????expdp userid='ecp_v_1_5/ecp' schemas=ecp_v_1_5 directory=DATA_FILE_DIR dumpfile=ecp_v_1_5.dmp  logfile=ecp_10.log version=10.2.0.1.0
????impdp userid='ecp_v_1_5/ecp' schemas=ecp_v_1_5 directory=DATA_FILE_DIR dumpfile=ecp_v_1_5.dmp version=10.2.0.1.0
????1.?????????
????SELECT privilege?? directory_name?? DIRECTORY_PATH FROM user_tab_privs t?? all_directories d WHERE t.table_name(+) = d.directory_name ORDER BY 2?? 1;
????2.????DIRECTORY
????create OR REPLACE directory DATA_FILE_DIR as 'E:oracledemoschemasales_history';
????3.???
????Grant read??write on directory DATA_FILE_DIR to dcops;