sqlplus /nolog
conn sys/pwd as sysdba
drop user dtest cascade;
create user dtest identified by test;
grant connect, resource to dtest;
drop directory dpdata1;
create directory dpdata1 as '/home/oracle';
grant read, write on directory dpdata1 to dtest;
grant EXP_FULL_DATABASE to  dtest;
grant IMP_FULL_DATABASE to dtest;
SELECT directory_path FROM dba_directories WHERE directory_name = 'DPDATA1';
conn dtest/test
create table ttest nologging as select object_id, object_name, object_type from all_objects;
quit;
expdp dtest/test DIRECTORY=dpdata1 DUMPFILE=ttest.dmp