using expdp and impdp in oracle 10g 11g

ora_impdp_expdp.bat

# create directory 
create directory dmpdir as 'c:/temp';
select directory_name,directory_path from dba_directories;

# expdp owner
create user scott identified by tiger;
grant connect, resource to scott;
...
grant read, write on directory dmpdir to scott;
expdp scott/tiger@xe directory=dmpdir dumpfile=scott.dmp logfile=expdp.log

# impdp owner
create user new_scott identified by tiger;
grant connect, resource to new_scott;
grant read, write on directory dmpdir to new_scott;
impdp new_scott/tiger@xe directory=dmpdir dumpfile=scott.dmp remap_schema=scott:new_scott logfile=impdp.log

# other example
expdp system/system@xe directory=dmpdir dumpfile=schemas.dmp logfile=expdp.log schemas=schema1,schema2
impdp system/system@xe directory=dmpdir dumpfile=schemas.dmp logfile=impdp.log table_exists_action=replace schemas=schema1,schema2
impdp system/system@xe directory=dmpdir dumpfile=schemas.dmp logfile=impdp.log table_exists_action=replace schemas=schema1,schema2 remap_tablespace=ts1:new_ts1 remap_schema=schema1:new_schema1