Today is my birthday! 🎂🍾

📣 I’m excited to announce the release of my personal project, ADG-Topology: a free, open-source tool to help you create RedoRoutes rules by drawing Oracle Active Data Guard topologies. This is not an official Oracle product: it’s available “AS IS” under the MIT license.

What is ADG-Topology?

ADG-Topology is a web application built with ReactFlow. It lets you easily design complex Active Data Guard diagrams, then automatically generates DGMGRL commands to create the corresponding RedoRoutes rules.

Key Features

• Draw topologies that include cascaded physical standbys, Far Sync, and ZDLRA
• Model different redo topologies for every possible primary
• Support alternate destinations
• Perform basic validation (see the GitHub repository for details)
• 100% browser-based: your data never leaves your computer
• Auto-generate RedoRoutes rules
• Export and import reusable JSON files

Try it out!

Get started at ludovicocaldara.net/adg-topology. There’s a direct link in my blog’s menu.
Want to build or customize it? Visit the GitHub repository for setup instructions and details on contributing.
I hope ADG-Topology makes your Active Data Guard projects easier and more efficient.

Happy diagramming!

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Ludovico

Principal Product Manager at Oracle

Ludovico is a member of the Oracle Database High Availability (HA), Scalability & Maximum Availability Architecture (MAA) Product Management team in Oracle. He focuses on Oracle Data Guard, Flashback technologies, and Cloud MAA.

Latest posts by Ludovico (see all)

• Announcing ADG-Topology - December 18, 2025
• Reinstate an Oracle Database after failover without Flashback logging enabled - December 16, 2025
• SHOW CONFIGURATION VERBOSE changes in 23.9 - August 14, 2025