Datapump Expdp "Consistent" Equivalent

Get the last system change number:

SELECT to_char(DBMS_FLASHBACK.GET_SYSTEM_CHANGE_NUMBER,'9999999999999999999') from dual;

Then, datapump export using flashback_scn option:

expdp userid/password DIRECTORY=DATA_PUMP_DIR schemas=userid FLASHBACK_SCN=49552038 dumpfile=’abc.dmp’ logfile='abc.log'

Then import using normal parameters.