Slave Driving – Getting SQL*Plus to do it for you

In my haste to play around in my shiny new Oracle XE instance, I’ve forgotten to set the Default Tablespace for any new users I create.
As a result I’ve got few tables and indexes in the SYSTEM tablespace. Fortunately, I don’t have to go through the drudgery of moving all of them by hand, I can get SQL*Plus to do it for me.