FULL DATABASE EXPORT BACKUP USING DATAPUMP (EXPDP)

Change path as per your requirment



bash-3.2$
bash-3.2$ cat full_export.sh

ORACLE_SID=TESTRE
ORACLE_HOME=/opt/oracle/product/10.2.0/db_1; export ORACLE_HOME
PATH=$ORACLE_HOME/bin; export PATH
expdp system/manager dumpfile=full_backup14012015.dmp logfile=full_backuplog.log directory=datapump_dir full=y
bash-3.2$
bash-3.2$

save with 

full_export_sh

and run with ./full_export.sh


You can also run in background

nohup ./full_export.sh &

press enter

bash-3.2$ tail -f nohup.out
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT