Create tablespace in Oracle

The

create tablespace

statement is used to create a
tablespace.

Permanent tablespace

create tablespace ts_something
logging
datafile '/dbf1/ts_sth.dbf'
size 32m
autoextend on
next 32m maxsize 2048m
extent management local;

create tablespace data datafile '/home/oracle/databases/ora10/data.dbf'
size                                  10M
autoextend on maxsize                200M
extent management local uniform size  64K;

Temporary tablespace

create temporary tablespace temp_mtr
tempfile '/dbf1/mtr_temp01.dbf'
size 32m
autoextend on
next 32m maxsize 2048m
extent management local;

Note, a temporary tablespace has tempfiles, not
datafiles.

Undo tablespace

create undo tablespace ts_undo
datafile '/dbf/undo.dbf'
size 100M;

Misc

More than one
datafile can be created with a single create tablespace command:

create tablespace ts_sth
datafile 'c:\xx\sth_01.dbf' size 4M autoextend off,
'c:\xx\sth_02.dbf' size 4M autoextend off,
'c:\xx\sth_03.dbf' size 4M autoextend off
logging
extent management local;

Adding a
tablespace to a database is a structural change that

requires a backup.