Oracle and Extended SQL

Hello, I just heard that you are not able to search anything from LONG-type fields
with normal SQL. Well, after reading oracle documents I found out that I should
use extended SQL which provides CONTAIN and other sql extensions so that I could
search from LONG fields. I use SQLPLUS in one oraperl script and the SQLPLUS
returns the values i need. Now, i need to know is how to start using that Extended
SQL or can i even use it from command line like SQLPLUS? Or can I somehow use
Extended SQL features from SQLPLUS?

Ps. what is the difference between textserver and textretrieval in oracle? :)

Thank you very much for your assistance.

	Atte Lahtiranta
	Computer Engineer Student
	Espoo-Vantaa Institute of Technology
	attetl_at_evitech.fi