add other repositories in the future.

Is that it? Well, not quite. We have also included a new utility - the .frm Reader. See the blog, "New Utility: .frm Reader" for more information.

If you'd like to try out the new download, visit the MySQL Workbench download page:

http://dev.mysql.com/downloads/tools/utilities/

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Introducing MySQL Utilities release-1.2.1

The MySQL Utilities Team is pleased to announce our latest release, version 1.2.1. This release contains many quality improvements and enhancements to the HA and Replication utilities. The following lists some of the most significant improvements.

  • Improved transaction gathering algorithm for failover
    • Skips slaves that are already caught up
    • Ensures all transactions in the relay logs on the slaves are executed first
  • External scripts in mysqlfailover and mysqlrpladmin now receive the old and new master information
  • Improved demote master handling for switchover
  • Improved connection error handling
  • Quoting of tables and database names has been improved
  • Login-path feature now reads port and socket

The utilities team continues to focus on improving usability, making features easier to use, and …

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Customisable Graphs for MySQL Database Administration in AWS & Dev Release for On-premise Administration Console

2nd release of SkySQL™ Cloud Data Suite provides users with customisation capabilities for free cloud database deployments Update release: SkySQL™ Cloud Data Suite

SkySQL™ Cloud Data Suite is a collection of software components that provides a highly available database solution in a cloud environment based on MariaDB and 100% compatible with the MySQL database. It includes the following features:

  • An automatic configurator
  • An administrative console with ...
    • A graphical backup and recovery manager
    • The ability to deploy each instance securely within the user’s environment
    • Feature-rich, web-based query tools
    • An advanced monitoring tool
  • A full set of HA solutions (synchronous and asynchronous)

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mitigating the pain of mysql restarts

Every now and then you’ll have no choice but to restart the mysql server, whether it be for editing server variables, upgrading, etc.. When the server is restarted, among the operations performed, it commits all active transactions, it flushes all dirty pages (data in memory) to disk and on restart, the buffers are wiped and [...]

MySQL Cluster: Troubleshooting Error 157 / 4009 Cluster Failure


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 Failure’ is misleading.  The cluster may not really have failed, so there is no point trying to restart it before we know more.


So what does error 157 mean and what can we do about it?


By using perror we can get a hint what it means:


$ …

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How-To: Guide to Database Migration from Microsoft SQL Server using MySQL Workbench

MySQL Workbench 5.2.41 introduces a new Migration Wizard module. This module allows you to easily and quickly migrate databases from various RDBMS products to MySQL. In this initial version, migrations from Microsoft SQL Server are supported, but it should also be possible to migrate from most ODBC capable RDBMS as well, using its generic RDBMS support. Additionally, you can use it to perform MySQL to MySQL database copies, which can be used for tasks such as copying a database across servers or migrating data across different versions of MySQL.

So let’s get our hands dirty and run through the Migration Wizard in order to migrate a Microsoft SQL Server database to MySQL. In the rest of this post I assume that you have:

  • A running SQL Server instance in which you have proper access to the database you want to migrate. (I’ll call this database from now on the source database). I have a remote SQL Server 2000 instance …
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MySQL Utilities Frequently Asked Questions

Momentum for MySQL Utilities continues to build.  I hosted a webinar recently about MySQL Utilities (available on-demand from the link below), which generated a lot of interest and some good questions.

http://event.on24.com/eventRegistration/EventLobbyServlet?target=lobby.jsp&eventid=448952&sessionid=1&key=7E741ED049DFBF49D10C90A2B62E410F&eventuserid=63530507

With so many questions and ideas coming in I decided to create a blog of FAQs. I plan to add these to the MySQL documentation as well.  Keep your ideas and questions coming!

I hope you find these questions enlightening. I have grouped them for easier reading. You can find the MySQL Utilities documentation using the link below. 

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