what are Major performance tuning areas in oracle database ?

Major performance tuning areas in oracle database.
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- Memory - shared pool, large pool, buffer cache, redo log buffer, and sort area size.
- I/O - distributing I/O, striping, multiple DBWn processes, and DBWn I/O slaves.
- CPU - CPU utilization.
- Space management - extent allocation and Oracle block efficiency.
- Redo log and checkpoint - redo log file configuration, redo entries, and checkpoint.
- Rollback segment - sizing rollback segments.
- Network