【創建表空間】
/*分爲四步 */
/*第1步：創建臨時表空間 */
create temporary tablespace user_temp
tempfile '/u01/oracle/user_temp.dbf'
size 50m
autoextend on
next 50m maxsize 1024m
extent management local;
/*第2步：創建數據表空間 */
create tablespace user_data
logging
datafile '/u01/oracle/user_data.dbf'
size 50m
autoextend on
next 50m maxsize 1024m
extent management local;
/*第3步：創建用戶並指定表空間 */
create user username identified by password
default tablespace user_data
temporary tablespace user_temp;
/*第4步：給用戶授予權限 */
grant connect,resource,dba to username;