Most single-value functions in Oracle are pretty straightforward. This article gives short examples of the major functions, and it shows both the results of the functions and how they correspond to columns, rows, and lists. After the examples, you’ll learn how to combine these functions. A table named MATH was created to show the calculation effects […]
Read More
How can you master virtualization skills if you don’t know how to explain it to your grandmother? One can justifiably say that virtualization is a mature technology. It has formed the basis for Cloud computing, and it epitomizes the continuous service delivery and consumption model that beckons in the era of IT-as-a-Service (ITaaS). For the […]
Read More
Monitoring Java™ management extensions (JMX) may seem daunting, but they are completely necessary for application and network management. They connect to remote clients and monitor applications running inside a Java Virtual Machine (JVM). Monitoring JMX is all about the managed beans (MBeans), which are resources like applications or devices. MBeans provide configuration and resource utilization of […]
Read More
Virtualization management requires mastering a specific set of skills. But once mastered, these essential skills can lead to a long and meaningful career in IT. IT pros need a foundation in technologies. To extend utility to their organizations, they should further develop three essential skills – monitoring, troubleshooting, and reporting. Think back to your first responsibilities as an […]
Read More
The benefits of virtualization, especially high availability and consolidation, are well known. Virtualization is a primary reason why Cloud computing and distributed systems have gained traction beyond academia and very large enterprises. What do virtualization admins have to say about the top issues that they troubleshoot and remediate on a daily basis? Plus, how fast are […]
Read More
IT industry insiders John Troyer, Christopher Kusek, and Dennis Smith. Check. Defining hybrid Cloud, converged infrastructure, software-defined anything (SDx), and containers. Check. Helping you find your next career. Priceless. Technologies are fast and furious in their development, and they often displace each other. Knowing which technologies to learn and build experience with can be the difference between having a […]
Read More
Virtualization is supposed to provide consolidation and high availability benefits for applications. So what is a hypervisor? Why are there two types of hypervisors? What’s the difference between VMware® vSphere™ and Microsoft® Hyper-V®? What exactly are Type 1 and Type 2 hypervisors? What if I just want to learn about vSphere and Hyper-V so that I can compare […]
Read More
The speed and scale enabled by virtualization and Cloud require advances in the underlying infrastructure. Enter hyper-convergence. What is hyper-convergence? The convergence half refers to the combination of server, storage, network, and software in a single physical appliance. The hyper half refers to the fact that the solution is easy to implement and deploy. Join me and […]
Read More
MySQL® is one of the most popular relational database management systems being used today. Its popularity with SQL admins who manage data sets puts it at the back end of many tiered applications. But with great popularity comes great responsibility, especially for an IT admin who is new to monitoring and managing MySQL instances. This is a different […]
Read More
If you are an IT admin just getting started in server monitoring, this beginner’s guide is for you. This includes monitoring CPU, memory, and disk for performance bottlenecks that might affect application performance. In addition, hardware health events cover components that can fail most often in servers. Admins will need to understand how to monitor […]
Read More
Performance bottlenecks are the bane of admins. They negatively impact an application’s quality of service, and can lead to nights and weekends filled with troubleshooting and remediation. Add in a layer of virtualization and the bottlenecks usually bleed over into misconfigurations, such as co-stop issues in vSMP VMs when one vCPU is sufficient, or over-allocation of memory […]
Read More
One of the best things about being a DBA is that I am always learning. As a long time DBA (+25 years), who has worked with about every database type imaginable, I find that my latest challenge is to keep up with all the new features and functionality the latest versions have to offer. This […]
Read More