trigger

I have a question:

Is it possible to execute external SQL Plus commands like EXP (export) from within a trigger? If so how can I code this? If not then is there another way to perform this function.

Basically, I want to export tables in format ascii whenever an INSERT statement is executed using a Trigger.

Thanks in Advance.

-- 
Devis Pizzolon
Database Master
Mall Italy Lab.
http://www.mall.it
devis_at_mall.it