JDBC_HOME represents the directory in which you install jConnect. For example:
The zip file is not aware of your
directory structure and installs everything below a directory with
the specific jConnect driver’s name.
On Windows:
If you unzipped the jConnect 6.05 driver in C:\Sybase on Windows, you must set JDBC_HOME to:
C:\Sybase\jConnect-6_0
On UNIX and Linux:
If you installed the zip file into /usr/local/Sybase, you would set JDBC_HOME to:
/usr/local/Sybase/jConnect-6_0