Oracle Scratchpad

June 18, 2013


Filed under: Delphix — Jonathan Lewis @ 11:23 am BST Jun 18,2013

If you’ve been keeping an eye on my Public Appearances page you’ll know that I am scheduled to go on line with Kyle Hailey for a second (more technical) discussion about Delphix and virtual databases on 19th June (tomorrow). If you haven’t registered, there’s still time to do so. It’s scheduled for 5:00 pm (BST), which makes it 9:00 am in San Francisco.

Update 1: Delphix have got 10 copies of Oracle Core to give away and they’ve decide to give one to every 10th registrant (until stocks run out) for the webinar.

Update 2: Over the last few days Kyle Hailey has been writing a short series comparing the commonest technologies currently available for Virtual Databases (or “Thin cloning”):

April 4, 2013

Delphix Overview

Filed under: Delphix — Jonathan Lewis @ 9:04 pm BST Apr 4,2013

Update: Here’s the link to the recording of the webinar

I’ll be online tomorrow morning (Friday 5th, 9:00 Pacific time, 5:00 pm UK) in a webinar with Kyle Hailey to talk about my first impressions of Delphix, so I thought I’d write up a few notes beforehand.

March 22, 2013

Delphix Debrief

Filed under: Delphix — Jonathan Lewis @ 7:24 am BST Mar 22,2013

I’ve had my week in Palo Alto with the Delphix people. I really don’t know where the time went to – but I had a lot of interesting conversations with a number of very able people; plenty of time to experiment; and I’ve even been able to install Delphix on my laptop (as a 64-bit Open Solaris 10 VM under VMWare). I liked the product, and I was impressed with the team they’ve got working on it.

We’ve pencilled in an intial online webinar for Friday 5th April which will probably feature an informal chat where Kyle Hailey and I talk about my impressions of the product and what I’ve done with it so far. Then, in about a month’s time, we’ll have a more technical discussion.

In the meantime, it occurred to me that my next blog post ought to be about LOBs as this would be a nice way to introduce you to one of the key ideas behind DxFS (the Delphix-extended file system that’s based on ZFS).

Update 22nd March

The link to register for the online conversation is now up. We’re timetabled for 5th April 9:00 am PDT (which is currently 4:00 pm GMT, but it will be 5:00 pm BST by then.)

March 9, 2013

Virtual DB

Filed under: Delphix — Jonathan Lewis @ 9:52 am BST Mar 9,2013

I’m heading off to Heathrow airport later on today to fly out to San Francisco for my week of  experimenting with Delphix. I’ve done a little preparation work, of course, including browsing around the Internet to read about related technologies. Some of the material I found was very interesting, so I thought I’d go publish a few of the links that might be useful to other people.

February 6, 2013


Filed under: Delphix — Jonathan Lewis @ 7:19 pm BST Feb 6,2013

If you’re a regular follower or my blog you may recall Kyle Hailey and the joint webinar we did nearly two years ago on “Visual SQL Tuning” covering an approach I’ve written about in the past and a product that he developed at Embarcadero to automate the work that I’d been doing by hand and eye.

Kyle has now moved on to Delphix, and has become involved with another really interesting piece of technology – database virtualization. How do you supply a terabyte sized database to five different development teams without using up 5TB of disc space ? Create an operating environment that keeps one master copy of the database while maintaining a set of (small) private files for each team that hold private copies of the blocks that have been changed by that team – and that’s just one feature of the product.

The product is sufficiently interesting (plus I have a healthy regard for Kyle’s opinions) that I’ve accepted an invitation to go over to California for a few days next month to experiment with it, see what it can do, try to stress it a bit and so on. The people at Delphix are so confident that I’ll be impressed that they’re going to let me do this and then write up a blog telling you how things went.

Have a browse around their documentation and if you’re interested add a suggestion to the comment telling me what you’d like me to test, and how, and I’ll see if I can fit it into my timetable (no promises – but if you come up with interesting ideas I’ll see what I can do).

The Rubric Theme Blog at


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