Oracle中imp导入相同的两个用户的数据

　　操作系统为WIN2Kserver,数据库为817
　　用户user022004对应表空间user022004用户user072004对应表空间user072004，现想将user072003用户的数据导入到user072004中。
　　经过查找论坛中的资料总结如下:
　　exp user022004/user022004@jhzy file=f:ackupuser022004.dmp
　　OWNER=user022004 log=f:ackupuser022004.log
　　create user user072004 identified by user072004 default
　　tablespace user072004;
　　GRANT CONNECT,RESOURCE,IMP_FULL_DATABASE TO user072004;
　　revoke unlimited tablespace from user072004;
　　alter user user072004 default tablespace user072004 quota
　　unlimited on user072004;
　　imp user072004/user072004@jhzy file=f:ackupuser022004.dmp
　　ignore = y fromuser = user022004 touser = user072004 log=f:ackupuser072004.log
　　关健是revoke unlimited tablespace from user072004;
　　和alter user user072004 default tablespace user072004 quota
　　unlimited on user072004;