Verify the Port/SID

See Set up CLASSPATH

If you do not configure the default listener port numbers or database SID in your installation--such as ports 1521, 2481, and SID orcl--the samples will not work correctly. All the samples expect the default port numbers and database SID provided by an Oracle8i Typical install. If you have different values, specify the new port numbers as follows:

Host type	Directions
UNIX	$ make SERVICE=sess_iiop://localhost:myportnum:mysid
Windows NT	In the control panel, set the system environment variable ORACLE_SERVICE to sess_iiop://localhost:myportnum:mysid

See Test Install with Samples