You can register local repositories with a global repository to create a repository domain.When you register a local repository, the code pages of the local and global repositories must be compatible. You can copy objects from the local repository to the global repository and create shortcuts. You can also copy objects from the global repository to the local repository.
If you unregister a repository from the global repository and register it again, the PowerCenter Repository Service re-establishes global shortcuts. For example, if you create a copy of the global repository and delete the original, you can register all local repositories with the copy of the global repository. The PowerCenter Repository Service reestablishes all global shortcuts unless you delete objects from the copied repository.
A separate PowerCenter Repository Service manages each repository. For example, if a repository domain has three local repositories and one global repository, it must have four PowerCenter Repository Services. The PowerCenter Repository Services and repository databases do not need to run on the same machine. However, you improve performance for repository transactions if the PowerCenter Repository Service process runs on the same machine where the repository database resides.
You can move a registered local or global repository to a different PowerCenter Repository Service in the repository domain or to a different Informatica domain.