In Oracle Integration Cloud (OIC), a Global Fault Handler is a mechanism for handling errors and exceptions that occur at any point in your integration flow. It provides a way to define custom error handling logic at the global level, ensuring that specific actions are taken when unexpected errors or faults occur across your entire integration. Here’s how you can use Global Fault Handlers in OIC:

1. Create or Open an Integration:
   
   1. Log in to Oracle Integration Cloud.
   2. Create a new integration or open an existing one where you want to implement a Global Fault Handler.
2. Add a Global Fault Handler:
   
   1. Within your integration flow, navigate to the “Design” view.
   2. In the “Components” panel, expand “Error Handlers.”
   3. Drag and drop a “Global Fault Handler” onto the integration canvas. This will create a Global Fault Handler for the entire integration.
3. Configure the Global Fault Handler:
   
   1. Double-click the Global Fault Handler on the canvas to configure it.
   2. Define the error handling actions you want to perform when a fault occurs globally. Common actions include logging errors, sending notifications, and specifying retry behavior.
   3. You can also specify conditions for when the Global Fault Handler should trigger based on fault types, fault codes, or expressions.
4. Define Error Handling Logic:
   
   1. Inside the Global Fault Handler, you can specify the error handling logic that should be executed when a fault occurs. This can include actions like logging error details, sending email notifications, or transitioning to other integration flows.
5. Test Your Integration:
   
   1. Test your integration to ensure that the Global Fault Handler works as expected when errors occur anywhere in the integration flow.
6. Save and Activate the Integration:
   
   1. Save your changes and activate the integration to make it available for execution.

Global Fault Handlers are useful for handling unexpected or unhandled errors that may occur at any point in your integration. They allow you to define a centralized error handling strategy for your integration and ensure that specific actions are taken when errors occur globally.