HexaRocket now supports PostgreSQL to Oracle CDC (May, 2025)

Introduction

We are excited to announce a major enhancement to HexaRocket to include full support for PostgreSQL to Oracle CDC (Change Data Capture) replication.

With this release, organizations can now replicate changes in real-time from PostgreSQL back to Oracle, enabling bidirectional data movement, rollback capabilities, and continuous synchronization across heterogeneous systems.

This is another key milestone in HexaRocket’s mission to become the most complete, enterprise-grade database migration and replication platform across PostgreSQL, Oracle, SQL Server, MySQL, and more.

Why We Built PostgreSQL → Oracle CDC

Enterprises migrating to PostgreSQL often face one major requirement -

"What if we need to rollback after migration?"

A successful migration project must guarantee -

• Safety
• Reversibility
• Auditability
• Compliance with internal change-control processes

While many tools help move data to PostgreSQL, virtually none provide a secure way to flow data back to Oracle.

Organizations asked for -

• A rollback-safe migration workflow
• A way to keep Oracle updated while PostgreSQL becomes the new primary
• Continuous sync for a longer parallel-run period
• Zero-risk cutover with the option to revert if needed
• Real-time data movement across mixed environments

HexaRocket now delivers exactly that - PostgreSQL to Oracle CDC replication, making migrations safer than ever before.

Overview

HexaRocket’s latest release introduces a robust CDC pipeline enabling continuous replication from PostgreSQL → Oracle, supporting -

1. Real-Time Change Data Capture (CDC)

• Captures inserts, updates, and deletes directly from PostgreSQL WAL
• Efficient and scalable CDC extraction
• Guaranteed ordering and consistency
• Enterprise-grade data safety
• Includes validation of replicated data during CDC

2. High-Performance Apply Engine to Oracle

• Parallel apply workers for faster throughput
• Automatic conflict handling and retries
• Robust recovery and restart logic
• Zero dependency on Oracle GoldenGate or other replication tools

3. Rollback-Friendly Migration Workflows

This is the biggest benefit. With PostgreSQL → Oracle CDC, customers can -

• Run PostgreSQL as the new primary database
• Keep Oracle synchronized in real-time
• Maintain a “safe fallback option” during cutover
• Roll back to Oracle at any time with data fidelity
• Perform long parallel runs of both systems

This satisfies strict internal IT controls, compliance requirements, and deployment safety standards.

4. Full UI Controls for Operational Flexibility

• Pause / Resume CDC extraction
• Pause / Resume apply to Oracle
• Terminate and restart individual tables
• Reconfigure memory & parallel workers dynamically
• Live monitoring of lag, throughput, and events
  

Exactly the same user experience HexaRocket provides for Oracle → PostgreSQL CDC, now also available for PostgreSQL → Oracle.

Who This Is For

This release is designed for -

• Organizations running PostgreSQL in production but requiring Oracle as a synchronized fallback
• Teams executing large-scale migrations with rollback mandates
• Businesses running hybrid PostgreSQL + Oracle environments
• Enterprises needing real-time synchronization for reporting, analytics, or legacy app compatibility
• DBA teams requiring safe, reversible migration workflows

Whether you are midway through an Oracle-to-PostgreSQL migration, running both databases side-by-side, or preparing for a controlled cutover, this feature dramatically enhances safety, flexibility, and operational confidence.

Part of HexaRocket’s Broader Universal Migration Vision

With this release, HexaRocket now supports bidirectional CDC across PostgreSQL, and Oracle.

As of April 2025, our platform enables -

• Oracle → PostgreSQL (Schema, Data, CDC)
• PostgreSQL → Oracle (CDC)

And more connectors underway…

HexaRocket continues to unify Schema Migration, Data Migration, and CDC-based Online Replication into a single, intuitive platform, eliminating the need for multiple tools and manual processes.

Need Expert Help?

Along with HexaRocket licenses, HexaCluster provides -

• Database Migration Consulting (Oracle, SQL Server, PostgreSQL)
• Oracle compatibility engineering for PostgreSQL
• Performance tuning & PostgreSQL architecture
• Application migration & modernization services

For migration discussions, demos, or enterprise support, reach us at connect@hexacluster.ai