ADF Performance Tuning: Manage Your Fetched Data
In this blog I want to stress how important it is to manage the data that you fetch and load into your ADF application. I blogged on this subject …
Category: Software Development
ADF Performance Monitor – Major New Version 7.0
We are very happy to announce that a major new version 7.0 of the ADF Performance Monitor will be available from May 2018. There are many improvements and major …
A DBA’s first steps in Jenkins
My Customer wanted an automated way to refresh an application database to a known state, to be done by non-technical personnel. As a DBA I know a lot of …
Running Spring Boot in a Docker container on OpenJDK, Oracle JDK, Zulu on Alpine Linux, Oracle Linux, Ubuntu
Spring Boot is great for running inside a Docker container. Spring Boot applications ‘just run’. A Spring Boot application has an embedded servlet engine making it independent of application …
Application Container Cloud Service (ACCS): Using the Application Cache from a Spring Boot application
Spring Boot allows you to quickly develop microservices. Application Container Cloud Service (ACCS) allows you to easily host Spring Boot applications. Oracle provides an Application Cache based on Coherence …
ADF Performance Tuning: Avoid a Long Browser Load Time
It is not always easy to troubleshoot ADF performance problems – it is often complicated. Many parts needs to be measured, analyzed and considered. While looking for performance problems …
Java: How to fix Spring @Autowired annotation not working issues
Spring is a powerful framework, but it requires some skill to use efficiently. When I started working with Spring a while ago (actually Spring Boot to develop microservices) I …
Getting started with Spring Boot microservices. Why and how.
In order to quickly develop microservices, Spring Boot is a common choice. Why should I be interested in Spring Boot? In this blog post I’ll give you some reasons …
Handle HTTP PATCH request with Java Servlet
The Java Servlet specification does not include handling a PATCH request. That means that class javax.servlet.http.HttpServlet does not have a doPatch() method, unlike doGet, doPost, doPut etc. That does …
JSON manipulation in Java 9 JShell
In this article I will demonstrate how we can work with JSON based data – for analysis, exploration, cleansing and processing – in JShell, much like we do in …
Java 9 – First baby steps with Modules and jlink
In a recent article, I created an isolated Docker Container as Java 9 R&D environment: https://technology.amis.nl/2017/10/11/quick-and-clean-start-with-java-9-running-docker-container-in-virtualbox-vm-on-windows-10-courtesy-of-vagrant/. In this article, I will use that environment to take few small steps …
Quick and clean start with Java 9–running Docker container in VirtualBox VM on Windows 10 courtesy of Vagrant
The messages from JavaOne 2017 were loud and clear. Some of these: Java 9 is here, the OpenJDK has all previously exclusive commercial features from the Oracle (fka SUN) …
Oracle Mobile Cloud Service (MCS): Overview of integration options
Oracle Mobile Cloud Service has a lot of options which allows it to integrate with other services and systems. Since it runs JavaScript on Node.js for custom APIs, it …
Remove Deploy Target from JDeveloper
When you use JDeveloper and deploy a project from JDeveloper to a server, JDeveloper remembers this, so you can easily deploy to it again. You can do this by …
ETL using Oracle DBMS_HS_PASSTHROUGH and SQL Server
June 12, 2017
Oracle, Databases, DBA Oracle, ODA, Oracle 12, Performance and tuning, PL/SQL
No Comments
While I prefer a “loosely coupled architecture” for replication between Oracle and SQL Server, sometimes a direct (database) link cannot be avoided. By using DBMS_HS_PASSTHROUGH for data extraction the …
Smooth, easy, lightweight – Node.js and Express style REST API with Java SE
It is easy to be seduced by some of the attractive qualities of Node (aka Node.js) – the JavaScript technology that makes server side development fun again. Developing light …
Oracle Mobile Cloud Service (MCS): An introduction to API security: Basic Authentication and OAuth2
As an integration/backend developer, when starting a project using Mobile Cloud Service, it is important to have some understanding of what this MBaaS (Mobile Backend as a Service) has …
Development and Runtime Experiences with a Canonical Data Model Part I: Standards & Guidelines
Introduction In my previous blog I’ve explained what a Canonical Data Model (CDM) is and why you should use it. This blog is about how to do this. I …
Development and Runtime Experiences with a Canonical Data Model Part II: XML Namespace Standards
This blog is about XML namespace standards. Primary for using them in a Canonical Data Model (CDM), but also interesting for anyone who has to define XML data by …
Development and Runtime Experiences with a Canonical Data Model Part III: Dependency Management & Interface Tailoring
Introduction This blogpost is part III, the last part of a trilogy on how to create and use a Canonical Data Model (CDM). The first blogpost contains part I …
Change UUIDs in VirtualBox
If you are anything like me you will have multiple virtualboxes running on your system. Sometimes you might want to run a copy of a virtualbox for different purposes. …
Oracle Service Bus : Service Exploring via WebLogic Server MBeans with JMX
