Hi Bhagwati,
IRE can be calculated by
IRE = Rows read / Rows Selected (Fetched)

Thanks

Jagdish S. Rawat
IBM Certified Advance DB2DBA
NCS Pte. Ltd.
5 Ang Mo Kio St 62, NCS Hub
Singapore - 569141
Ph.# +65-65565870(Direct) +65-65568000 Ext. # 5870
HP.# +65-96425135
Fax# +65-64830495

-----Original Message-----
From: Bhagwati Goenka
[mailto:db2udbdba-ezmlmshield-x30655245.[Email address protected]
Sent: Saturday, October 20, 2007 11:08 PM
To: LazyDBA Discussion
Subject: "Index Read Efficiency"

Has anyone ever heard of "Index Read Efficiency"? Is this a standard,
accepted way of measuring database efficiency? I can't seem to find
anything about this except at some company's (DBI) website. I looked at
IBM literature, but couldn't find anything.


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