expdp/impdp数据泵用法
--创建目录映射别名 create directory JHRA as 'C:\DataBaseBak\hra_dev\JHRA' --导出数据 expdp JHRA/JHRA@hra_dev directory=JHRA dumpfile=20190420 --为HRADEV用户导入数据 impdp JHRA/JHRA@hra_dev directory=JHRA dumpfile=20190420;.dmp remap_schema=JHRA:HRADEV remap_tablespace=JHRA:HRADEV