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Context It is a well known best practice to execute threads with the help of ExecutorService. This way, one can create a pool of reusable threads to execute the work that needs to be done in separate threads. For example, if we want to create an executor that executes only one thread at a time,

There are plenty of resources explaining how to configure data source in Spring Boot using various options and various ways to retrieve the configuration details of the connections (from external file, from application.properties, hard-coded, etc). On the other hand, if you already have a data source configured and at runtime you want to change the

Maven is all about connectivity. It allows you to quickly specify a dependency in the pom.xml file and forget about it. Maven will handle it for you. It will download it when necessary. If the dependency is already downloaded, it only connects to the remote repository for synchronization purposes. However, in some cases you need

The simplest way to configure logging in your Spring Boot application is to modify or add some entries in application.properties file. So for our case of setting the location where the log files will be written and the log level, this can be achieved by the following two configuration properties logging.file=/home/bogdan/cool_app/logs/output.log logging.level.root=info This is all

As a Developer & Architect, I’ve never been a huge fan of Powerpoint or Keynote. My use cases, like showing & executing code, visualize with e.g. d3.js usually are not so fun with the both of the tools. When I did trainings showing code, where the code was updated regularly, I invested more time into

This is a step-by-step guide on how to make CLOB columns accessible in Dashboards and Answers in OBIEE 12c. The guide is based on a sample dataset (including a clob column), which is stored in an Oracle Database 12.1.0.2.0 EE. Follow these steps and you will be successful in reporting on CLOB columns in OBIEE

Redux Another approach to holding and managing data is centralized state management with Redux. Redux helps us to avoid data inconsistency within our application and to make state changes transparent and traceable. The state of the application is stored in an unchangeable Store. State changes can be ordered via Actions. The Reducer processes the Actions

Resolver – load simple data The resolver loads data when a route is opened. The route parameters can be used. For the route \product\42, a resolver can load the product details with ID 42. The resolver ensures that all dynamic data is available when the component is initialized. We looked at resolvers in episode 15

  1 Create & configure java key stores (JSKs) 1.1 Create server & client jks files Oracle Docs: 7.2.2.1 Generating Private Keys and Creating the Java Keystore 1) Go to the domain_home/config/fmwconfig directory, where domain_home is the name and location of the domain for which the keystore is to be used 2) Enter a keytool

Single page applications require routing and navigation in a different way than the traditional web applications. The SPA applications will update URL to reflect the application state at a given time and update the browser history. In Oracle JET we have the mechanism to do the routing through oj.Router but it gets a bit complicated

There are 3 motivations behind this article, as a consultant or software developer I have projects in different APEX versions and one issue that I have is that I don’t have enough space on my laptop for all virtual machines, so I start using externa hard disks and always switching between them. Second motivation is

Starting with Oracle APEX version 5.1.4(after this Oracle changed the versioning numbers to 18.1) we have a new feature for the authentication which is called Social Sign-In, basically allows an OpenID or OAuth2 provider to act as authentication provider. Authentication is the process of establishing each user’s identify before they can access your application. In