WAS v8.5 > Migrate, coexist, and interoperate > Migrating Data access resourcesMigrating data sources
Subtopics
- Migrating applications to use data sources of the current JCA
Migrate the applications that use Version 4 data sources, or data sources (WebSphere Application Server V4), to use data sources that support more advanced connection management features, such as connection sharing.- Verifying Apache Derby automatic migration
v8.5 of the application server requires Apache Derby to run at a minimal version of v10.1.x. The migration tool upgrades databases that are accessed through the embedded framework by some internal components, such as the UDDI registry. The tool also upgrades Derby instances the applications access through the embedded framework. Verify the migration results for these backend databases.- Upgrading Apache Derby manually
During the upgrade of the application server, the migration tool attempts to upgrade instances of Apache Derby that are accessed through the embedded framework only. The automatic upgrade excludes Derby instances that transact with applications through the Network Server framework. This exclusion eliminates the risk of corrupting third party applications that access the same database instances as the application server. You must manually upgrade database instances that are accessed through the Network Server framework. Do the same for databases that fail the automatic migration.- Directory conventions
References in product information to app_server_root, profile_root, and other directories imply specific default directory locations. This article describes the conventions in use for WAS.