Javascript is the most popular programming language* and its usage has grown 25% in the past year**. It’s widely used and so it stands to reason that Oracle now released a brand new JavaScript toolkit called Oracle JET (JavaScript Extension Toolkit). Oracle says “Oracle JET is targeted at intermediate to […]
Web/Java
Knowledge Center Web and Java
10 tips for ADF Application (Module Pool) tuning
Performance tuning is one of the things that is often left behind during development. Project leaders and business owners seem to think it happens on its own or just push it to the background when the deadline comes close. Another thing that doesn’t help is that performance tuning for ADF […]
Troubleshooting ADF ViewObject Range Paging Issues
ADF BC ViewObjects provide a very valuable mechanism to page through large data sets so that a user can navigate to a specific page in the results. Range Paging fetches and caches only the current page of rows in the ViewObject row cache (at the cost of another query execution) […]
ADF Performance Tuning: Improve Your Oracle ADF App Response Time by as Much as 70 Percent
Performance needs to be ingrained in your application – it cannot be added in during the last stages of development. In this video I discuss how you can optimize the performance of your Oracle ADF Fusion application, diagnose and solve typical performance problems, and build an efficient, responsive, scalable ADF […]
Deploy Oracle ADF Essentials web application on Tomcat
Although deployment of Oracle ADF 11g web applications on Tomcat is not officially supported, we have successfully deployed several ADF 11g applications on Tomcat 6. In fact, once you know which adjustments need to be made, it is easy to deploy an ADF application on Tomcat. This post will show […]
ADF 12c: Adaptive applications through reusable bindings using 12c Dynamic components, runtime switching from ADF BC to a POJO data control v.v.
The UK Oracle User group (UKOUG) held their Tech13, technology conference 2013, in Manchester 2 weeks ago. Duncan Mills held an interesting presentation on “Adaptive Applications”. He explained how to create fully reusable applications. Applications that can be used for different datasources and database tables. Just select a data model […]
Exploring Data Visualization with an HTML 5 Canvas based Tag Cloud powered by JSON
Tag Clouds are an interesting way to present information. They very quickly convey an impression of the relative sizes of a substantial number of entities and they do so in an attractive, almost playful way. By making the tags clickable, tag cloud can also be used to quickly navigate or […]
JavaOne 2013: Java Mission Control
The convergence project between Oracle’s JVMs JRockit and Hotspot is making significant progress. Included in the latest Java 7 JDK update (‘7u40’) is a new powerful monitor tool: Java Mission Control (JMC). JMC is a production time tool that has its roots in the JRockit JVM tooling. It is located in the […]
14 augustus – gratis seminar Oracle ADF 12c, JDeveloper 12c en WebLogic 12c revealed
Dit is de zomer van de 12c-lanceringen. Na de database zijn sinds vorige week Oracle ADF 12c, Oracle JDeveloper 12c, en Oracle WebLogic 12c beschikbaar. Met zoveel nieuwe mogelijkheden dat AMIS op 14 augustus een gratis seminar organiseert waarin we de nieuwe versies introduceren, becommentariëren en vooral ook demonstreren. Maar […]
JDeveloper code templates
When you write a lot of code, no matter what sophisticated framework you use, there are pieces of code that you end up writing over and over again (especially when using Java). Writing logging code in Java is a good example. A common pattern is to initialize a static logger […]
ADF DVT Speed Date: Interactive Bubble Graph
Recently the ADF SIG at AMIS organized an ADF DVT Speed Date. During this speed date six AMIS consultants presented their favorite DVT Component. In a series of blogposts we share the knowledge and findings. In this post you get introduced to the ADF DVT bubble graph. I will also […]
AMIS vat Oracle OpenWorld samen in speciale whitepaper
Als sluitstuk van de jaarlijkse Oracle OpenWorld conferentie brengt AMIS een whitepaper uit. Een handzaam document waarin het volledige verhaal van Oracle OpenWorld 2012 is gebundeld. Een team van AMIS was tijdens de conferentie in oktober nadrukkelijk aanwezig; als sponsor, deelnemer, netwerker en spreker – en als aandachtig luisteraar en […]
Deploy ADF essentials app on Tomcat 6.x
Recently I gotinvolved in a project where the customer requirement was to deploy an ADF application on Apache Tomcat 6.x. This ADF application would be rolled out with ADF Essentials. Which OTN describes as following: “Oracle ADF Essentials is a free packaging of key technologies from the Oracle Application Development Framework […]
