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AssigneeOracle Corporation
InventorsNathaniel Keith Folkert, Abhinav Gupta, Andrew Witkowski
Estimating the term…
In an embodiment, estimated costs are used to pick the best refresh technique (e.g., method) for a given MV. In another embodiment, estimated costs are used to schedule the refresh of a set MVs in an order such that overall time to refresh is reduced, or in an order that uses the smallest overall time, for refreshing when compared to other alternative refresh schedules. In another embodiment, the estimated cost of refreshing each of a set of MVs is used to select the set of CPU resources to allocate to refreshing each MV. Based on the estimated costs, the allocation of CPU resources is chosen to be more optimal (e.g., use less CPU time) than other available sets of CPU resources. In an embodiment, when refreshing an MV, delayed index maintenance is chosen if a significant portion of the base table and/or the partitions of the table has changed.
A method for refreshing materialized views comprising:
A non-transitory machine-readable storage medium, storing one or more sequences of instructions, which when executed by one or more processors, causes the one or more processors to perform a method for refreshing materialized views, the method comprising;
Dependencies are inferred from the claim text.