Import and Rollback Segment Question

For a SQL-Import session on Oracle V7, is it possible to select a rollback segment to be used and thus prevent this message from appearing?

  "Error unable to extend rollback segment table import rolled back"

I'm looking for something like the following command that works in SQL*Plus "Set transaction use rollback segment xxx"

TIA Jeremy Russell Received on Mon Dec 09 1996 - 00:00:00 CET