Want to upgrade Confluence from Version 8.5.20 to Version 9.2.3 for Long term support on Redhat 8

[Martin Neal]

I would like to upgrade Confluence from Version 8.5.20 to Version 9.2.3 for long term support on Redhat Version 8

Want to know if there are any gotchas to be aware of.

Would also be upgrading Jira from Version 9.12.16 to 10.3.5 for LTS

[AMZ Cabs Nagpur]

Hey Martin,

Upgrading Confluence to 9.2.3 (LTS) and Jira to 10.3.5 (LTS) on RHEL 8 is a solid move for long-term support. Here are a few key things to watch out for:

Test First! – Always run the upgrade in a staging environment first, especially since you're jumping a few versions.

Plugin Risks – Some older plugins might not work in the new versions—check compatibility before upgrading.

Database & Java – Make sure your DB is supported (e.g., PostgreSQL 13+) and that you’re on Java 11 (required for Confluence 9.x).

Reindexing – Both Confluence and Jira will likely need a full reindex post-upgrade, which can take time on large instances.

Backup Everything – Seriously, don’t skip this step.

[Rilwan Ahmed]

Hi @AMZ Cabs Nagpur 
Welcome to the community

[Rilwan Ahmed]

Hi @Martin Neal ,

You can directly upgrade from 8.5 to 9.2. Always go with latest available version. At present, it is 9.2.3.

Also as described by @AMZ Cabs Nagpur , here are some official links you can follow

1.  Confluence 9.2 upgrade notes
2. Supported platform