Oracle tablespace management.

1.create tablespace
CREATE TABLESPACE USER_DATA
    LOGGING
    DATAFILE 'D:\oracle\product\10.2.0\oradata\victor\rsoa.dbf' SIZE 50m REUSE
           
    AUTOEXTEND
    ON NEXT  1280K MAXSIZE  16383M EXTENT MANAGEMENT LOCAL
2.drop tablespace
DROP TABLESPACE USER_DATA INCLUDING CONTENTS;