Apache Spark for Oracle Developers

In the last few years, business problems that have been traditionally solved using databases are now being solved using other technologies. Apache Spark is one of the emerging technologies which is used for large scale data processing.

Attend the free webinar by Ivan Lokic and learn how you can use Apache Spark in Big Data applications.  


About the Webinar:
Apache Spark is a general computing engine designed for large-scale data processing. Many well-known companies (more...)

Getting Started with Pivotal Cloud Cache on Pivotal Cloud Foundry

Recently we announced the new cache service Pivotal Cloud Cache (PCC) for Pivotal Cloud Foundry (PCC). In short Pivotal Cloud Cache (PCC) is a opinionated, distributed, highly available, high speed key/value caching service. PCC can be easily horizontally scaled for capacity and performance.

In this post we will show how you would provision a service, login to the Pulse UI dashboard, connect using GFSH etc. I won't create a spring boot application to use the service (more...)

Pivotal Cloud Foundry Cloud Service Brokers for AWS, Azure and GCP

Pivotal Cloud Foundry (PCF) has various cloud service brokers for all the public clouds we support which include AWS, Azure and GCP. You can download and install those service brokers on premise or off premise giving you the capability to use Cloud services where it makes sense for your on premise or off premise cloud native applications.

https://network.pivotal.io/

The three cloud service brokers are as follows:





In the example below we have a (more...)

Manually running a BOSH errand for Pivotal Cloud Foundry on GCP

Pivotal Ops Manager has various errands in runs for different deployments within a PCF instance. These Errands can be switched off manually when installing new Tiles or upgrading the platform, in fact in PCF 1.10 the errands themselves will only run if they need to run making it a lot faster.

Below I am going to show you how you would manually run an Errand if you needed to on a PCF instance running (more...)

Oracle BPM: Time for Time Out (2)

In a previous blog posting I discussed a solution to re-initiate a scope in BPMN that is supposed to time out after some time. In this posting I discuss how that solution inspires a couple of other use cases where a time out has to be re-initiated by calling an operation on the process.

In the following process model there are three flow, for three different use cases to re-initiate the time-out of:

  1. A process (more...)

Oracle Weblogic: Tackling Class Loading Issues for SOA Infra

This blog article discusses how to address class loading issues with the Oracle SOA Infra. It's prime "raison d'etre" being a memory dump of something I don't do often, but may spend significant time in finding out how to do it again.

Some time ago I lost valuable time because some library being deployed twice, once in the wrong place ([SOA_HOME]/lib folder) and once in the right place ([SOA_HOME]/soa/modules/oracle.soa.ext_11.1.1). In this (more...)

Oracle BPM: Time for Time Out

In this posting I describe how to time out a specific BPM scope with the option to re-initiate the timer.

In case you need to model a time out for a specific scope within a process where you want to be able to modify the time out run-time, then you can model it similar to this:

A parallel flow is used where the top flow covers the main process, and the bottom flow handles the (more...)

Visual Studio Code editor support for Cloud Foundry Manifest files

An early BETA version of the Cloud Foundry (CF) manifest file support is available in Visual Studio Code. To see a video on this support follow the link below which shows how to install the extension and use Code Completion and a bit more follow link.

  https://www.youtube.com/watch?v=Ao6Mx6Q0XKE

With this extension for manifest files, it becomes a pleasure to write and modify those CF manifest files. You get content-assist, validations, and hover (more...)

Oracle BPM: Hiding Faults from BPM? Don’t use Service Activity!

In the following I explain how you can hide faults from BPM by not using (synchronous) Service activities, but (asynchronous) Send/Receive activities instead.

When calling services from a BPM process, you should think about where you want faults to show up and to be handled. This is specifically of interest when you have some integration layer between your BPM processes and external services that you call to abstract the external services from the BPM process. (more...)

dotnet publish – ASP.NET Core app deployed to Pivotal Cloud Foundry

I previously showed how to push a ASP .NET Core application to Pivotal Cloud Foundry by just using the source code files itself. It turns out this creates a rather large droplet and hence slows down the deployment. So here we are going to take the same demo and use "dotnet publish" to make this a lot faster. The previous post is here which is the base for this blog entry itself.

ASP. (more...)

