Sometimes migration tasks are necessary to update to a certain xUML Runtime version, or change a system configuration.
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Fix Persistent State Database: Orphaned Rows and Slow Service Startup
With PAS 26.3.1 / xUML Runtime 2026.8 comes a fix that prevents orphaned rows in the persistent state database that lead to slow service startup with SQLite. This Runtime also cleans existing orphans on service startup.
This page describes how to fix the startup scripts manually if you do not want to update the Runtime. -
Migrating from a Docker or Bridge setup to Kubernetes
Migrating xUML services from a Docker or Bridge setup to Kubernetes introduces several technical and organizational changes. This page gives you a compact task overview so you can plan your migration, avoid common pitfalls, and coordinate early with your DevOps team and Scheer PAS support where needed. -
Migrating the persistent state implementation
Find here an overview on the changes to the persistent state implementation. Refer to How to migrate a Persistent State DB used by multiple independent servicesHow to migrate a Persistent State DB used by multiple independent services for a detailed procedure how to migrate existing services that are concerned by this change.