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;

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

[oracle@localhost ~]$ 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

[oracle@rac1 u01]$ export ORACLE_SID=orcl1

[oracle@rac1 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。

 

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