Release 10.1A: OpenEdge Deployment:
Managing 4GL Applications

> ## Examples of portable and nonportable r-code

> Some r-code is portable, and some is not. You can usually port r-code between clients as long as you do not change display architectures, database types, platform classes or major r-code versions.

> Here are some examples:

> - If you port a Windows application to character-mode, you must recompile, because the display architecture has changed.

> - If you port a character application compiled against an ORACLE DataServer on a SUN workstation to a character application accessing an ORACLE DataServer on a Hewlett-Packard (HP) workstation, you do not have to recompile (assuming that the ORACLE release level does not change and both platforms are 32-bit or 64-bit respectively).

> - If you port a character application compiled against the DataServer for ORACLE on a SUN workstation to a character application accessing the DataServer for ODBC on an HP workstation, you must recompile, because the database type has changed.

> - If you migrate an application from either Progress® Version 8 or Progress Version 9 to OpenEdge Release 10, you must recompile it. If you want to migrate a Progress Version 8 application to OpenEdge 10, it is not necessary to upgrade to Version 9 first, you can upgrade from Progress Version 8 directly to OpenEdge Release 10.

> You must be able to reproduce the target environment to generate the required r-code. For each combination, you have to keep track of a different code tree. For each combination, you also require a full development OpenEdge product to do the compilations.

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