was asked what is the error ?
C:\Sun\glassfish-3.0.1-b15\glassfish\bin>asupgrade
The system cannot find the path specified.
C:\Sun\glassfish-3.0.1-b15\glassfish\bin>java -version
java version "1.6.0_20"
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)
C:\Sun\glassfish-3.0.1-b15\glassfish\bin>