- 21 Nov, 2025
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Top Tools to Migrate From Oracle to PostgreSQL
Top Tools for Oracle to PostgreSQL Migration: A Complete Guide for DBAs
Migrating from Oracle to PostgreSQL has become a major trend as organizations aim to reduce licensing costs, adopt open-source technologies, and move toward cloud-native architectures. However, migration isn’t just export-import—it requires the right tools to handle schema conversion, data transfer, performance tuning, and ongoing synchronization.
To make this journey seamless, here are the top tools every DBA should know when migrating from Oracle to PostgreSQL.
1. Ora2Pg
Best for: Schema & data migration
Type: Open-source
Use Case: Converts Oracle schema objects (tables, indexes, triggers, views, packages) to PostgreSQL syntax.
Key Features:
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Converts PL/SQL to PL/pgSQL
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Migrates large datasets in chunks
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Generates reports on migration complexity
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Supports parallel migration
2. AWS Schema Conversion Tool (SCT)
Best for: Cloud migrations to Amazon RDS / Aurora PostgreSQL
Type: Free by AWS
Key Features:
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Automates schema and SQL object conversion
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Assessment reports for incompatible code
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Works with DMS for live replication
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Supports on-prem & cloud source databases
Ideal when Oracle is being migrated to AWS-managed PostgreSQL.
3. AWS Database Migration Service (DMS)
Best for: Continuous/online migration
Type: Cloud Service
While SCT converts schema, DMS handles data movement, including ongoing changes.
Key Features:
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Minimal downtime (CDC enabled)
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Supports full load + incremental replication
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Secure & scalable pipeline for large DBs
4. EDB Migration Toolkit
Best for: Enterprises using EnterpriseDB PostgreSQL
Type: Commercial + Community
Key Features:
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Direct migration from Oracle to EDB Postgres
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Support for data type mapping, LOB migration
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CLI-based automation
Great for those who need enhanced Oracle compatibility in PostgreSQL.
5. pg_loader
Best for: Bulk data loads
Type: Open-source
Key Features:
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Fast load processing using multi-threading
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Can load from Oracle over ODBC
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Automatic type mapping
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Supports direct migration without dump files
Ideal when performance is a priority.
6. DBConvert / DBSync
Best for: GUI-based migrations
Type: Paid
Key Features:
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Easy setup with UI
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Schema + data + DDL conversion
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Supports batch sync and incremental sync
Useful for teams that want migration without deep scripting.
7. Flyway / Liquibase (Post-Migration)
Best for: Schema versioning & DevOps pipelines
Not used to migrate data, but essential after migration for schema consistency and CI/CD.
Key Features:
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Version control for database changes
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DevOps-friendly migrations
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Works across multiple environments
Comparison Table
| Tool | Use Case | Licencing | Strength |
|---|---|---|---|
| Ora2Pg | Schema + Data Migration | Open Source | Best overall conversion tool |
| AWS SCT | Schema Analysis & Conversion | Free | Cloud-focused automation |
| AWS DMS | Live Data Migration | Paid | Minimal downtime |
| EDB Toolkit | Enterprise Migration | Commercial | Best for Oracle compatibility |
| pg_loader | Bulk Data Loading | Open Source | Highest performance |
| DBConvert | GUI-based tool | Paid | Simple & user-friendly |
Choosing the Right Tool
| Scenario | Recommended Tools |
|---|---|
| Migrating to AWS | AWS SCT + DMS |
| On-prem Oracle to Open-source PostgreSQL | Ora2Pg + pg_loader |
| Large production DB with live sync | DMS or DBConvert |
| Requires Oracle feature compatibility | EDB Migration Toolkit |
| Fast bulk load after export | pg_loader |
Final Thoughts
Migrating from Oracle to PostgreSQL is a strategic move for cost savings and flexibility—but the journey is successful only with proper tooling. Start with Ora2Pg for schema conversion, use pg_loader or DMS for data migration, and ensure post-migration consistency using Flyway or Liquibase.
With the right tools, you can achieve a smooth transition with minimal downtime and maximum efficiency.
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