4. create user newhr identified by 123456;
   grant connect, resource to newhr ;
   exp system file=exp_owner.dmp log=exp_owner.log owner=HR;
   imp system file=exp_tbemployee.dmp log=exp_tbemployee.log fromuser=HR touser= newhr;



5 .
a  -
b  - exp system file=exp_tbemployee.dmp log=exp_tbemployee.log  tables=employee;
c  - exp system file=exp_full_01.dmp log=exp_full_01.log full=y

d  - exp system file=exp_schema.dmp log=exp_schema.log owner=HR
e  - create user restore identified by 123456;
     grant connect, resource to restore;
     imp system file=exp_tbemployee.dmp log=exp_tbemployee.log fromuser=HR touser=restore ignore=y tables=employee;

6.
a - CREATE OR REPLACE DIRECTORY exerdba_dir AS 'c:\dir1\dir2';
    expdp uwclass/uwclass DIRECTORY=exerdba_dir DUMPFILE=exercdba1_full.dmp FULL=y ENCRYPTION=all ENCRYPTION_ALGORITHM=aes256 ENCRYPTION_MODE=dual ENCRYPTION_PASSWORD=oracle;
b - expdp uwclass DIRECTORY=exerdba_dir DUMPFILE=exercdba2.dmp SCHEMAS=HR,SCOTT;
c - expdp uwclass DIRECTORY=exerdba_dir DUMPFILE=exercdba2.dmp TABLES=HR.departments;
d -
    impdp system DIRECTORY=exerdba_dir DUMPFILE=exercdba1_full.dmp Schema=restore tables= HR.employees ;