Oracle12c RAC数据导出至Oracle11g

 一、Oracle12c导出数据

1.连接数据库

sqlplus / as sysdba

2.查看pdbs

show pdbs;

3.切换pdb

alter session set container=spdb1pdb;

4.指定dump存放路径

create directory dump as ‘/tmp/dumpdata‘;

5.查询表空间及大小

select tablespace_name,sum(bytes)/1048576 from cdb_data_files group by tablespace_name;

 6.导出数据

expdp user/passwd@localhost:1521/spdb1pdb directory=dump dumpfile=dump190809.dump logfile=dump190809.log version=11.2.0.4.0 cluster=n;

注：加参数schemas={} 报错

以下报错解决方式：

dump路径/tmp/dumpdata，在tmp目录新建dumpdata文件夹

等待导出完成

二、Oracle11g导入

 1.查看导出文件及日志

2.将文件拷贝至11g服务器

  scp dump190809.dump root@192.168.0.64:/tmp

因网络原因两台服务器不通，通过其他途径拷贝至对应服务器即可

3.连接11g服务器

sqlplus / as sysdba

4.创建同名表空间及临时表空间

create tablespace CLOUDDATA datafile ‘/u01/app/oracle/oradata/orcl/CLOUDDATA.dbf‘ size 500m REUSE autoextend on next 50M;

create temporary tablespace temp1 tempfile ‘/u01/app/oracle/oradata/orcl/temp1.dbf‘ size 100m REUSE autoextend on next 50M;

5.创建用户并赋权

CREATE USER USER IDENTIFIED BY PASSWD DEFAULT TABLESPACE CLOUDDATA TEMPORARY TABLESPACE temp1;

GRANT CONNECT, RESOURCE, DBA TO USER;

注：删除用户及清除SESSION

select sid,serial# from v$session where username=‘USER‘;

ALTER SYSTEM KILL SESSION ‘185,37315‘; 

DROP USER USER CASCADE;

6.指定dump存放路径

create directory dump as ‘/tmp/dumpdata‘;

impdp user/passwd directory=dump dumpfile=dump190809.dump logfile=dump190809.log

等待导入完成，对此处报错忽略。