[sknmail@rediffmail.com]

Hi Ian,

loadjava executable should be present in $ORACLE_HOME/bin folder on the Application Server where Oracle client is installed.
If you have the Oracle client properly installed and ORACLE_HOME env variable properly configured; I think you should not face this issue.
The reason I am saying Oracle Client should be properly installed is because I had a bad practice of copying Oracle client folder from one system to another while configuring the Devl env at work..and the issue I used to end up in this case was if you edit file loadjava; you would find that there are various path present which should be actually present on the system. So if you are doing the installation, all these would be taken care automatically.
Another check would be plz verify in gc3env.sh the path of Oracle Client for variable ORACLE_HOME is set properly. I hope this helps.

Regards,
Suresh