备份数据库：
打开cmd命令窗口，输入以下命令(根据自己需要修改相应的账户密码以及路径):    

导出： exp TA41/TA41@127.0.0.1/ydtest1 file=d:\TA41.dmp LOG=d:\TA41.LOG  indexes=n statistics=none
导入： imp local_kettle/local_kettle@127.0.0.1/orcl  file=D:\KETTLE.dmp full=y ignore=y statistics=none  

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还原数据库：

1.创建表空间：
create tablespace IDX_INDB logging datafile 'D:\app\tablespace\IDX_INDB01.dbf' size 10240M reuse autoextend on next 100M maxsize unlimited ;
create tablespace DATA_INDB logging datafile 'D:\app\tablespace\DATA_INDB01.dbf' size 10240M reuse autoextend on next 100M maxsize unlimited ;

create tablespace IDX_MKDB logging datafile 'D:\app\tablespace\IDX_MKDB01.dbf' size 10240M reuse autoextend on next 100M maxsize unlimited ;
create tablespace DATA_MKDB logging datafile 'D:\app\tablespace\DATA_MKDB01.dbf' size 10240M reuse autoextend on next 100M maxsize unlimited ;

create tablespace KETTLE logging datafile 'D:\app\tablespace\KETTLE.dbf' size 20M reuse autoextend on next 50M maxsize unlimited ;

CREATE TABLESPACE INDBADMIN         
         DATAFILE 'D:\jgbs\initdb\db1.dbf'
         SIZE 500M
         AUTOEXTEND ON
         NEXT 100M MAXSIZE UNLIMITED
         EXTENT MANAGEMENT LOCAL;
ALTER TABLESPACE INDBADMIN  ADD DATAFILE   'D:\jgbs\initdb\db2.dbf'  
SIZE 500M
AUTOEXTEND  ON NEXT 100M maxsize unlimited ;

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2.创建用户
CREATE USER INDBADMIN IDENTIFIED BY INDBADMIN
         ACCOUNT UNLOCK
         DEFAULT TABLESPACE INDBADMIN;
GRANT CONNECT, RESOURCE,dba TO INDBADMIN;

CREATE USER KETTLE IDENTIFIED BY KETTLE
         ACCOUNT UNLOCK
         DEFAULT TABLESPACE INDBADMIN;
GRANT CONNECT, RESOURCE,dba TO KETTLE;

CREATE USER MK_DB IDENTIFIED BY MK_DB
         ACCOUNT UNLOCK
         DEFAULT TABLESPACE INDBADMIN;
GRANT CONNECT, RESOURCE,dba TO MK_DB;

3.导入dmp文件
    imp INDBADMIN/INDBADMIN@127.0.0.1/orcl  file=D:\app\database\INDBADMIN.dmp full=y ignore=y statistics=none
    imp KETTLE/KETTLE@127.0.0.1/orcl  file=D:\app\database\kettle.dmp full=y ignore=y statistics=none
    imp MK_DB/MK_DB@127.0.0.1/orcl  file=D:\app\database\mk_db.dmp full=y ignore=y statistics=none