NDMP also has limitations, though. The main limitation being that it does not support cross-filer recovery. You cannot back up a NetApp and restore it to a BlueArc filer -- even though both support NDMP. This is because NDMP is a communication protocol only; it does not specify the backup format. Each filer vendor therefore creates their own format, making NDMP restores between filer vendors not possible.
opt_estimate 2 - This is a note that was supposed to be a follow-up to an initial example of using the opt_estimate() hint to manipulate the optimizer’s statistical underst...
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