Oracle利用数据泵迁移用户

一.利用数据泵将数据导出

1.1.确定字符集：

select * from v$nls_parameters;

或

select userenv(‘language‘) from dual;

1.2.设置客户端字符集（Windows）

set NLS_LANG = NLS_LANGUAGE_NLS_TERRITORY.NLS_CHARACTERSET

1.3.确定schema的对象所占用表空间

SQL> Select distinct segment_type,tablespace_name
SQL> From dba_segments
SQL> Where owner=‘NC2010‘;

SEGMENT_TYPE       TABLESPACE_NAME
------------------ ------------------------------
TABLE              NNC_DATA03
TABLE              NNC_DATA02
LOBSEGMENT         NNC_DATA01
INDEX              NNC_INDEX01
INDEX              NNC_DATA01
INDEX              NNC_INDEX02
TABLE              NNC_DATA01
LOBINDEX           NNC_DATA01
INDEX              NNC_INDEX03

9 rows selected.

SQL>

1.4 查看用户默认表空间

select username,default_tablespace from user_users;

1.5.用数据泵导出数据

--创建directory 并赋权
SQL> conn / as sysdba;
SQL> create directory backup as ‘e:\backup‘;
SQL> grant read,write on directory backup to NC60;
SQL> select * from dba_directories

--导出schema
[[email protected] ~]$ expdp nc60/nc60 DIRECTORY=backup DUMPFILE=tianlesoftware.dmp SCHEMAS=NC60 logfile=exp.log;

--注，如果源库与目的库oracle版本不同，导出时需指定version参数。

二.将dump文件导入RAC或单实例

2.1 确定字符集

select userenv(‘language‘) from dual;

2.2 设置客户端字符集(linux)

export NLS_LANG = NLS_LANGUAGE_NLS_TERRITORY.NLS_CHARACTERSET

2.3 检查RAC运行状态

2.4 创建相关用户和表空间

--查看数据文件
select file_name from dba_data_files;

--创建表空间（与1.3查询结果相同）
--SQL> create tablespace NNC_DATA01  datafile ‘+DATA/orcl/datafile/tianlesoftware.dbf‘ size 50m;
--SQL> create tablespace NNC_DATA02  datafile ‘+DATA/orcl/datafile/tianlesoftware.dbf‘ size 50m;
--SQL> create tablespace NNC_DATA03  datafile ‘+DATA/orcl/datafile/tianlesoftware.dbf‘ size 50m;

--SQL> create tablespace NNC_INDEX01 datafile ‘+DATA/orcl/datafile/tianlesoftware.dbf‘ size 50m;
--SQL> create tablespace NNC_INDEX02 datafile ‘+DATA/orcl/datafile/tianlesoftware.dbf‘ size 50m;
--SQL> create tablespace NNC_INDEX03 datafile ‘+DATA/orcl/datafile/tianlesoftware.dbf‘ size 50m;

--创建用户
SQL> create user NC60 identified by NC60 default tablespace NNC_DATA01 temporary tablespace temp;

--赋予权限
Grant resource，connect，dba to NC60;

2.5 创建导入directory

SQL> create directory backup as ‘/backup‘;

SQL> Grant read,write on directory backup to NC60;

2.6 导入数据

[[email protected] u01]$ export ORACLE_SID=orcl1

[[email protected] u01]$ impdp nc60/nc60 DIRECTORY=BACKUP DUMPFILE=NC60.dmp SCHEMAS=NC60 logfile=impdp.log;

注，如果源库与目的库oracle版本不同，导入时需指定version参数。