How to specify rollback segment?

Hi! I have a question about specifying a rollback segment for a specific transaction. I tried putting the line SET TRANSACTION USE ROLLBACK SEGMENT xyz before an anonymous PL/SQL block that loops and inserts a few hundred thousand rows into the database. It comes back with an error saying SET TRANSACTION USE ROLLBACK SEGMENT has to be the first statement in a transaction.
My question is how do you specify the use of a rollback segment in an SQL Plus script?

TIA Received on Sat Mar 14 1998 - 00:00:00 CST