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Best 6 Postgres Database Migration Tools For 2026

Compare 6 Postgres migration tools for moving off Oracle, MySQL, or SQL Server, with notes on schema conversion, downtime, and validation.

March 31, 2026

Last updated October 9, 2026

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TL;DR

Short answer: the tool is decided by where the data is now, not by feature lists. Moving off Oracle means Ora2Pg. Keeping MySQL in sync with Postgres means pg_chameleon. A one-off bulk load from files means pgloader. If the sources include SaaS apps as well as databases, or the migration is really the start of an ongoing pipeline, use Airbyte or Stitch. All six:

Airbyte: 700+ connectors into Postgres from databases and SaaS apps, with CDC to keep them in sync afterwards.
Ora2Pg: the standard route off Oracle. Converts schema, PL/SQL and constraints, and estimates the effort first.
pgloader: fastest path for one-off bulk loads from CSV, fixed-width files and other engines.
Stitch: hosted no-code loading into Postgres, 140+ connectors, now being folded into Qlik Talend Cloud.
Aiven: open-source aiven-db-migrate paired with Aiven's commercial managed Postgres service.
pg_chameleon: MySQL to Postgres replication via the binlog, though releases have been infrequent since 2023.

Postgres migration tools move data out of legacy systems and other database engines into PostgreSQL without hand-writing conversion scripts. Plenty of organisations still hold data in outdated systems, and the schema, type and encoding differences are where migrations quietly go wrong. The six tools below cover conversion, bulk loading and ongoing replication.

One of the popular database migration destinations is Postgres. To move large chunks of data into Postgres, you require efficient solutions. This article will delve into the popular Postgres database migration tools that will help you make the transition swiftly and securely.

What is Postgres?

The POSTGRES project began at the University of California, Berkeley, in 1986, and today, PostgreSQL is well-known as a robust open-source object-relational database system. It is renowned for its versatility in handling complex data workloads while ensuring you get the utmost data integrity.

The solid architecture and extensive feature set make Postgres a popular database among business organizations. You will find a dedicated open-source community committed to continuously enhancing the platform’s performance and innovation. Given Postgres’s reliability and ability to adapt to diverse business needs, you can migrate your vast datasets here and get access to powerful and scalable solutions.

Why migrate data to Postgres?

Although several types of databases are available, Postgres is still widely adopted by several organizations. Take a look at some of the reasons why you should strongly consider moving data into this database solution:

Extensibility: With Postgres, you can define custom data types, create your own functions, and seamlessly integrate code from various programming languages without requiring database recompilation.
SQL Standard Compliance: Postgres prioritizes compatibility with SQL Standards and currently adheres to a significant portion of the SQL:2023 Core standard.
ACID Compliance: ACID stands for Atomicity, Consistency, Isolation, and Durability. This standard is critical for maintaining data integrity and transaction reliability in structured data environments. Postgres has been ACID compliant since 2001, providing you with data security and stability at all times.
Comprehensive Feature Set: Postgres has a vast array of data features and configuration options. One notable feature includes Full Text Search, where you get advanced search capabilities and matching options on textual data. PostGIS, a geospatial database extender, is another well-known feature.
Extensions and Applications: The Postgres community extensively participates in improving the platform’s functionalities. It has resulted in the creation of high-quality extensions and applications that augment the core Postgres software by catering to diverse use cases.

Related reading: Top Data Migration Tools

Which Postgres migration tools should you use?

Now that you are aware of what Postgres has to offer, you will want to know how you can migrate your data there. A few tools offer secure and efficient data pipelines to help you with Postgres database migration. Take a look at some of the top platforms:

Tool	Best source	One-off or ongoing	Converts schema	Interface	Cost
Airbyte	Databases and SaaS applications	Both, with CDC for ongoing sync	Yes, with schema change detection	UI, API, Terraform, Python	Free self-hosted, capacity-based Cloud
Ora2Pg	Oracle, also MySQL	One-off migration	Yes, including PL/SQL to PL/pgSQL	Perl command line	Free, GPL
pgloader	Files and other database engines	One-off bulk load	Yes, in the same command	Command line	Free, PostgreSQL Licence
Stitch	SaaS applications and databases	Ongoing, scheduled	Basic type conversion only	Hosted web UI	From about $100 per month
Aiven	Existing PostgreSQL instances	One-off, via logical replication	Schema dump and restore	CLI and web console	Tool free, Aiven service is paid
pg_chameleon	MySQL	Ongoing, reads the binlog	Yes, with basic DDL support	Python command line	Free, last release March 2023

Airbyte

Airbyte is an open-source data movement platform with a library of 700+ pre-built connectors, including a dedicated PostgreSQL destination connector. It is the broadest option here, and the only one that covers SaaS sources as well as databases.

One of the best features of Airbyte is that it allows you to extract data from multiple sources. You can set your destination as Postgres and directly consolidate all your datasets in a single data pipeline. However, if you need to configure a source that you cannot find in the connectors library, you can create a custom connector through the Connector Development Kit (CDK).

Moreover, Airbyte provides you with CDC capabilities, where each change made to your dataset gets captured. Thus, your Postgres database stays updated without additional effort, and you can use the comprehensive features to analyze and understand your data better.

Airbyte Core is free to self-host with no time limit, which is usually the right way to run a migration. Airbyte Cloud suits teams that would rather not run the infrastructure, with volume-based Standard and Plus plans, while the capacity-based Pro and Enterprise Flex plans add SSO, role-based access control and column hashing for regulated environments. Talk to sales for Pro and Enterprise Flex.

Streamline PostgreSQL replication and migration

Move data into and out of PostgreSQL with Airbyte's change data capture connectors, self-hosted or managed.

