I have tried to install the oracle sync client for Mac OS (v 9.x) and it will just not install on any Leopard OS Macs. The console message repeats the error:
5/27/08 11:07:12 AM [0x0-0x12012].Oracle Calendar Sync installer.1 2008-05-27 11:07:12.373 install[126:190b] CFPropertyListCreateFromXMLData(): Old-style plist parser: missing semicolon in dictionary.
5/27/08 11:07:15 AM com.apple.launchd ([0x0-0x12012].Oracle Calendar Sync installer.1) Stray process with PGID equal to this dead job: PID 127 PPID 126 osascript
The installer does work with Tiger. I have found that it complains about some Java errors when its unpacking itself but I have the most recent version of Java available for this OS.
I was able to get the sync to work when I started on a machine running Tiger (OS 10.4) and then upgraded to Leopard, but NOT on any machines that start at Leopard.
I've just about abandoned Oracle Calendar given their (lack of) product support, and likewise for PalmOS devices.
Bring on iPhone.