Hello Wasim,

Minimum downtime can be achieved in a couple of ways, depending entirely on the specific requirements. If you're considering using logical replication to achieve this, the following article will definitely help you.

https://www.pgedge.com/blog/always-online-or-bust-zero-downtime-major-version-postgres-upgrades

Thanks & Regards
Zaid

On Wed, Jun 11, 2025 at 11:22 AM Wasim Devale <wasimd60@gmail.com> wrote:
Hi All

Please suggest me to upgrade postgresql: 400 GB data with minimal downtime apart from in place upgrade. We have it on red hat 9.

Thanks,
Wasim