1、创建directory
create directory dump_dir as 'D:\dump_dir'
2、expdp备份schema
expdp system/1qaz2wsx@ETCNC directory=dump_dir dumpfile=backupfile.dmp logfile=expdp_log.log schemas=LQEAM
3、impdp恢复指定schema，并改名
impdp system/1qaz2wsx@ETCNC directory=dump_dir dumpfile=backupfile.dmp logfile=impdp_log.log rempap_schema=LQEAM:LQ