Oasis2Service appears to be installed by Sony with its Vaio messenger program. It apparently allows Sony to send you hints and tips on using your laptop. When I uninstalled the program, the Oasis2Service was removed as well.
Here is the description of the program and a link to Sonys site on it.
VAIO Messenger is a software utility that provides hints and tips about using your VAIOŽ computer. It also offers optional accessories that are compatible with your computer and available for purchase.
VAIO Messenger can be uninstalled through the operating system and can only be reinstalled by performing a C: Drive recovery or a full system recovery.
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