Scheduling Function Execution in Oracle Cloud
Scheduling Functions in Oracle Cloud Infrastructure has arrived. In May 2024, the Resource Scheduler was announced. I tweeted (X-ed) at that time that I was a little disappointed that …
Author: Lucas Jellema
Zero Trust Packet Routing in Oracle Cloud: least privilege network in human understandable policies
ZPR (Zero-trust Packet Routing) is a new and free mechanism in Oracle Cloud Infrastructure to reduce the chances of unintended and potentially harmful network access. Normal network security hinges …
SQL in your browser — DuckDB Web Shell for purely local data analytics
I am excited about a number of things. First and foremost is DuckDB Web Shell — a web assembly implementation of DuckDB that you can run in your browser. …
Create and containerize an Angular + Node Application using Buildpacks
It is very easy to turn an application into a container image that you can publish, share and deploy using any container runtime, cloud service or Kubernetes (lookalike). The …
How I Used gh-pages to Deploy My Web Application to GitHub (and What I Learned About Accidentally Exposing Sensitive Data)
Deploying a Vue 3 application to GitHub Pages using the gh-pages npm package is a straightforward and powerful way to make your project live on the web. However, it’s …
Multi Row Edit with Vuetify Data Table
For the power end user, an editable data grid is frequently the most productive user interface for quickly editing data. I have been working with Vue 3 for some …
Custom Tag Editor component with Vuetify autocomplete
Tags are a useful and a little playful way to provide context for a record. I am building a simple application (using Vue 3 and Vuetify) where a group …
Semi-manual application integration
Application integration typically happens in the backend — on the server side- , through fully automated means using APIs, web services, adapters/connectors, integration technology (service bus, event broker, ..) …
Quickstart with VS Code, Python and Jupyter Notebook
I have worked with Jupyter Notebooks in the past – running a server and working with the notebook in my browser. Then I learned about the support in VS …
Creating the ManyMail Outlook Addin — on tricks and workarounds
Send Personalized Mails to a (large) number of Recipients using an Addin and a Browser Extension My main objective when I started dabbling in Outlook Addins was to create …
Anniversary Gift: Versatile Cross Device File Manager (10GB free storage)
As part of our 20 year AMIS blog anniversary celebration, I would like to present the OCI File Manager – a free tool that allows users to easily, on …
Introduction into Outlook Addin development
Outlook Addins are extensions to the Microsoft Outlook Client – both the desktop and the web client. Both are HTML/JavaScript applications – as are the addins. Addins are small …
OCI Object Storage File Manager
This article introduces a static Vue 3 web application that is used to navigate the files in an OCI Object Storage Bucket. To upload files to that bucket and …
Gitpod Workspace for Oracle Database Free 23ai–click and run, free and in 7 minutes
I am an enthusiastic user of Gitpod – a platform for ephemeral cloudbased workspaces. Click on a URL and a workspace is started for you (and for me). From …
Persistent, cross database and cross region pipe in Oracle Database 23ai
We know pipes in Oracle Database to be an in memory mechanism, ephemeral with loss of data when the database instance is stopped. With limitations on size of messages …
Multi-read Large Message Singleton Oracle Database Pipe– cache for shared context
Database Pipes have been around in Oracle Database since release 7. In memory, light weight, non-persistent, fast and a little low level. Somewhat brittle: the contents of a pipe …
How to run Management Jobs on Oracle Cloud Infrastructure–serverless, authenticated, fully managed
As part of the operations around Oracle Cloud Infrastructure, you may want to run periodic jobs. To make backups, clean up log files and other temporary assets, process a …
CORS support in API Gateway deployment– for API access from local host
Web browsers typically implement a “same-origin policy” to prevent code from making requests against a different origin to the one from which the code was served. The intention of …
Live HTTP access to JSON document with Oracle Database 23ai data set using Pre Authenticated Request URL
A very nice, powerful and potentially somewhat dangerous new feature in Oracle Database 23ai: Pre-Authenticated Request URLs for Read Only Data Access on Autonomous Database. In summary: with a …
Getting started with Oracle Database 23ai – in five minutes and for free
Yesterday I noticed an announcement of the latest Oracle Database release: 23ai. A long term support release – so one we will be able to use for many years. …
