Holiday Project, A DIY CNC Adventure

This past holiday break, I have mostly stayed in the garage – setting up a CNC machine and cutting all the things that I deemed cuttable by it.

Raymond is busy on CNC jobs

Owning a CNC machine has been on my list for a long time, it is just out of my price range for a high quality professional grade machine, or maybe not useful enough for a “toy” level DIY one. But every time I built (more...)

Property expansion under windows.

A little over a year ago I wrote an article about automatic scripted installation of the SOA and BPM QuickStarts. One thing I wanted to improve is to be able to dynamically expand properties in the response file. I already found out how to do that under Linux but most QuickStart installations are done under Windows. So how to 'how to replace properties in textfile in Windows'?

I found this StackOverflow question, (more...)

Recursion in XSLT

Yesterday I got involved in a question to handle a list of input documents where there is a start value and for every other element this start value has to be increased until an end value is reached.

In more advanced XSLT cases you may end up in a situations that aren't solvable using a for-each. Why not? Well, in the for-each you can't iteratively re-calculate a variable. Like a program language as Scala, XSLT (more...)

A good year for the Clouds

At last we stumbled into a new year. New rounds, new chances as we say in Dutch. I ended 2016 and start 2017 on a project that involved the implementation of several Oracle Cloud products, where I'm responsible for ICS and PCS. But I also did several on-premise projects. So from a current Integration/Process Cloud implementation what to think about Oracle's Cloud plans?

Last fall, one of my managers came home from a presentation where (more...)

Google Home Notifier

Working in an emerging technologies team has a lot of perks. One of them is to kick the tires of technologies that are about to become mainstream. It also has the somewhat fun privilege to gain interwebz bragging rights or the equivalent of the emblematic/annoying “first” comment that plagued the web forums just a few years ago.

Among my list of “first”* (afaik) are the following:

Note to myself: when handling large payloads

Today I stumbled on a question in the communities about handling large payloads in BPEL/XSLT. Although I know that SOASuite from 11g onwards can do paging of XML to disk, I never had the need. However, you could need it from time to time. And it's good to know how to do it.

It's noted on My Oracle Support with Doc ID 1327970.1. Which refers to the 11g documentation on Managing Large Documents and (more...)

XMind 8 is published

Already several years I´m a user of XMind. It is a very rich free MindMapping tool. I find the free version very usefull.

Today I found out that the new XMind 8 is published. You can get it on xmind.net.

Enjoy.

OSB Thread handling recommendations

I have got questions on performance of OSB quite a few times already, during the years. A few years ago on a project I got eyes on a set of recommendations on workmanagers for OSB. Many developers know that for instance Service Call outs are blocking activities. And that you should use workmanagers to solve performance problems resulting from the use of those blocking activities.

If you do nothing on dispatch policies in OSB proxy (more...)

Get the hostname of the executing server in BPEL

This week I got involved in a question on the Oracle Forums on getting the hostname of the server executing the bpel process. In itself this is not possible in BPEL. Also if you have a long running async process, the process gets dehydrated at several points (at a receive, wait, etc.). After an incoming signal, another server could process it further. You can't be sure that one server will process it to the (more...)

Weblogic 11g to 12c: strictness in listen address

Let's say you have a virtual machine with two network adapters, both set on 'HostOnly'.
I used to do that and set the first one of those to a fixed IP address, say 10.0.0.1. To this one I coupled the hostname, for instance darlin-vce-db, using the /etc/hosts file. That way I had a fixed, always existing network address for the database.

Together with the database, you install WebLogic, for instance to serve (more...)

OTN Appreciation Day: – the day after – BPEL, SOASuite and SCA (in that order…)

Unfortunately I noticed this nice initiative only yesterday: OTN Appreciation Day. I did not had a change to cook something up, but I do like to add some mustard after the meal, as we say in Dutch.

In the titles I miss BPEL. In 2004,when Oracle acquired Collaxa, I worked at Oracle Consulting in the Netherlands. Was working with Oracle Workflow and Interconnect. Oracle wasn't yet into SOA really. But with BPEL PM they acquired (more...)

Are analytic RDBMS and data warehouse appliances obsolete?

I used to spend most of my time — blogging and consulting alike — on data warehouse appliances and analytic DBMS. Now I’m barely involved with them. The most obvious reason is that there have been drastic changes in industry structure:

Notes on vendor lock-in

Vendor lock-in is an important subject. Everybody knows that. But few of us realize just how complicated the subject is, nor how riddled it is with paradoxes. Truth be told, I wasn’t fully aware either. But when I set out to write this post, I found that it just kept growing longer.

1. The most basic form of lock-in is:

  • You do application development for a target set of platform technologies.
  • Your applications can’t run (more...)

Oracle as the new IBM — has a long decline started?

When I find myself making the same observation fairly frequently, that’s a good impetus to write a post based on it. And so this post is based on the thought that there are many analogies between:

  • Oracle and the Oracle DBMS.
  • IBM and the IBM mainframe.

And when you look at things that way, Oracle seems to be swimming against the tide.

Drilling down, there are basically three things that can seriously threaten Oracle’s market (more...)

The Infogram is Moving!

See us at our new site: Oracle Priority Support Infogram.

Readings in Database Systems

Mike Stonebraker and Larry Ellison have numerous things in common. If nothing else:

  • They’re both titanic figures in the database industry.
  • They both gave me testimonials on the home page of my business website.
  • They both have been known to use the present tense when the future tense would be more accurate. :)

I mention the latter because there’s a new edition of Readings in Database Systems, aka the Red Book, available online, courtesy of (more...)

Transitioning to the cloud(s)

There’s a lot of talk these days about transitioning to the cloud, by IT customers and vendors alike. Of course, I have thoughts on the subject, some of which are below.

1. The economies of scale of not running your own data centers are real. That’s the kind of non-core activity almost all enterprises should outsource. Of course, those considerations taken alone argue equally for true cloud, co-location or SaaS (Software as a Service).

2. (more...)

Oracle Priority Support Infogram for 25-NOV-2015 1000th posting!


This marks the 1000th post to the Infogram. I am awarding myself a low-carb lollipop.

Data Warehouse


Oracle VM

Oracle VM Performance and Tuning - Part 4, from Virtually All The Time.

Fusion

Changing Appearances: Give The Apps Your Corporate Look, from Fusion Applications Developer Relations.

SmartScan

Oracle Priority Support Infogram for 19-NOV-2015


OpenWorld

Some more recaps and reminiscences of OOW this week:

Database In-Memory OOW Recap, from the Oracle Database Insider Blog.

Oracle OpenWorld 2015 Highlights, from the SOA & BPM Partner Community Blog.


HA

Oracle Database Disaster Recovery on Public Cloud, from Oracle Partner Hub: ISV Migration Center Team.

Exalogic and Exadata


Oracle Priority Support Infogram for 12-NOV-2015


OpenWorld

Another OpenWorld is in the books, and now it’s time to absorb and pursue the material covered. Here’s a good place to get started: Continue Learning Post-Oracle OpenWorld

RDBMS


WLS

The complete guide to tuning the appearance of NetBeans, from WebLogic Partner Community EMEA.


Security

Security Alert CVE-2015-4852 (more...)