Optimizing run time is decreasing the technical overhead. Read buffers is mostly sufficient There should be no logging and no locking when reading (writing is different). You local system could be a bottleneck (SSD?) as is the network transfer rate. Optimizing buffering bufsize aligniofiles could help. SAS/ACCESS(R) 9.2 for Relational Databases: Reference, Fourth Edition Xia give you that one already Mostly it is adiviced to work "federated" leave data as much as possible at his source, avoiding copies. With mining that is not really possible. As of Views and other technical stuff in Oracle it could be Oracle is not faster and being the limitation. Ask your oracle DBA for that area.
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