2015-May-22
In Oracle database, dropping a table don‘t free up the space directly. You‘ll need to disabled the DB recycle bin. So whenever we drop something, it‘s purged automatically to free the space.
http://docs.oracle.com/cd/E18283_01/server.112/e17120/tables011.htm
And another minor suggestion about searching Oracle doc on Google. Add 112 to show 11g release 2 doc on top.
原文：http://www.cnblogs.com/unclerayray/p/4523027.html