rman_duration

This parameter lets you slow down RMAN backups. It is passed to RMAN when save sets are being created, not for 1-to-1 file copies to disk ( disk_copy_cmd = rman).

It minimizes the disk/CPU load for RMAN backups. It is not used for RMAN restore, which always proceeds at maximum speed.

Caution

If the value of this parameter is too small - that is, insufficient to complete the backup - RMAN might abort.

            rman_duration = <min>

Default: 0 (no limit)

<min>: duration of a single RMAN call in minutes