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Continuation of Notes


Notes:

Output device configuration – Whether you use disk or tape for your output device, the number of available devices will have a large impact on RMAN performance. Of course, the specifications of the output devices will have an impact. You will not be able to backup or recover faster than the cumulative transfer rate of these devices.
RMAN settings – Several RMAN settings such as the degree of parallelism and multiplexing will have a performance impact. Of course, we will study them in this lesson.
Database settings – We will need to tune memory areas and allocate I/O slaves if we use synchronous devices such as tapes (to implement asynchronous operations to those devices).
Processor speed – How fast can your processor issue I/O requests and verify Oracle data? Though the I/O factors are usually the problem, CPU speed can be a factor.
Existing load on server – Of course, the existing load on your server will impact how long an RMAN job will take. Usually there’s not a lot we can do about that.