hello all,
thanking all of you for the response.
the old backup file was deleted and automatically created new file and backup goes fine.
but I think this type of procedure might be a bit risking, suppose if i have to restore data of
day-before-yesterday. so I am now planing to change backup strategy.
i want to take a backup of each day ex: monday, tuesday .....
one way is scheduling(for each day) it with DBACOCKPIT.
so if i have to do it from dump command how can i do it
thanks