Here are some of the ways to find:

$env
or
$env |grep CLASSPATH
or
echo $CLASSPATH

If you would like to include the classpath at the time of login, add it to your .profile.

CLASSPATH=$CLASSPATH:$ORACLE_HOME:$ORACLE_HOME/jlib:$ORACLE_HOME/product/jdbc/lib;

export CLASSPATH

Hope this would help you.
Sam

[Edited by sambavan on 03-19-2001 at 08:00 PM]