HexaRocket now supports Oracle to BigQuery migrations (September, 2025)

Introduction

We are thrilled to announce another major expansion of HexaRocket’s universal migration capabilities - full support for Oracle to BigQuery schema migration, data migration, and Batch-based CDC for replication of changes.

With this release, organizations can now move large-scale Oracle workloads into Google BigQuery with unprecedented speed, automation, and reliability, eliminating the need for delicate custom scripts, complex pipelines, or multi-step data staging processes.

HexaRocket continues its mission to simplify enterprise modernization by becoming the most comprehensive platform for cross-database migrations across Oracle, PostgreSQL, SQL Server, BigQuery, and more.

Why We Built Oracle → BigQuery Migration

As enterprises modernize analytics platforms, one challenge consistently stands out -

“How do we efficiently and reliably move large Oracle datasets into a cloud-native warehouse like BigQuery?”

Traditional approaches struggle with -

• Inefficient export/import jobs
• Manual schema mapping from Oracle to BigQuery
• Inconsistent datatype conversions
• Inefficient loading of BLOB/CLOB/LONG RAW columns
• Lack of parallelization for multi-terabyte datasets
• Complex ETL pipelines that break easily
• No unified workflow from schema → ingestion → replication → validation

Organizations have been asking us for -

• A single-click Oracle → BigQuery migration experience
• An automated schema & datatype translator
• High-throughput parallel loaders for columnar analytical tables
• Ability to handle billions of rows without staging failures
• A migration engine that just works without DATAPUMP, Oracle Golden Gate, or custom ETL.

HexaRocket now delivers all of this in a seamless, optimized, and cloud-aware pipeline.

Overview

The September 2025 release introduces end-to-end Oracle → BigQuery migration capabilities, including:

1. Automated Schema Conversion for BigQuery

HexaRocket now automatically generates BigQuery-compatible schema from Oracle metadata -

• Tables, views, materialized views
• Columnar-optimized types for analytical workloads
• Conversion of NUMBER, RAW, DATE, TIMESTAMP, CLOB, BLOB, INTERVAL and other complex types
• Automatic translation of constraints and default expressions
• Standardization of naming conventions and reserved keywords

HexaRocket ensures the migrated schema is BigQuery-native and performance-optimized.

2. High-Throughput Data Migration

The new data migration engine supports -

• Parallel, chunk-based Oracle extraction
• Direct streaming ingestion into BigQuery
• Optimized uploads using BigQuery Storage Write API
• Compression-aware transfer for large datasets
• Robust resume/retry logic for long-running jobs

For datasets ranging from hundreds of GB to tens of TB, HexaRocket delivers predictable, high-speed throughput.

It also includes specialized handling for -

• CLOB / NCLOB
• BLOB
• LONG / LONG RAW
• Nested or semi-structured data patterns

3. Batch-based CDC Pipeline with Monitoring & Validation

HexaRocket provides end-to-end Batch-based replication with complete visibility.

• Continuously replicate changes from Batch-based CDC from Oracle to BigQuery.
• Ability to define the integer or timestamp based columns for scheduling delta data migration.
• Automatic handling of delta data copy based on the defined schedule and the high water mark based on the last applied batch.
• Error analysis with auto-recovery recommendations
• Real-time status monitoring for all tables and replication pipelines

No separate monitoring or ETL orchestrator is needed.

4. Zero-Code Operational Control

The UI provides -

• Table-by-table or full-schema migrations
• Pause/resume of extraction and loading
• Per-table worker tuning
• Schema edit previews before deployment

HexaRocket abstracts away complexity, giving teams complete control without writing a single script.

Who This Is For

This release is built for -

• Enterprises moving analytics from Oracle to BigQuery
• Organizations eliminating Oracle licensing costs
• Teams running large-scale DW/BI modernization projects
• Companies consolidating disparate Oracle systems into BigQuery
• Cloud-first and hybrid-cloud transformation programs
• Data engineering teams looking for automation and reliability

Whether the goal is analytical modernization, data warehousing, reporting offload, or full cloud migration, HexaRocket now offers a powerful end-to-end Oracle → BigQuery workflow.

Part of HexaRocket’s Expanding Universal Migration Vision

As of September 2025, HexaRocket supports -

• Oracle → PostgreSQL (Schema & Data, CDC)
• PostgreSQL → Oracle (Schema & Data Migration, CDC)
• Oracle → Oracle (Data Migration and CDC)
• SQL Server → PostgreSQL (Schema & Data Migration, CDC)
• Oracle → BigQuery (Schema & Data Migration, Batch-based CDC (ETL))

Upcoming connectors include -

• MySQL → PostgreSQL
• MariaDB → PostgreSQL
• PostgreSQL → BigQuery
• SQL Server → BigQuery
• PostgreSQL → SQL Server

HexaRocket is evolving into a universal data mobility platform, unifying schema translation, bulk migration, real-time CDC, and cloud ingestion pipelines under one roof.

Need Expert Help?

Alongside HexaRocket, HexaCluster offers -

• Database migration consulting
• Application Migration and Modernization
• PostgreSQL performance tuning & DBA support
• Architecture, HA, and cloud adoption advisory
• Managed database services

For enterprise demos, evaluations, or pricing: connect@hexacluster.ai