> Any idea why I am having this exception when trying to create a
> Pool?
> ...
> ds.setEncoding("ISO8859_1");
> ds.setCharSet("ISO8859_1");

Seems to be both bug in your code (charSet is Java encoding, i.e.
"ISO-8859-1", not "ISO8859_1"), but our encoding mapping also contains
wrong character sets... Strange, that should have been fixed for a
long time already.

Roman