set NLS_LANG=AMERICAN_AMERICA.AL32UTF8
exp jjhd_test/11111111@a_syj file="d:jjhd_test.dmp" log="d:jjhd_test.elog" STATISTICS=none tables=(a,b,c,d)
imp jjdh/11111111@a_syj file="d:jjhd_test.dmp" log="d:jjhd_test.ilog" fromuser=jjhd_test touser=jjhd ignore=y STATISTICS=none