Re: Index Selection

[Charles Wilt <charles.wilt@xxxxxxxxx>]

Run Visual Explain from iNav's Run SQL scripts...

But I'd be willing to bet the answer is "the cost to use this index was to
high" or whatever the exact wording is.

Unless the systems are configured exactly the same, the query is running
over the exact same data _AND_ the systems are running the exact same
workload at the time the query is done, there's no reason to assume the SQE
would chose to use the exact same method.

Is the performance of system b significantly poorer?

Charles



On Fri, Aug 9, 2013 at 2:56 PM, Michael Ryan <michaelrtr@xxxxxxxxx> wrote:

> Ok...two systems, both on 7.1. Execute STRDBG UPDPROD(*YES). Run a program
> on system A. Job log shows an index was used for bit map processing. Run
> the same program on system B. Same index in place (though different
> libraries). System B job log says arrival sequence was used. How can I
> figure out why the index is used on one system and not the other? Thanks!
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