Kom kennismaken met AMIS en doe mee met uitdagende projecten
Hierbij nodigen we je uit om met ons kennis te komen maken. Ben jij een (junior) Oracle consultant die een stap verder wil maken? Wil je verder groeien en ontwikkelen tot principal consultant? AMIS geeft je de kans om die stap te zetten. Bij ons krijg je de ruimte om […]
JavaOne 2012: What’s new in Servlet3.1: An Overview
Session at JavaOne come in various shapes. Some are visionary, high level and future oriented. Others are detailed and discuss practical, sometimes very fine grained topics. One of the sessions I attended was somewhere in between: future oriented yet pretty concrete at the same time. It was probably my favorite […]
How to build an IM (XMPP) solution with Oracle APEX and Websockets
Using Kaazing Websocket Gateway and OpenFire Scenario: If you, for example, have a webshop and a webshop online support application for internal use, this solution will let the webshop customer call in some help by using IM. The support application will react on the customer call by opening the support application […]
Uitnodiging: Kom kennismaken met AMIS
Hierbij nodigen we je uit om met ons kennis te komen maken. Ben jij een (junior) Oracle consultant die een stap verder wil maken? Wil je verder groeien en ontwikkelen tot principal consultant? AMIS geeft je de kans om die stap te zetten. Bij ons krijg je de ruimte om […]
Oracle RDBMS 10GR1: solution to avoid character encoding in XML with UPDATEXML
On a recent project, I ran into a problem with an XML document, that had to be enclosed within another XML document, generated from a database query. The problem I ran into was the character encoding of the XMLElement function, which eventually was worked around with UPDATEXML. In this blog […]
EJB an MDB best practices on WebLogic Cluster
Recently I did an audit on a WebLogic 11g platform of one of our customers. There were many problems with the availability of their JAVA Applications. Some of the problems we’re platform related ( installation, configuration and infrastructure related) but a lot of them already existed in an earlier stage […]
WLST script to add DataSource and DBAdapter EIS Connection Factory
Creating a EIS ConnectionFactory in your Database Adapter can be done with the WebLogic Administration Console, but of course this is also “scriptable”. What I needed was a script that created a Data Source with EIS Connection factory bound to the specific datasource. First I created a properties file, let’s […]
WebLogic 12c: Use JPA in your Web Application
Where as in WebLogic 11g JPA was not support by default, in WebLogic 12c it is the default persistency provider.JPA 2.0 is part of JAVA EE 6. I was trying some new JAVA EE 6 features in WebLogic 12c, so here is a is a way to create a Web […]
Book Review: Oracle WebCenter 11g PS3 Administration Cookbook by Yannick Ongena
A few months back, in August, I received an electronic copy of the book: “Oracle WebCenter 11g PS3 Administration Cookbook” by Yannick Ongena (Packt Publishing, 2011). I promised you then you write a review on it and now I finally deliver on that promise. Main conclusion: if you want to […]
Some WebLogic Administration Essentialsbook reviews
Some people were asked to review my book, here are some links: Edwin Biemond http://www.amazon.com/Oracle-Weblogic-Server-11gR1-Administration/dp/1849683026/ref=sr_1_5?ie=UTF8&qid=1320912495&sr=8-5 Jurgen Kress https://weblogiccommunity.wordpress.com/2011/11/09/oracle-weblogic-server-11gr1-ps2-administration-essentials-book-and-ebook Markus Eisele http://blog.eisele.net/2011/11/review-oracle-weblogic-server-11gr1-ps2.html Frank Muntz http://t.co/ukq1SUx6
ADF 11g R2 : Using the ActiveRowKey property
In ADF 11g Release 2, the ADF Table component has a property called ‘ActiveRowKey’. According to documentation, this represents the row that is currently active on the client. In click-to-edit mode, the active row will be made editable and is brought into view (if not already visible). Upon initial display, […]
Screen scraping using Google Documents in a minute or less…
In a previous blog Lucas used JSoup to collect data from a web page. In this post I’ll show a declarative way to screen scrape data with the help of Google Documents. The following webpage http://www.databaseolympics.com/games/gamesyear.htm?g=26 contains the olympic data I would like to import Open a new Google spreadsheet […]
ADF 11g : Show PDF in a Popup
In one of my previous posts I showed how to use ADF popup components to display external content such as webpages like wikipedia in an inline frame. Based on this post a colleague of mine tried to display a PDF document. That didn’t work. In this post I explain how […]
