1. Log-on to server where Oracle is installed, go to $ORACLE_HOME/bin/
Export schema oracle_db/oracle_db from orcl using the following command,
exp userid= oracle_db/oracle_db@orcl file=/tmp/oracleDBExport.dmp rows=(n) statistics=none
2. Go to /tmp/ folder and check oracleDBExpor.dmp file is available.
3. Log-on to server where schema is to be imported, go to $ORACLE_HOME/bin/
Execute the following command