创建表空间：

CREATE TABLESPACE NNC_DATA01 DATAFILE 'E:\ORACLE\oradata\orcl\nnc_data01.dbf' SIZE 64M 

AUTOEXTEND ON NEXT 5M EXTENT MANAGEMENT LOCAL UNIFORM SIZE 256K
;     
CREATE TABLESPACE NNC_DATA02 DATAFILE 'E:\ORACLE\oradata\orcl\nnc_data02.dbf' SIZE 64M 
AUTOEXTEND ON NEXT 5M EXTENT MANAGEMENT LOCAL UNIFORM SIZE 256K
;  
CREATE TABLESPACE NNC_DATA03 DATAFILE 'E:\ORACLE\oradata\orcl\nnc_data03.dbf' SIZE 128M 
AUTOEXTEND ON NEXT 10M EXTENT MANAGEMENT LOCAL UNIFORM SIZE 512K
;
CREATE TABLESPACE NNC_INDEX01 DATAFILE 'E:\ORACLE\oradata\orcl\nnc_index01.dbf' SIZE 64M
AUTOEXTEND ON NEXT 5M EXTENT MANAGEMENT LOCAL UNIFORM SIZE 128K
;     
CREATE TABLESPACE NNC_INDEX02 DATAFILE 'E:\ORACLE\oradata\orcl\nnc_index02.dbf' SIZE 64M
AUTOEXTEND ON NEXT 5M EXTENT MANAGEMENT LOCAL UNIFORM SIZE 128K
;  
CREATE TABLESPACE NNC_INDEX03 DATAFILE 'E:\ORACLE\oradata\orcl\nnc_index03.dbf' SIZE 128M
AUTOEXTEND ON NEXT 10M EXTENT MANAGEMENT LOCAL UNIFORM SIZE 256K;


创建用户、授权：
create user username identified by password default tablespace users temporary tablespace temp;
grant connect,dba to username;


数据库备份还原:
imp 用户/密码@orcl full=y file=e:\nc57.dmp ignore=y
exp 用户/密码@orcl file=e:\nc57.dmp full=y

删除oracle用户：

drop user username cascade;