From a high level :
1. Bring the source database to a quite state virtually stopping ALL activity including replication if any
(logs can not be taken across).
Execute flush stats + check points to force in memory changes to disk
2. Dump database using the normal dump command.
3. Port the file to the new host using your favorite mechanism
4. Load the database using normal load command
(It understands the change of platform)
5. Online database ( do not allow non-SA users to connect)
6. Check for suspect indexes etc and rebuild (see link below)
7. Re-establish replication as needed.
Following link -- though for earlier version -- may help.
hthttp://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/40cec69e-285b-3010-da84-9be2f8d2b727?overridelayout=t…
HTH
Avinash