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Jerry, EVIs are a different kind of index, as you know. They cannot be used for ordering records, only for record selection. This could be a reason to keep the non-EVIs, if they are used to support an ORDER BY. Also, I don't know whether and EVI index can be used in RPG, as a logical file can. Certainly it would have unpredictable order.

EVIs are cool and performance is supposed to be better in V5R2 - there were some problems earlier. No details, just scuttlebutt.

HTH

Vern

At 07:17 PM 10/23/2003 -0400, you wrote:
If I already have SQL indexes existing on my system, is there any notable
reason not to replace them with EVI's?

Since the system must already maintain the existing index, wouldn't the
overhead associated with maintaining the EVI be somewhat similar to
maintaining the existing index? The fields used to create the EVI would be
identical to the existing index. The only difference is that it would be
(re)created as an EVI. Wouldn't this be of benefit if it were only to reduce
the physical size of the index? (And I'd think the EVI would be faster too).
I'm running V5R2. Comments???

Regards, Jerry

Gerald Kern
IBM Certified AS/400 RPG IV Developer & RPG IV Programmer
MIS Project Leader, Lotus Notes/Domino Administrator
The Toledo Clinic, Inc.



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