# Database Migration to new instance
**URL:** https://community.zammad.org/t/database-migration-to-new-instance/19048
**Category:** Technical assistance
**Created:** [November 6, 2025, 3:04pm UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048 "2025-11-06T15:04:42Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@Gogsy](https://community.zammad.org/u/Gogsy)
#### Post date: [November 6, 2025, 3:04pm UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048/1 "2025-11-06T15:04:42Z")
- Used Zammad version:
New Zammad: 6.5.2-1761942778.51909d1d.noble
Old Zammad: 6.6.0\_alpha Release: 1757682252.c2979390.centos9
- Used Zammad installation type: package
- Operating system:
New system: Ubuntu 24.04.3 LTS Noble
Old system: Rocky Linux 9.6 Blue Onyx
- Hello,
I have to migrate the database from old zammad to new zammad.
The issue is in versions… How can I downgrade from 6.6 to a stable version 6.5 of zammad on old server and migrate the database to a new server.
I have installed a new enviroment in 3 server architecture App server, Databse server and Elasticsearch server.
Everything is connected and working just the database is the problem now.
If you have experiance with this or tips on how to do it, please share.
Old server DB: RHEL Rocky
{adapter: “postgresql”, database: “zammad”, pool: 50, timeout: 5000, encoding: “utf8”,
New server DB: Ubuntu
{:adapter=\>“postgresql”, :database=\>“zammad”, :pool=\>50, :timeout=\>5000, :encoding=\>“utf8”,
---
### Author:  [@MrGeneration](https://community.zammad.org/u/MrGeneration)
#### Post date: [November 6, 2025, 3:22pm UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048/2 "2025-11-06T15:22:45Z")
You shoudln‘t downgrade Zammad-Versions. The best moment to do the switch from develop to stable is a release.
Is using develop on the new host no option…?
Apart from that, the migration process is available on [docs.zammad.org](http://docs.zammad.org).
---
### Author:  [@Gogsy](https://community.zammad.org/u/Gogsy)
#### Post date: [November 7, 2025, 10:46am UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048/3 "2025-11-07T10:46:09Z")
OK, thank you.
I will update both instances to the latest version of develop. And on next relese i will go to stable version.
In documentaion is there any info on how to change from develop to stable version?
---
### Author:  [@MrGeneration](https://community.zammad.org/u/MrGeneration)
#### Post date: [November 7, 2025, 10:48am UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048/4 "2025-11-07T10:48:48Z")
No but this will help you, sorry for the quality.
https://www.youtube.com/embed/qYckm_YkbaY?feature=oembed&wmode=opaque
---
### Author:  [@Gogsy](https://community.zammad.org/u/Gogsy)
#### Post date: [November 7, 2025, 12:05pm UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048/5 "2025-11-07T12:05:46Z")
As helpfull this is I can’t risk going test versions… Unsless you can pursuade me that 7.0 is stable enough to handle Customer support and another 15-20 departments 😅
---
### Author:  [@MrGeneration](https://community.zammad.org/u/MrGeneration)
#### Post date: [November 7, 2025, 12:13pm UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048/6 "2025-11-07T12:13:51Z")
Didn‘t you day that your current active instanxe runs on alpa…? 🤣
---
### Author:  [@Gogsy](https://community.zammad.org/u/Gogsy)
#### Post date: [November 7, 2025, 12:25pm UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048/7 "2025-11-07T12:25:51Z")
Hahahhaa yes 6.6, this was legacy from old administrator who installed it and now I am trying to create a much more stable enivroment for this system.
😅
---
### Author:  [@MrGeneration](https://community.zammad.org/u/MrGeneration)
#### Post date: [November 7, 2025, 12:55pm UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048/8 "2025-11-07T12:55:02Z")
I don‘t see much of a difference to continue that path until Zammad 7.0 comes to be honest.
---
### Author:  [@Gogsy](https://community.zammad.org/u/Gogsy)
#### Post date: [November 7, 2025, 1:15pm UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048/9 "2025-11-07T13:15:32Z")
I have to migrate from old server to new, and installing dev on new put’s me on 7.0 and old one then needs an update as well.
Is it possible to install last 6.6 from [packeger.io](http://packeger.io)?
---
### Author:  [@MrGeneration](https://community.zammad.org/u/MrGeneration)
#### Post date: [November 7, 2025, 1:29pm UTC](https://community.zammad.org/t/database-migration-to-new-instance/19048/10 "2025-11-07T13:29:10Z")
7.0-alpha and 6.6-allha inho are the same. 6.6 was last communicated 2 months ago. That means you‘re also missing security updates.