JDBC_HOME represents the directory in which you install jConnect.
The zip file is not aware of your
directory structure and installs everything below a directory with
the specific jConnect driver’s name.
For example, if you unzipped jconnect60.zip in C:\Sybase on Windows, you would set JDBC_HOME to:
C:\Sybase\jConnect-6_0
On UNIX or Linux, if you installed the zip file into /usr/local/Sybase, you would set JDBC_HOME to:
/usr/local/Sybase/jConnect-6_0