Check out [url]http://technet.oracle.com/docs/products/oracle8i/doc_library/817_doc/server.817/a76992/ch14_str.htm[/url]

or
[url]http://technet.oracle.com/docs/products/oracle8i/doc_library/817_doc/server.817/a85397/state11d.htm#2061798[/url]

[Edited by marist89 on 01-04-2001 at 12:08 PM]