Does anyone know how I might split a string into an array in pl/sql? The kind folks at Oracle chose not to include that functionality in their language, and now I'm up a creek.I need to split ...

If it is just a 2D array (looks like it could be a staggered array, which has to be handled properly), then you can just create a 2D array in C# and serialize it into a UInt32 [] and pass that along.