I know that exist a NetBackup command which made it possible to check all the Backups. Unfortunately I don't know any more which it was, and it was not bpverify!
No it's not this command! It was a command to check if not only backups are running BUT if files was really on this backup, and so on.... unfortunately I don't remember it
Actually there exists a script in ../NetBackup/bin/goodies/verify_images which verfies all images on the server. Internally it uses 'bpverify'. May be you we looking for this.