Memo-recorder app on persistent OCI backend
I have create a simple web application for recording short notes that I want to save for later processing. Each note consists of a timestamp and location, a label …
Post files to OCI Object Storage Bucket via API Gateway
In a previous article I discussed accessing a static web application (a Vue 3 application) stored on OCI Object Storage through API Gatyeway. In this article I used a …
Host a static Vue Web application on Oracle Cloud Infrastructure–for free
I have been working on a Vue 3 web application. It allows the user to upload photographs and it will display the locations where these photos were taken on …
Oracle Database 23c–some intriguing new features–dbms_pipe, Prometheus, pre-authenticated request URL, reset database session, Vector Search
This article is really just a quick draft to remind myself of some really interesting new Oracle Database features that I want to further investigate. Very succinctly: Pre Authenticated …
The cloud is temporarily full (well, this region anyway)
It is tempting to consider the cloud a limitless of resources that are always available to us to provision our services from. However, that is of course too simplistic. …
Analysis of the January 21 2024 Azure ARM outage
As reported by Microsoft: “Starting at 01:57 UTC on 21 January 2024, customers using Azure Resource Manager might experience errors when trying to access the Azure Portal, Azure Key …
When Azure could not be reached – Analysis of a global Public Cloud Outage
Microsoft provided valuable insight into the behind the scenes situation for a global network incident that happened about a year ago. In this article, I try to summarize my …
Make parts of audio track louder in MP4
Crank up volume on parts of the audio track in a video: I have an MP4 of an interview and one of the two people talking was not caught …
Quickly creating a geo map to illustrate an article–QGIS and Datawrapper (and the PDOK data sets)
Quickly creating a geo-map illustration for an article. Showing off PDOK as geo data source, QGIS as geo data inspector and editor and Datawrapper to create the actual map. …
Prepare custom map data with MapShaper and Present with DataWrapper
In this article I take a custom GeoJSON file that defines some 20 custom locations – the office locations for the Conclusion ecosystem – and process it in the …
PDOK Data Sets in QGIS using QGIS Plugin
PDOK – Publieke Data op Kaart – is a Dutch data service that offers 230+ geo data sets on many different aspects of the public space in The Netherlands. …
Adding GeoJSON features to a OpenStreetMap in Leaflet
Leaflet is a great JavaScript library for creating map visualizations in web applications. Leaflet is created with that specific purpose in mind. It caters for most of the things …
Using CartoDB and OpenStreetMap in QGIS
Using QGIS to gather, visualize, analyze, edit, process and export Geo Data is fun. I only discovered QGIS fairly recently. And now of course I see it popping up …
Simple Web Application–using D3 and SVG for fairly drawing the winners
Last month we organized an internal competition around The Advent of Code 2023. Some 70 colleagues participated, Six had completed all puzzles at New Year’s Eve Midnight – our …
Live Inspection of Detailed Railway Data in free QGIS viewer
In a recent investigation I stumbled on two valuable things: the free QGIS desktop tool that allows inspection, transformation and analysis of Geo data the ProRail ArcGIS Map Server …
Visualize Dutch Rail Tracks on Map– QGIS, GML, PDOK, D3 and more
My challenge: show Dutch rail tracks on a map. This challenge is composed of several steps: find a dataset that contains geographic data on Dutch railways convert that data …
Map Visualization of (office locations in) The Netherlands –using GeoJSON, D3 and SVG
The combination of GeoJSON data sets and the JavaScript d3.js for SVG visualizations is quite valuable for creating rich and interactive visualizations of data that is related to geography …
World Map Data Visualization with d3.js, GeoJSON and SVG–zooming and panning and dragging
In several recent articles on Data Visualization using a Thematic World Map with color shades assigned to countries based on their value for a specific property in a world …
Interactive Data Visualization in World Map–Zoom, Translate, Legend
In two earlier articles I have discussed how to create a data visualization through a world map showing countries colored in shades representing their value for a selected property. …
Presenting the World in Data using World Map Visualization
This article is a sequel to my introduction into World Map visualization (using d3, SVG and JavaScript). The previous article introduced the visualization of country specific data on a …