A SEARCH on the SAS support website http://support.sas.com/ yielded several DOC and technical paper hits to consider. You may also find that the SAS 9.2 DOC has some applicability on this topic, even though you may be running an earlier SAS version (consider the link below).
Also, a Google advanced search using the argument below was quite fruitful with gems to review:
optimize oracle performance site:sas.com
Also, keep aware of SAS HOTFIX maintenance, given the SAS support problem note listed below.
Scott Barry
SBBWorks, Inc.
SAS/ACCESS for Oracle: Maximizing Oracle Performance
http://support.sas.com/documentation/cdl/en/acreldb/59618/HTML/default/a003113611.htm
Problem Note 20712: Decreased performance might occur when you use bulk loading in SAS/ACCESS® Interface to Oracle
http://support.sas.com/kb/20/712.html
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