Whole database backup using Grid Control:


run {
allocate channel oem_backup_disk1 type disk format '/home/oracle/sshaik/backup/08212015/%U';
backup as BACKUPSET tag '%TAG' database;
backup as BACKUPSET tag '%TAG' archivelog all not backed up delete all input;
release channel oem_backup_disk1;
}
allocate channel for maintenance type disk;
delete noprompt obsolete device type disk;
release channel;