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  3. April 2003

RE: Access Path Maintenance Was RE: access path

The issue is not CPU and memory - the bottleneck is still physical I/O. Putting off maintenance of a seldom-used index will still have a tremendous impact, esp. over large files. And more so, the more of these logicals there are. Every addition/deletion of a record means every logical needs maintenance - the more there are, the worse. And this all involves I/O. Unless you delay this maintenance until needed. A long-running batch update can be helped immensely.

Regards

Vern

At 12:32 PM 4/24/2003 -0500, you wrote: 
With CPW to spare in the newest iSeries boxes, does access path maintenance
really cost so much to system performance?  I think most of what I once knew
about performance on the as400 has been made obsolete (or insignificant) by
fast CPU cycles and cheap memory.

Eric DeLong
Sally Beauty Company
MIS-Project Manager (BSG)
940-898-7863 or ext. 1863



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