I am running Veritas bckup and using RMAN interface. In the database "recovery_parallelism=32" is set to 32.

1) Is the value is high enough.
2) Should I set paralell_max_server=
( I read that recovery_parallelism value should not exceed parallel_max_server value)
3) When should I consider parallel_max_server parameter?
4) I set my largepool_size, should I choose parallel_automatic_tuning.

I am using ORACLE 9.2 on HP