Oracle数据库备份与REMAP_SCHEMA

# 备份oracle数据库数据 其中xir_trdj为用户 xpar为密码 schemas定义数据库实例 dumpfile定义备份的文件名称
expdp xir_trdj/xpar@191.168.1.13/orcl schemas=xir_mdj dumpfile= 20200311_131012_XIR_MDJ.DMP
expdp xir_trdj/xpar@191.168.1.13/orcl schemas=xir_trdj dumpfile= 20200311_131012_XIR_TRDJ.DMP

# 查询备份文件存放的目录
select * from dba_directories
# 导出的文件存在于如下目录中
DATA_PUMP_DIR	/data/u01/app/oracle/admin/orcl/dpdump/

# REMAP_SCHEMA=source_schema:target_schema
# 将xir_mdj的数据拷贝一份到xir_mdj_2  xir_trdj的数据拷贝一份到xir_trdj2

# 创建用户并赋予权限
sqlplus /nolog
conn /as sysdba
create user xir_trdj_2 identified by xpar;
create user xir_mdj_2 identified by xpar;
grant dba to xir_trdj_2;
grant dba to xir_mdj_2;
grant all privileges to xir_trdj_2;
grant all privileges to xir_mdj_2;

# 退出登录 在oracle账户下执行
impdp xir_trdj_2/xpar dumpfile=20200311_131012_XIR_MDJ.DMP logfile=20200311_131012_XIR_MDJ.log REMAP_SCHEMA=xir_mdj:xir_mdj_2
impdp xir_trdj_2/xpar dumpfile=20200311_131012_XIR_TRDJ.DMP logfile=20200311_131012_XIR_TRDJ.log REMAP_SCHEMA=xir_trdj:xir_trdj_2