- Mar 23, 2020 You will get this error when Oracle SQL Developer is started with a Java version other then 8 or 11 and/or not being the official Oracle Java version. Currently I am running Mac OS 10.15.3 Catalina.
- Jun 25, 2020 If SQL Developer cannot find Java on your machine, it will prompt you for the path for a JDK home. This only occurs the first time you launch SQL Developer. A valid Java Home on Windows will be similar to C: Program Files Java jdk1.8.0181.
Now that you have explored the basics, you are ready to see how you can make your app better with SQL Server. In this module we will show you a simple example of Columnstore Indexes and how they can improve data processing speeds. Columnstore Indexes can achieve up to 100x better performance on analytical workloads and up to 10x better data compression than traditional rowstore indexes.
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Step 3.1 Create a Java app to demonstrate Columnstore indexes
SQL Developer: Install and Configure for Mac SQL Developer can be used to create queries that can be used to retrieve data from the Data Warehouse. The preferred method for using SQL Developer is through the AppsToGo application. This method requires no configuration.
To showcase the capabilities of Columnstore indexes, let’s create a Java application that creates a sample database and a sample table with 5 million rows and then runs a simple query before and after adding a Columnstore index.
Change to your home directory. Create your Maven starter package. This will create the project directory with a basic Maven project and pom.xml file.
You should already have a file called pom.xml in your Maven project located at: ~/SqlServerColumnstoreSample
Open this file in your favorite text editor and replace the contents with the code below to add the Microsoft JDBC Driver for SQL Server to your Maven project and specify the version of Java to compile the project against.
Save and close the file.
Change directories into your newly created project.
You should already have a file called App.java in your Maven project located at: ~/SqlServerColumnstoreSample/src/main/java/com/sqlsamples/App.java
Open this file in your favorite text editor and replace the contents with the code below. Don’t forget to update the username and password with your own. Save and close the file.
Build the project and create a jar package using the following command:
Now run the application. You can remove the of “-q” in the command below to show info messages from Maven.
Congratulations! You just made your Java app faster using Columnstore Indexes!
macOS Big Sur takes the most advanced operating system in the world to a whole new level of power and beauty, making your apps look better than ever on an all-new interface. New widget features and the new widget gallery help you deliver more value to your users. Adding intelligence to your apps with machine learning is even simpler and more extensive with new tools, models, training capabilities, and APIs. You can create more powerful Mac versions of your iPad apps with Mac Catalyst. And you can now easily bring your extensions to Safari — and to the App Store.
All-new Interface
macOS Big Sur brings a new design that’s been finely tuned for the powerful features that make a Mac a Mac. Core features, such as the menu bar and Dock, take advantage of the large Mac display, with translucent backings and spacious pull-down menus. The new Control Center, designed just for Mac, provides quick access to controls while keeping the menu bar clutter-free. Notification Center puts recent notifications and powerful new widgets together in a single view for at-a-glance information as you work. And a streamlined new design for apps features full-height sidebars and integrated toolbar buttons.
Widgets
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Easily build widgets using the WidgetKit framework and the new widget API for SwiftUI. Widgets now come in multiple sizes, and users can visit the new widget gallery to search, preview sizes, and add them to Notification Center to access important details at a glance.
Safari Extensions
With support for the popular WebExtension API, it’s even easier to bring powerful extensions to Safari. Xcode 12 even includes a porting tool to streamline the process.
The new Extensions category on the Mac App Store showcases Safari extensions, with editorial spotlights and top charts to help users discover and download great extensions from the developer community.
Machine Learning
With macOS Big Sur, creating apps that leverage the power of machine learning is even easier and more extensive with additional tools in Core ML for model deployment, new models and training capabilities in Create ML, more APIs for vision and natural language, and improved resources for training on Mac and converting models to Core ML format.
Mac Catalyst
Create even more powerful Mac versions of your iPad apps. Apps built with Mac Catalyst now take on the new look of macOS Big Sur and help you better define the look and behavior of your apps. You can choose to turn off automatic scaling of iPad controls and layout, allowing you to precisely place every pixel on the screen. Provide full control of your app using just the keyboard, take advantage of the updated Photos picker, access more iOS frameworks, and more.
User privacy on the App Store.
Later this year, the Mac App Store will help users understand apps’ privacy practices. You’ll need to enter your privacy practice details into App Store Connect for display on your product page.
Tools and resources
Use Xcode 12 and these resources to build apps for macOS Big Sur.
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