Scenario 1: Backup 2 datafiles each of 20 GB datafile using 4 RMAN channels. Use the default setting for all RMAN channels
Scenario 2: Backup 2 datafiles each of 20 GB datafile using 4 RMAN channels. Each channel backs up 2 datafiles at the same time with “parallel=2”
Scenario 3: Backup 2 datafiles each of 20 GB size using 4 RMAN channels. Each channel backs up data with “section size=5GB"
Scenario 4: Backup 2 datafiles each of 20 GB datafile using 4 RMAN channels. Each channel backs up 2 datafiles at the same time with “parallel backups=2”