At a public sector organization in the Netherlands there was the need to make an inventory of the deployed OSB services in order to find out, the dependencies with …
Oracle Service Bus : disable / enable a proxy service via WebLogic Server MBeans with JMX
At a public sector organization in the Netherlands an OSB proxy service was (via JMS) reading messages from a WebLogic queue. These messages where then send to a back-end …
Apache Kafka Streams – Running Top-N Aggregation grouped by Dimension – from and to Kafka Topic
This article explains how to implement a streaming analytics application using Kafka Streams that performs a running Top N analysis on a Kafka Topic and produces the results to …
Getting Started with Kafka Streams – building a streaming analytics Java application against a Kafka Topic
Kafka Streams is a light weight Java library for creating advanced streaming applications on top of Apache Kafka Topics. Kafka Streams provides easy to use constructs that allow quick …
Workshop Apache Kafka – presentation and hands on labs for getting started
The AMIS SIG session on Apache Kafka (9th February 2017) took 25 participants by the hand on a tour of Apache Kafka. Through presentations, demonstrations and a hands-on workshop, …
Download all directly and indirectly required JAR files using Maven install dependency:copy-dependencies
My challenge is simple: I am creating a small Java application – single class with main method – that has many direct and indirect dependencies. In order to run …
WebLogic Server: Logging the SOAP action in the access.log
WebLogic Server allows you to customize your access.log. This can be very powerful if you want to monitor for example service response times in a tool like Splunk (see …
Loading a Git Repository in JDeveloper 12c
Does JDeveloper work well with Git is a question I get asked occasionally. Or the question is not even asked and the assumption is that somehow the combination of …
Oracle Mobile Cloud Service (MCS). Implementing custom APIs using JavaScript on Node.js
Oracle Mobile Cloud Service is a mobile backend as a service. MCS does its magic by providing a lot of features to make implementing mobile services easy such as …
Programmatically extract key and value from Windows registry using simple Dos command line statement
The Windows Registry can be inspected from a Dos (Command Prompt) command. The key and data element I was looking for is: Key Name: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\chrome.exe Data Name: Path …
WebLogic Server: Automate obtaining performance metrics from the DMS
Oracle provides the Dynamic Monitoring Service (DMS) as part of WebLogic Server which is extremely useful if you want to obtain aggregated data of an environment in case of …
Recursively replacing a string in file and directory names and in text files on Windows – PowerShell to the rescue
A simple enough requirement: we want to create a template project, a set of directories and files that we can use as a starting point for a new type …
One of the many nice new features in 12c database: code based access control
September 5, 2016
Cyber Security, Databases, Deployment, Oracle, Oracle 12, PL/SQL, Software Development, SQL
1 Comment
![One of the many nice new features in 12c database: code based access control]({"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"http:\/\/seattletimes.nwsource.com\/ABPub\/2012\/08\/02\/2018836700.jpg","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"} "One of the many nice new features in 12c database: code based access control")
Topic of this blog is a nice new feature in 12c, not the plsql package I built that’s using it. So here’s the story.. For one of our customers …
6 surprising things you can do with Google search
Next the normal Google search you can use this search box for a lot more things. This search box is often the first place where you type when you want …
Continuous Delivery and the Oracle database (II)
April 15, 2016
Technology, Agile Scrum, Continuous Delivery, Database, Deployment, Languages, Oracle, PL/SQL, Software Development
4 Comments
In the previous Blog I have described how to implement CD for an Oracle database by using migration scripts. In this Blog I will describe how to create migration …
Create an oracledb enabled Node.js application container
In my previous article, First setup of a connection from Node.js to an Oracle Database, I demonstrated how to make a connection to a remote database using Node.js and …
First setup of a connection from Node.js to an Oracle Database
In this article I will demonstrate how to make a connection to a remote Oracle database from Node.js running on linux 7. We will be using the node-oracledb module …
Running node-oracledb – the Oracle Database Driver for Node.js – in the Pre Built VM for Database Development
Node applications may want to have access to databases – similar to access to the file system, external APIs over HTTP and other resources. Just like Java applications use …
Doing performance measurements of an OSB Proxy Service by programmatically extracting performance metrics via the ServiceDomainMBean and presenting them as an image via a PowerPoint VBA module
This article explains how the process of doing performance measurements of an OSB Proxy Service and presenting them in a “performance analysis document” was partly automated. After running a …