Performance, Scalability and Architecture

Andreas Grabner

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Top Stories by Andreas Grabner

An Oracle database provides several v$ views to query information about the database instance, including statistical information that can be used for monitoring and problem analysis purposes. Rene Nyffenegger wrote a nice Summary on Oracle’s v$ views that gives an overview of all available views. The following illustration shows a dashboard with key metrics that we pull out from an Oracle database when doing performance management with our clients: dynaTrace Dashboard showing key performance metrics queried from an Oracle Database via v$ tables In this article I provide a quick overview on what these metrics tell us and how to get them. If you run dynaTrace in your environment you can also download the [DL:Oracle Monitor Plugin] from our Community Portal . I also appreciate feedback from all Oracle experts out there. I am sure there are many more metrics that are i... (more)

JavaOne 2009 - Highlights Live from Day One

JavaOne 2009 officially started with the opening Keynote delivered by Jonathan Schwartz, CEO of Sun Microsystems. The keynote included several announcements and demos presented by partners and customers of Sun. Here are some highlights... Java Store to enable the java community to distribute their innovative Java solutions worldwide JavaFX 1.2 powered applications demonstrated on a consumer TV Intel and Sun collaboration to gain better performance of Java on Intel processors James Gosling - inventor of Java - giving a review of 14 years of Java Some words about Oracle and Sun by... (more)

Open Source Selenium Web Application Testing System

Selenium is a free Web Application Testing System. It gained lots of popularity since it is available. It’s integration to FireFox – which allows instant record/replay as well as the scripting option - makes it a great tool for functional web testing. BrowserMob on the other side leverages Selenium by providing an automated load-testing environment for Selenium scripts all configurable online via a Web Dashboard. Tagging Web Requests In my recent blog post – Get more out of functional web testing: How to correlate test reports with server side log information? – I discussed the ... (more)

Show Report: VMworld 2009 – Day Two

Tod Nielsen and Paul Maritz hosted the Keynote yesterday at VMworld 2009 speaking to 12.488 attendees. Maritz painted the history of virtualization and presented the idea of the Virtual Datacenter where VMware allows you to manage your virtual datacenter – regardless whether deployed internally on your own infrastructure or externally on the infrastructure of a Cloud [...] Related posts: Live from VMWorld 2009 – Day 1 The Moscone Center in San Francisco opened the gates for... Live from JavaOne – The Cloud Growing Up? I already listened to a couple of talks on the... Challenges of... (more)

How to Identify IE Add-Ons that Impact Web Site Performance

I occasionally get invited to do JavaScript/AJAX Performance Workshops. Last week I spent two days with a group of dynaTrace AJAX Users that work in a performance task force group within their R&D Organization. I asked them about the reasons for this Client-Side Performance Initiative. They told me the following story: One of our sales managers started to complain about several pages of the product we sell being too slow to demo therefore impacting his ability to pitch and sell the product. We analyzed the page in-house but couldn’t reproduce the same exact behavior. After some ... (more)