Book review: JDeveloper 11g Handbook: A Guide to Fusion Web Development
In this blog I will share with you my experiences with the Oracle JDeveloper11g Handbook – A Guide to Oracle Fusion Web Development (McGraw-Hill, 2010) – written by Duncan Mills, Peter Koletzke and Avrom Roy-Faderman. It is the successor of their previous book, JDeveloper 10g for Forms & PL/SQL Developers. […]
How to call a webservice directly from Java (without webservice library)
In this blog I will show you how you can call a webservice programmatically in Java without using a webservice library like JAX-WS or Apache Axis. Normally you would use of course a webservice library, but in some cases this can be useful and quick; for example when you have […]
ODTUG KScope Preview 2011
Ook dit jaar, namelijk op dinsdag 14 Juni, organiseert AMIS de ODTUG Preview. Het jaarlijkse congres van de ODTUG, de Oracle Development Tools Users Group, vind dit jaar plaats in Longbeach, California van 26 tot en met 30 juni. Het is niet voor iedereen weggelegd om daar naar toe te […]
ADF 11g R2 : Skin Editor First Impressions
With JDeveloper 11gR2 the skineditor is finally there. I share my first impressions in this post. When you need a skin for your application in previous versions, some configuration was needed. With 11gR2 it is much easier.
ADF 11g : What is the Currently Active Taskflow in a Dynamic Region ?
There are use cases in which you need to determine what the currently active taskflow is. This looks like simple, but in fact it is not ! Let’s rephrase that : Depending on the context, it can be a pretty confusing task.
Getting started with your career (in Dutch)
Als bezoeker van deze blog ben je bezig met het maken van mooie oplossingen en nieuwe uitdagingen op technisch gebied. AMIS nodigt je uit om ons team te komen versterken. AMIS wil je op het gebied van Oracle en Java uitdagen de volgende stap in je carriëre nemen. AMIS merkt […]
Hands-on: Synchronize your database from a webservice with JAX-WS and ADF Business Components
This step-by-step starter hands-on provides an example how to make a JAX-WS webservice proxy in JDeveloper, and save retrieved data from this webservice in a batch-job to your own database with ADF Business Components. Duration: 60 minutes. For this hands-on example, imagine that your company wants to expand internationally and […]
ADF 11g : Adding a Keystroke Filter to an ADF Shuttle Component
Recently I had to implement a selectManyShuttle Component with a filter on it. Filtering a selectManyShuttle Component has been described many times so that is no rocket science. However, this implementation asked for a keystroke filter. The user enters a value, and the shuttle is filtered immediately. In this post […]
Oracle Diagnostics Logging (ODL) for application development
Logging is a very important aspect of application development as it offers run-time access to the behaviour and data of the application. It’s important for debugging purposes but also to investigate exception situations on production. The Java developer has a choice between logging frameworks but Log4J is probably the most […]
ADF 11g : Log Data Manipulation
Today I had a request to implement a generic logging mechanism for all changes of data (DML) in an ADF application. The log needs to be persisted in a database table. This application uses ADF-Business Components and an Oracle Database. My first idea was to use database triggers for all […]
ADF 11g : Drag’n Drop and Contextual Events
While going through my list of requirements for our AMIS re-usable ADF taskflow library, I ran into the following requirement: publish a contextual event on a Drag and Drop action. If you know contextual events, you immediately notice that there is no way to publish a contextual event from a […]
ADF 11g : Change a Viewobjects’ Query on the Fly
One of the requirements at my current project is to have one ADF table display data from different database tables. That is, depending on criteria entered by the user, the query behind the view object needs to change. All in all 12 different database tables are involved in this story. […]
ADF 11g : SelectOneRadio in Table Layout
Today at one of my customers I was asked the question if you can use a SelectOneRadio component in table layout. I know that the first thing they should have done is try Google to find a solution. As a matter of fact they did and found this blogpost by […]
Book Review: Quick Start Guide to Oracle Fusion Development
A couple of weeks ago yet another ADF book was released. This time it was Grant Ronald’s turn. He managed to write a “Quick Start Guide to Oracle Fusion Development”. I was somewhat worried because it is seemingly impossible to write a Quick Start Guide to Fusion Development. However after […]