Log switches before and after the backups I can understand, but I cannot think of any good reason for a log switch between each pair of tablespaces. Can anyone else on the Ixora Answers list think of a reason?

I'm trying to figure out how to set the best configuration in my online backup scripts. In order to do that, I've read a lot of books and one of them says that it's a good practice to perform a log switch between each

alter tablespace XXX BEGIN BACKUP
alter tablespace XXX END BACKUP
LOG SWITCH
alter tablespace XXX BEGIN BACKUP
alter tablespace XXX END BACKUP
...