RE: Seeking Advice on Appian On-Premise Upgrade Path (23.3 to 25.3) with HA Setup

Shubham Aware — Thu, 11 Sep 2025 06:11:13 GMT

[quote userid="255168" url="~/discussions/f/administration/39703/seeking-advice-on-appian-on-premise-upgrade-path-23-3-to-25-3-with-ha-setup"]Is this sequential upgrade path (via 25.1) the recommended or most stable approach?[/quote]

Yes, 23.3 -> 25.1 -> 25.3 is required since 25.3 requires minimum version 23.4, making the intermediate step mandatory.

[quote userid="255168" url="~/discussions/f/administration/39703/seeking-advice-on-appian-on-premise-upgrade-path-23-3-to-25-3-with-ha-setup"]For those running Appian in a High Availability (HA) setup, how did you manage the upgrade across multiple instances?[/quote]

Use rolling upgrades -> take one node offline, upgrade it, validate, bring it back, then proceed to next node while maintaining service availability.

[quote userid="255168" url="~/discussions/f/administration/39703/seeking-advice-on-appian-on-premise-upgrade-path-23-3-to-25-3-with-ha-setup"]Were there any challenges or performance impacts during the production upgrade, especially related to backup/restore of large volumes of data?[/quote]

Expect 2-4+ hour downtime for database schema migrations on large datasets and potential plugin compatibility issues with each version jump.

[quote userid="255168" url="~/discussions/f/administration/39703/seeking-advice-on-appian-on-premise-upgrade-path-23-3-to-25-3-with-ha-setup"]Any lessons learned or best practices you’d recommend to ensure a smooth upgrade?[/quote]

Test the exact sequential upgrade path (23.3 -> 25.1 -> 25.3) in a production-clone environment and maintain full backups at each step.