Oracle11g数据库迁移到Oracle12C的PDB（使用impdp/expdp）
alter pluggable database hrdb close immediate;
DROP PLUGGABLE DATABASE hrdb INCLUDING DATAFILES;  

--一、数据备份
mkdir /oradata/dumpdir
--创建目录
create or replace directory exp_dir as '/oradata/dumpdir';
--授权
grant read,write on directory exp_dir to hradm;

--查询
select * from dba_directories;

expdp admin/admin file=hr.dmp directory=exp_dir schemas=hradm;

--删除
drop directory exp_dir;


---二、数据导入Oracle12C
--登录cpcdb
$sqlplus sys/[email protected]:1531/hrdb as sysdba

--创建目录
create or replace directory exp_dir as '/oradata/dumpdir';
--授权
grant read,write on directory exp_dir to hradm;



--查询
select * from dba_directories;

--创建tbscpc表空间

create tablespace tbshr
datafile '/oradata/edw/hrdb/hrdb-001.dbf'
size 2G
autoextend on
next 64m maxsize 20G
segment space management auto
extent management local;

alter tablespace tbshr
add datafile '/oradata/edw/hrdb/hrdb-002.dbf' size 2G
autoextend on
next 50m maxsize 20G;

alter tablespace tbshr
add datafile '/oradata/edw/hrdb/hrdb-003.dbf' size 2G
autoextend on
next 50m maxsize 20G;


--给cpcadm和admin授权，并修改默认表空间
grant dba,resource to hradm;
select * from dba_users where username='HRADM';
alter user hradm default tablespace tbshr;

alter database default tablespace tbshr;

create user admin identified by admin;
grant connect,dba to admin;

--使用impdp导入hrdb数据

impdp admin@hrdb directory=exp_dir dumpfile=hr20180401004000.DMP  remap_tablespace=tbs_hr:tbshr   remap_schema=hr:hradm schemas=hr table_exists_action=replace transform=segment_attributes:n

remap_tablespace=tbs_hr:tbshr  原来表空间:新的表空间
remap_schema=hr:hradm          原来的schema:现在的schema
 transform=segment_attributes:n 去掉表空间和存储子句，加上这个参数后，remap_tablesapce参数就会失效，就会倒进用户默认的表空间，