import and export

exp userid=usr/usrpass@tnsname consistent=Y statistics=NONE file=/home/ora10g/backup/db_backup_11Sep2009.dmp log=/home/ora10g/backup/db_backup_11Sep2009.log full=Y

imp userid=usr/usrpass@tnsname fromuser=usr touser=usr1 file=/home/ora10g/backup/db_backup_11Sep2009.dmp log=/home/ora10g/backup/db_backup_imp_XXSep2009.log full=N