使用Oracle数据泵迁移数据库

Posted 2020-11-02

一、准备目标数据库
1、确保目标数据库的字符集 NLS_CHARACTERSET 和源数据库一致
select * from nls_database_parameters
2、创建要迁移数据库表空间
select tablespace_name from dba_tablespaces
create tablespace BBGODB datafile ‘+DATA_VG‘ size 300m autoextend on
3、创建相应的schema
create user BBGO identified by BBGO default tablespace BBGODB
grant connect,resource to BBGO
4、创建目录并授权
mkdir /home/oracle/oracleDump
sqlplus / as sysdba
create or replace directory dump_dir as ‘/home/oracle/oracleDump‘;
grant read,write on directory dump_dir to BBGO;
exit

二、导出源数据库的schema
1、创建目录并授权
mkdir /home/oracle/oracleDump
sqlplus / as sysdba
create or replace directory dump_dir as ‘/home/oracle/oracleDump‘;
grant read,write on directory dump_dir to BBGO;
exit
2、导出数据
expdp "‘/ as sysdba‘" schemas=BBGO dumpfile=expdp.dmp DIRECTORY=dump_dir logfile=BBGO.log compression=all

三、将数据导入到目标数据库中
impdp "‘/ as sysdba‘" directory=dump_dir dumpfile=expdp.dmp schemas=BBGO
注：如果schema不同，使用 remap_schema=BBGO:BBGOA 重新映射