The code samples were tested in a cloud environment as well as in a local environment, which can be created using a virtual machine in VirtualBox using an Oracle Linux ISO image. Download Oracle VirtualBox 6.x and install it on a machine (Windows/macOS/Linux) with 16 GB RAM and a minimum of 100 GB HDD. Visit Chapter 4, Engage in Business Case on Blockchain Platform, in the Setting up OBP SDK section, for more details on installation steps.

You can download the example code files for this book from your account at www.packt.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packt.com.
2. Select the Support tab.
3. Click on Code Downloads.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Oracle-Blockchain-Quick-Start-Guide. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://static.packt-cdn.com/downloads/9781789804164_ColorImages.pdf

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Then, from your local web browser, just enter http://localhost:3000 and you should see the console's UI."

A block of code is set as follows:

#Create user Oracle
sudo useradd oracle
sudo passwd oracle
<newPassword>

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Click Sign In in the top-right corner."