Try Airbyte Cloud free for 14 days or talk to our team.

Ora2Pg

Ora2Pg is the established tool for moving an Oracle database to PostgreSQL, and it also handles MySQL sources. It is a Perl command-line tool driven by a configuration file rather than a graphical interface, which suits it to scripted, repeatable migrations. Its distinguishing feature is that it converts not just the schema but the PL/SQL as well, turning packages, functions and triggers into PL/pgSQL.

Key Features:

Export Options: You can migrate your full database schema into Postgres. It includes tables, views, sequences, indexes with their unique, primary, and foreign keys, and constraints with Ora2Pg. You can also export predefined functions, triggers, procedures, range/list partitions, and subpartitions.
Migration Cost Assessment: To achieve a comprehensive assessment of migration costs, Ora2Pg thoroughly inspects database objects, stored procedures, and functions. The tool has a specialized content analysis mode to identify elements or PL/SQL code that may pose challenges during automatic conversions.

Pricing: Ora2Pg is open source under the GPL and free to use.

pgloader

pgloader is a command-line bulk loader released under the PostgreSQL Licence. It reads from files and from other database engines, and handles the data and the schema in a single command, which makes it the quickest route for a one-off load. It is a loader rather than a replication tool, so it does not keep the source and target in sync afterwards.

‍Key Features:

Versatile Data Loading: pgloader provides support for a variety of file-based formats, such as CSV, dBase files (db3), IBM IXF files, and fixed column formats. You can also directly download source files or archives via HTTP, as pgloader is compatible with zip, tar, and gzip file formats.
Batch Processing: This database migration tool utilizes the COPY streaming protocol to load data into Postgres. However, in the method, if there is a single error in one of the rows, your entire dataset will get rejected during migration. To mitigate the issue, pgloader divides your dataset into batches of 25,000 rows, allowing for isolated error handling and better memory management.

Pricing: pgloader is an open-source free tool.

Stitch

Stitch is a hosted extract-and-load platform with 140+ connectors and a pre-built PostgreSQL destination, so data can be loaded without writing code. It handles basic type conversion but has no real transformation layer, and unlike Airbyte it cannot be self-hosted.

Key Features:

Automatic Scaling: Stitch has a high-availability infrastructure that adheres to industry best practices of scaling and data pipeline performance. Thus, you can process a huge number of records each day and adjust your data volumes dynamically without workload management concerns.
Support Team: With Stitch, you get an experienced and responsive support team that you can dial whenever you need a resolution for errors or issues. Additionally, if you have an Enterprise account with them, you also get a dedicated account manager to optimize your data stack.

Pricing: three monthly plans, Standard, Advanced and Premium, at roughly $100, $1,250 and $2,500. Worth checking before you commit: Qlik acquired Stitch with Talend in 2023 and now publishes a migration path from Stitch to Qlik Talend Cloud, so the product is being consolidated rather than expanded.

Why Chance chose Airbyte

"We conducted a market study on Fivetran, Stitch and Airbyte and fell in love with Airbyte's vision and community. Using Airbyte gives you the freedom to self-host and do whatever you want with it." Arnaud Coutin, Growth Lead at Chance

Read the Chance story

Aiven

Aiven is a reliable data platform that offers the aiven-db-migrate tool, an open-source project on GitHub for Postgres database migration. The tool conducts a schema dump and migration to ensure schema compatibility with your database. The default migration method of this tool is logical replication, where the two databases remain synchronized until replication into Postgres is interrupted.

Key Features:

Command Line Interface Tool: Aiven's installable CLI, aiven-client, drives every service on the platform, so migrations can be scripted alongside provisioning the target database rather than handled as a separate manual step.
Logical replication by default: source and target stay synchronised until you choose to cut over, so the migration does not require an outage window. It only moves data into Aiven-managed Postgres, not into a database you host yourself.

Pricing: the aiven-db-migrate tool is open source and free, but Aiven itself is a commercial managed platform. You pay for the Aiven for PostgreSQL service you migrate into, on an hourly plan, with a free trial to start.

pg_chameleon

pg_chameleon is a MySQL to PostgreSQL replication tool written in Python. It reads row images from the MySQL binary log using the mysql-replication library, converts them to JSON, and a PL/pgSQL function replays them into Postgres. That makes it one of the few options here that keeps Postgres continuously in step with a live MySQL source rather than performing a single copy. Worth knowing: the last release was 2.0.19 in March 2023, and it is maintained by a single author, so treat it as stable rather than actively developed.

Key Features:

Schema Replication: pg_chameleon is capable of reading and replicating data from multiple MySQL schemas to your target database in Postgres. This feature works even when your source and target schemas are different names. However, if there are errors in your tables, they are automatically excluded during the replication.
Data type support: it handles enumerated and binary types, and offers basic DDL support through CREATE, ALTER TABLE, DROP, TRUNCATE and RENAME, so common schema changes on the MySQL side carry across rather than breaking the replica.

Pricing: pg_chameleon is a free tool that any organization can use.

Which Postgres migration tool should you pick?

There is no single best tool here, because the six do not overlap much. Ora2Pg is the only realistic option for Oracle, since it converts PL/SQL as well as schema. pgloader wins on one-off bulk loads and loses entirely if you need ongoing sync. pg_chameleon is the specialist for live MySQL replication, with the caveat that it is stable rather than actively developed. Stitch and Aiven both tie you to a hosted service. Airbyte is the one to pick when Postgres is a destination for many sources rather than the endpoint of a single migration, and when you want the pipeline to keep running after the cutover. Match the tool to the source system first, and the rest of the decision usually makes itself.

Best 6 Postgres Database Migration Tools For 2026

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