Oracle BPM: Loops and Gateway Struggles

If there is one issue that I see people often struggle with, then it is the use of loops in combination with gateways. The following discusses a few cases.

The following picture shows several loops in combination with a Parallel gateway, of which some are valid and some not. The same holds for the Inclusive gateway.

To understand why some loops are valid and other not, you have to realize that at the beginning of (more...)

ASP.NET Core app deployed to Pivotal Cloud Foundry

This post will show you how to write your first ASP.NET Core application on macOS or Linux and push it to Pivotal Cloud Foundry without having to PUBLISH it for deployment.

Before getting started you will need the following

1. Download and install .NET Core
2. Visual Studio Code with the C# extension.
3. CF CLI installed https://github.com/cloudfoundry/cli

Steps

Note: Assumes your already logged into Pivotal Cloud Foundry and connected to Pivotal (more...)

Should you learn Spring or Oracle ADF?

My answer on Quora to “Should I learn Spring or Oracle ADF?”:

Oracle ADF is a specialty skill, Java Spring is a general skill. Java Spring should be your default choice, unless:

  1. You work in an company that has made Oracle ADF their strategic choice, or
  2. You come from a 4GL tool like Oracle Forms and don’t know much Java yet

With ADF, you get higher productivity but less control. It was created by (more...)

Best Way to Write SQL in Java


Many of us struggle writing SQL in Java. ORM tools such as Hibernate often generate SQL statements that result in poor application performance. Surely, there must be a better way to write SQL in Java.



Attend the free webinar by Java Champion Lukas Eder to learn the best way to write SQL in Java. Find out how you can use SQL as a type safe domain specific language in Java.

Sign up for the free webinar.

The "debugger" reserved word in JavaScript

This is a handy little tip for cases where you just can't get your debugger to start in the right context or the framework you are using doesn't give you a clear path to know when you file might be loaded. (For example ABCS, or Application Builder Cloud Service, that I am currently working on has this problem)

In this case just add the debugger statement in your javascript and voila when run in a (more...)

Best of Both Worlds with ADF

I’m seeing a lot of interest in developing client-side applications based on one JavaScript framework or another. Today, the leading contenders are AngularJS (the old version) and Angular2 (the new version, of course, incompatible with the old). Oracle is also entering the game with Oracle JET.

For some strange reason, developers tend to compare Javascript frameworks to full stack frameworks like ADF, forgetting that someone, somewhere, must build the REST web services that JavaScript applications (more...)

Run a Spring Cloud Task from Pivotal Cloud Foundry using Cloud Foundry Tasks

Recently we announced Spring Cloud Task under the umbrella of Spring Cloud through the following blog entry.  In the post below I am going to show you how you would create a Cloud Foundry Task that can invoke this Spring Cloud Task itself.

Spring Cloud Task allows a user to develop and run short lived microservices using Spring Cloud and run them locally, in the cloud, even on Spring Cloud Data Flow. In this example (more...)

Oracle BPM 12c: Hide Implementation Details with the Refine Feature

Ever had a case with the Oracle BPM Suite where you wanted to create a BPMN model while hiding the details from the reader? Then the "refine" feature may be what you are looking for. Read on if you want to know more about this feature that has been added since 12c. I actually blogged about it before, but this time I want to also illustrate the impact it has on the flow trace.

(more...)

ASP .NET Core (CLR) on Pivotal Cloud Foundry

There are two ways to run .NET applications on Pivotal Cloud Foundry. In short it's as follows

  1. Windows 2012 R2 Stack (Windows 2016 coming soon)
  2. Linux Stack - ASP.NET Core CLR only

In the example below I am going to show how you would push a sample ASP.NET Core application using the default Linux stack. I am using run.pivotal.io or better knows as PWS (Pivotal Web Services) instance which only supports a (more...)

Spring Boot Actuator support added to Pivotal Web Services (PWS) Application Manager

Recently we added "Spring Boot Actuator support" to Pivotal Web Services (PWS) http://run.pivotal.io. If you want to try this out simply use the demo below which is all setup to verify how this works.

https://github.com/papicella/SpringBootPCFPas

Once pushed you will see a Spring Boot icon in the Application Manager UI showing the Actuator support as per below.