oracle from the user to establish a database backup

One: Create a temporary table space

create temporary tablespace IAF_DATA_TEMP tempfile 'IAF_DATA_TEMP.DBF'
size 20GB autoextend on;

Two: Create a data table space

create tablespace IAF_DATA logging datafile 'IAF_DATA.DBF' 
size 30GB autoextend on;

Three: Create a user and specify the table space

create user user_p  
          identified by user_p  
          default tablespace IAF_DATA 
          temporary tablespace IAF_DATA_TEMP 
          profile default;

Four: User Authorization

grant connect to user_p; 
grant resource to user_p; 
grant dba to user_p;
grant unlimited tablespace to user_p;

Five: Backup Database

exp user_p/user_p@ORCL  file=D:\DB_BUP_20190726\odsuser_dj.dmp log=D:\DB_BUP_20190726\odsuser_dj.log

Six: Import Database

user_p IMP / user_p @localhost : 1521 / ORCL FROMUSER = user_p_qz TOUSER = user_p File = D: \ zh_1104 \ user_p.dmp log = D:. \ user_p \ user_p log ; 
FROMUSER: Remove User Database 
touser: user into the database