EXPDP/IMPDP

CREATE DIRECTORY DIR AS '/opt/oracle';
GRANT read, write ON DIRECTORY dmpdir TO scott;
C:\EXPDP DEVCPOS/DEVCPOS DIRECTORY=DIR DUMPFILE=DEVCPOS.DMP
C:\IMPDP SYSTEM/SYSTEM DIRECTORY=DIR DUMPFILE=DEVCPOS.DMP
C:\IMPDP QACPOS/QACPOS DIRECTORY=DIR
C:\expdp scott/tiger schemas=SCOTT directory=SCOTT_DIR dumpfile=SCOTT.dmp logfile=expdpSCOTT.log
C:\IMPDP TEST/TEST@ORCL DIRECTORY=TSTDIR DUMPFILE=BACKUPSCOTT.DMP SCHEMAS=SCOTT REMAP_SCHEMA=SCOTT:TEST