# How to Migrate from SQL Server to PostgreSQL HA for Dockerized Apps

DevFeed: [How to Migrate from SQL Server to PostgreSQL HA for Dockerized Apps](<https://devfeed.tech/articles/how-to-migrate-from-sql-server-to-postgresql-ha-for-dockerized-apps-19114.md>)

Original publisher: [Read original article](<https://severalnines.com/blog/how-to-migrate-from-sql-server-to-postgresql-ha-for-dockerized-apps/>)

Author: Jessie Baynas

Published: 2026-05-28T07:18:00Z

Content type: tutorial

Language: en

Sources: [SeveralNines](<https://devfeed.tech/sources/severalnines.md>)

Topics: [PostgreSQL](<https://devfeed.tech/topics/postgresql.md>), [sql-server](<https://devfeed.tech/topics/sql-server.md>), [migration](<https://devfeed.tech/topics/migration.md>), [Database Migration](<https://devfeed.tech/topics/database-migration.md>), [Replication](<https://devfeed.tech/topics/replication.md>), [Docker Compose](<https://devfeed.tech/topics/docker-compose.md>), [Architecture & Design](<https://devfeed.tech/topics/architecture-design.md>), [DevOps](<https://devfeed.tech/topics/devops.md>), [Monitoring](<https://devfeed.tech/topics/monitoring.md>)

Tags: [cloud-native](<https://devfeed.tech/tags/cloud-native.md>), [database-general](<https://devfeed.tech/tags/database-general.md>), [database-migration](<https://devfeed.tech/tags/database-migration.md>), [deployment](<https://devfeed.tech/tags/deployment.md>), [devops](<https://devfeed.tech/tags/devops.md>), [failover](<https://devfeed.tech/tags/failover.md>), [migration](<https://devfeed.tech/tags/migration.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [postgresql](<https://devfeed.tech/tags/postgresql.md>), [replication](<https://devfeed.tech/tags/replication.md>), [sql-server](<https://devfeed.tech/tags/sql-server.md>), [validation](<https://devfeed.tech/tags/validation.md>)

## AI overview

This tutorial explains how to migrate a database from Microsoft SQL Server to PostgreSQL for Dockerized applications. It separates schema migration with pgloader from bulk data export using BCP and import with PostgreSQL COPY, and describes a setup involving streaming replication and ClusterControl for deployment, monitoring, and failover.

## Source excerpt

For many organizations, migrating from Microsoft SQL Server to PostgreSQL is no longer only about reducing licensing costs. The transition is often part of a broader modernization initiative focused on improving flexibility, scalability, and operational efficiency. PostgreSQL has evolved into one of the most mature open-source database platforms available today. It is widely adopted across [...] The post How to Migrate from SQL Server to PostgreSQL HA for Dockerized Apps appeared first on Severalnines.