Thursday Sep 18, 2014

MySQL Cluster - What You Need To Know

Written by Diana Gray, Principal Curriculum Product Manager, Oracle University

Did You Know?

MySQL Cluster automatically shards data across data nodes on separate hosts which means that your database performance scales naturally as you add more nodes.

Data nodes belong to node groups that replicate data internally so that if one data node fails, another data node carries on working with a copy of the failed node's data. This ensures high availability as well as scalability.

Data nodes can run on commodity hardware, and have very few requirements.

This means that it is possible to create large-scale clusters on relatively inexpensive computers, and it is simple to extend a running cluster by adding data nodes while the cluster is operational.

For example, in a simple cluster you can add a new data node to the cluster by copying a single binary to the new host and executing it with an option that refers to the cluster's management node. You can redistribute data among the new node groups with a single command, and from that point on the cluster automatically distributes data among all of the data nodes.

If your clustered database becomes too large to be contained in the memory of a single node group, you can add additional nodes (and therefore node groups).

MySQL Cluster distributes data between node groups, so that each node group contains a fraction of the overall database. This means that if you have four node groups in your cluster, each node group holds approximately one quarter of the cluster's data and responds to roughly one quarter of the cluster's row requests.

As your requirements grow (data or throughput), you can add more node groups to scale the database without making any changes to your existing applications.

You can back up the entire cluster's data on all data nodes with a single START BACKUP command issued on the management node. MySQL Cluster Manager makes it easy to start and stop an entire cluster.

You can reconfigure all data nodes in the cluster with a single command that not only changes the setting but also restarts each node in turn without bringing down the cluster.

To find out more about MySQL Cluster, take the new MySQL Cluster training course.

This MySQL Cluster training teaches you how to install and configure a real-time database cluster at the core of your application. Expert instructors will teach you how to design and maintain your clusters for high availability and scalability by using MySQL Cluster's open-source and enterprise components.

This 4-day training course is a must for those who want to learn about MySQL Cluster. You'll not only learn about the concepts and features; you'll also get extensive hands-on experience. You can follow this training course from your own desk via a Live Virtual Class or by attending class at an education center. 

Get more information about the MySQL curriculum

Friday Apr 19, 2013

Stand Out from the Crowd: Become an Oracle Solaris System Administrator

If you're like many people in the modern day workplace, you're looking for ways to grow your knowledge, challenge yourself, become a greater asset to your company, make yourself more marketable and improve your job satisfaction. Many people are looking for ways to stand out from the crowd by possessing a unique set of valuable skills that will warrant higher pay.

In the IT world, possessing Oracle Solaris System Administration skills can be that key differentiator to increase your earning potential.

Oracle Solaris System Administration Skills in High Demand

IT Managers often tell me that they have a hard time finding qualified Oracle Solaris System Administrators. These managers need people with a depth of knowledge to manage their infrastructure, but there aren’t enough highly qualified people to fill those roles. Since the most business critical operations are running on Oracle Solaris, it's important to employ people who are experts in administering those systems. Furthermore, these in demand technologists tend to be engaged in a more comprehensive part of the IT story within their businesses. And their advanced skills are rewarded with higher pay.

Oracle Solaris System Administrator Salary

Oracle Solaris System Administrators, on average, are on a substantially higher pay scale than other System Administration positions. They also tend to have a high job satisfaction rate. As the technologies available in Oracle Solaris continue to advance, their skills allow them to work on challenging projects that expand well beyond the common daily system administration tasks.

How to Become an Oracle Solaris System Administrator

Whether you're new to Solaris and want to work your way to become a senior level administrator, or you're an experienced System Administrator looking to move into Oracle Solaris, Oracle University offers courses to get you there. You can also invest in earning an Oracle Solaris System Administrator Certification to validate your skills and prove to employers you have the knowledge and skills they need.

If you're interested in exploring Oracle Solaris Training courses, the sooner you start, the more competitive you'll be in the job market.

Get a preview of offerings available in the Oracle Operating Systems curriculum video below.


VIEW VIDEO

Have questions about Oracle Solaris Training or Certification? The team at Oracle University would love to hear from you. Drop us a note in the feedback section below.

- John Hathaway, Principal Curriculum Product Manager

About

Oracle University is THE trusted provider of quality, expert Oracle training & certification. All training is delivered by our Elite global team of Oracle experts and made available in multiple learning formats for anytime, anywhere training. Delivery methods include:
- Traditional classroom,
- Live Virtual Class,
- Oracle Learning Streams,
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- Training On Demand.
For buying confidence all our training is backed by the unique 100% student satisfaction guarantee.

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