Oracle delete tablespace and user

– See which table spaces are available

select * from dba_tablespaces

– View current login user

select * from user_users

– View all users

select * from dba_users

– Delete user

drop user user_name

– Delete empty table spaces , But it doesn't contain physical files

drop tablespace tablespace_nam

– Delete non empty table spaces , But it doesn't contain physical files

drop tablespace tablespace_name including contents

– Delete empty table spaces , Contains physical files

drop tablespace tablespace_name including datafiles

– Delete non empty table spaces , Contains physical files

drop tablespace tablespace_name including contents and datafiles

– If a table in another table space has a foreign key and other constraints associated with the fields of the table in this table space , He shall add cascade

drop tablespace tablespace_name including contents and datafiles cascade