SUBTYPE(oracle compatibilty)

i m trying to create a simple package in DB2 10.1 that is as follows

CREATE OR REPLACE PACKAGE math
IS
SUBTYPE tinyint IS INTEGER RANGE -256 .. 255 NOT NULL
END;

i have set oracle compatbility using "db2set DB2_COMPATIBILITY_VECTOR=ORA" and used IBM data studio to run the code. It should have worked as it is mentioned in the IBM website "http://pic.dhe.ibm.com/infocenter/db2luw/v10r1/index.jsp?topic=%2Fcom.ibm.db2.luw.apdv.plsql.doc% 2Fdoc%2Fc0060658.html".
But i m getting "An unexpected token "IS" was found following "SUBTYPE tinyint IS INTEGER RANGE -256 .. 255 NOT NULL". Expected tokens may include: "'".. SQLCODE=-104, SQLSTATE=42601, DRIVER=4.13.111
" error.