Proper location for rollback segments?

I have an RBS tablespace that contains my rollback segments. When working in 8i DBA Studio, I notice that in the tablespace tree, every tablespace contains its own "Rollback Segments" folder. My understanding was that all rollback segments should be created in their own tablespace. Is it proper to do that, or to create rollback segments within individual tablespaces? Do those individual rollback segment folders just provide a location for temporary rollback segments, like when you create a large temporary segment to handle a one-time operation?

Thanks in advance...  

-- 
Sent by dbkdbk from hotmail  part  from  com
This is a spam protected message. Please answer with reference header.
Posted via http://www.usenet-replayer.com/cgi/content/new