32-bit JVM receiving Java objects from 64-bit JVM

Hi folks,
Question is: will there be problems for 32-bit JVM receiving Java objects from 64-bit JVM? and vice versa.
Our application client is running on 32-bit JVM, our server is running on 64-bit JVM. Client will send Java objects to server, and vice versa.
My past experience suggested when sending Java objects between client and server, both client and server needs to be compiled under the same JVM version. Any advice?
Christy

My past experience suggested when sending Java
objects between client and server, both client and
server needs to be compiled under the same JVM
version. Any advice?This is only a case if you omit explicit serialVersionUID. My advice is to ALWAYS specify it for classes you want to serialize over the wire or put into persistent storage. It is way too tricky to rely on default one to fail half a year later when some new programmer adds one new public method to a class.
Unless you need to deserialize already existing resources, there is no need to put any magic number in serialVersionUID - just put 1 for every class you create and possibly increase it by 1 every time you want to make incompatible version (which is not happening so often, as in real world you often try to stay as compatible as possible)

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